Clarification about quad core unitsl

I'm looking at various quad core units. Can anyone tell me the difference between a single quad core unit or two dual cores? Is one more powerful?

There won't be much difference usually... except for computations taking advantage of SSE4, present in latest generation cpus (penryn...), and for the performance/watt, for which the newer mac pros are really superior...
IMHO, if you have the opportunity to buy either one for about the same price, buy the new generation one (single quad core @ 2.8 ghz) but if can save a couple hundreds, or more, on the previous generation dual dual core @ 3.0 ghz, then maybe take the older one...
phjo

Similar Messages

Question about Quad Core 2.93 and Octo-Core 2.66

OK, so forgive me cause I am asking a question that has been asked a zillion times. I have read and searched and read and searched, however, I still don't quite understand a few things.
I am a huge Aperture user. I shoot the Canon 1Ds Mark III and use photoshop a lot as well.
I am still confused. What is the difference in performance between a
loaded 8 GIGs ram Quad Core 2.93 or
a middle 8-Core 2.66 12 gigs RAM
I read benchmarks after benchmarks, but most use games for their stats and that does not help me. I read the boards, but it is all so confusing what people think. I went to the Apple store, and of course, they immediately said 8-core! hahaha.
I hear an 8-core can be slower at single core apps than a quad core and so on and on.
please help me!

Hi-
this question si about what the ** is the difference between a Quad 2.93 and a Octo 2.66.
The question is pretty vague.
Maybe asking "What benefit do I get from an octo core as opposed to a quad core?" would be better.
To understand the main difference, and the main benefit of an octo core over a quad core, understanding the concept of multithreading is necessary.
Basically, Multithreading is the ability of a system to break tasks up into portions (threads), and assign these portions across multiple CPU cores, enabling the calculation, thus the process, to be be completed faster than if the entire process were to be done on a single core.
Because of this, more cores allows for faster completion of system functions. Yes, it's faster.
Currently, some software isn't quite up to snuff in supporting/utilizing multithreading abilities of multi core systems.
But, that is changing, and changing rapidly.
Soon, all software will be able to utilize the multithreading ability of a multi core system, and greater increases in system performance will be realized.
In the upcoming OS 10.6 release, further enhancement of multithreading operation will be seen.
What this all means to the end user, say in Photoshop, is, work will fly, complex enhancements will be almost instantaneous, and productivity can be increased.
Along with the multi core, multi channel memory will also allow for the use of larger amounts of RAM, with out the bottlenecking that occurs in singe channel systems.
Again, everything works faster.
The octo core allows for more physical RAM, which, even now, but more so in the near future, always helps with memory hungry applications like Photoshop.
Basically, the biggest difference between the two machines, is the octo core is more future proof- that is, it will support future software enhancements better than the quad core.
And, we are talking +near future+.
I believe the Quad is limited to 8 gigs RAM, not 16.
Both machines can use 4GB DIMMs, so the quad core can use 16GB and the octo core can use 32GB.
Buying RAM from a trusted third party vendor can reduce costs greatly, without affecting the Apple warranty.
Again, Apple employees are telling you what the book says, what they currently offer, not what can be done.
Apple store said SDD in a Mac Pro is not a good idea at all. Again, more conflicting suggestions.
The Apple store will not recommend anything that Apple is not officially selling.
SSDs work, and they work well.
Just ask Samsara, or some of the other hot rodders on these forums.
And because I don't understand scratch disk, SDD disks, raptor drives etc, this all is not getting me anywhere. thus, why i tried the Apple store.
Ask. Study. Use Wikipedia.
Educating oneself is paramount to improving decisions, questions, work and life........
SSD - The future, now. Fast, expensive (but coming down in price), no moving parts (reliable)Solid State Drive
*Raptor Drives* - A family of 10,000 RPM SATA drives from Western Digital. These drives are high performance. They make systems run faster.
*Scratch Disks* - These are additional hard drives (in addition to the system drive) that allow for greater utilization of virtual memory- the writing of files, temporarily, to hard drive, to free up physical memory and allow faster calculations of processes.
Anyone who does work with video or photography software, must have a working knowledge of the benefits of a scratch drive.
Photoshop runs +way faster+ with a fast scratch disk.
When seeking advice on any forum, the more specific the question, the easier it will be for contributors to provide advice that is pleasing to your senses.
I've given you my take on what I feel may be your questions intent.
Hopefully, it wasn't a waste of time.....

About Quad Core and Dual Core PowerMacG5

Hi everyone,
A guy is selling two Power Mac G5.
I'm not so familiar with these G5 line-up, and i'm asking for help.
He send me pictures, he took pictures of both Power Mac's from inside.
In one of them was written only G5 (like this:
Another one was written G5 two times(like this:
So can anyone help me which one is the Quad Core 2.5GHz? And is this Two Processor one from Late 2005 or older?
Respect, Leon.

Hi Leon, if he doesn't know...
Find the Serial# & use it on one of these sites, but don't post the Serial# here...
http://www.chipmunk.nl/klantenservice/applemodel.html
http://www.appleserialnumberinfo.com/Desktop/index.php
How to find the serial number of your Apple hardware product...
http://support.apple.com/kb/HT1349

My "About this mac" lists the processor as a 3.4GHz Intel Core i7. Is this a quad core i7 processor?

under "About this Mac" it says that the processor is a 3.4 GHz Intel Core i7. Is this a quad core processor? If so, why is it not stated as such?

Click "System Report"
Under "Hardware Overview" it will list "Total number of Cores". You can check that way. Cores are not listed in About this Mac on my machine either.

Why no Quad Core option on T510? How about USB 3?

I've been waiting for the T510 for some time now as my refresh cycle is up.
However, my hard requirements are:
- FHD 1080p display (check - but option cost is unreasonable)
- Quad Core (fail - at least a 7i 720QM)
- USB 3.0 (fail)
Lenovo - please get your act together and match at least mid class laptop specs of the competition such as the Dell Studio series. I must replace my ThinkPad in the next 3 months but you make it impossible to stick with your brand.

Yep you're lookign for a W510.
ThinkPad T510 : i5-540M : 8GB PC-10600 : 500GB 7200rpm : 15.6" HD+ : Intel 6300 : Win7 Pro 64 : 9Cell
Ordered 2/Feb/2010 : Shipped 22/Feb/2010 : Received 3/Mar/2010

Quad Core or Eight Core?

I have a G5 PowerPC Dual 2.0 and wanting to upgrade to a MacPro. My question is should I buy a Quad-Core or 8-Core? I could purchase a 2.66 Quad-Core "Nehalem" MacPro which is 800.00 less money than the 8-Core. Who benefits from 8 cores? I run Lightroom & Photoshop CS4 and primarily use the computer for photography, I occasionally render video but that is not very often. I also could look at the 2008 MacPro's but I have been told the "Nehalem" processors are a big improvement. My thought was this.....if the software does not take advantage of the extra "core" technology then going from 2.26 to 2.66 would be a good speed bump. Any advise is greatly appreciated........
Thanks in advance,
Kevin

Well I'd like to clarify a few things...
I remain very, very happy with my purchase. I have the latest version of Final Cut Studio on my Dual-Quad Mac. I am presently learning Motion, which ought to give Adobe's After Effects a good run for its money. I have been using After Effects extensively at work, where I work on a Pee Cee (A Dell XPS 600 that is about five years old and has 4GB of system RAM out of which the applications tend to see a maximum of 2GB).
I remain committed to the concept of buying as much processor as one can possibly afford, despite Joerollerblade's comments. He's correct in that spending the extra money for a slight processor increase is expensive. But he's not valuing his time as a professional. If he saves just one hour a day in processing time for his workflow, he's paying off the processor cost pretty quickly, assuming he is charging a professional rate.
As to Final Cut Pro, Apple's applications are written under the Cocoa framework and take advantage of Snow Leopard's Grand Central Dispatch for sending multiple threads to multiple processors. Thus, the more processors you have, the faster the application will work for processor-intensive tasks.
Now for some clarification.
Adobe's applications are all written under the Carbon API. Apple, when they released OS X in 2000 told developers that Cocoa was the way they ought to put together their applications and that Carbon was a transitional API to help them get from Apple's earlier System Software to the new Unix-based OS X. Apple has continued support for Carbon in order to support infrequently-updated legacy applications. We're talking applications like Leister Productions' Reunion (though I note they have recently updated their software to version 9, which supports Snow Leopard). Back in 2000, Adobe released Photoshop 6. There have been five releases of Photoshop since, which works out to a new release every two years. Surely, the folks at Adobe can develop for a new API in 9 years.
Carbon applications cannot take advantage of Apple's Grand Central Dispatch in Snow Leopard, so what Adobe has to do is detect and code for multiple processors and multiple cores in their application the hard way. And Adobe's programmers (as talented as they are) can hardly be expected to write code for eight processor cores when most computers out there have no more than four (and many have only two). Apple has just released its first all-in-one Mac with four cores at a very attractive price point. The way computers will get faster in the future is to add more cores.
But Adobe is sticking with Old Skool.They're essentially stuck in code that worked under System 8 and 9. Photoshop 11 (CS4) for Windows runs in 64-bit but, on the Mac, it's still a 32-bit application and that is probably because it's trapped in Carbon (kind of like how Jabba the Hut encased Han Solo). Frankly, it's time for Adobe to come out of the cold and have a nice, steaming hot cuppa Cocoa.
So, if we're assuming Adobe applications, does the Eight-Core Nehalem system give you advantages?
I read the review of Apple's new Quad and Eight-Core Nehalems in Macworld and they tested the two computers using their "Speedmark" test. The stock Eight-Core comes in with a Speedmark rating of 343 to the Quad-Core's rating of 348. Macworld explained that raw processor speed alone seems to place the Quad ahead of the Eight because:
"Many applications have a difficult time using even four processors efficiently, the advantage of having eight was not apparent in most of the application tests that make up our Speedmark benchmark test suite. In fact, the new eight-core system posted a lower Speedmark score than the quad-core system, and bested it in just one test—Cinema 4D, where it posted a 28 percent faster time."
I'm betting Adobe's Photoshop was one of those applications. Since the stock Eight-Core Mac Pro runs 15% slower than the stock Quad-Core, it's the raw processor speed that gave it the bump in performance over the Eight-Core. That is reason enough to upgrade the Eight-Core system's processor. The second reason why it's a good idea to get the more expensive computer is RAM.
The Quad-Core Mac Pro has slots for a maximum of 8GB of 1,066MHz DDR3 SDRAM modules. The Eight-Core can fit 32GB. That's eight times as much RAM in the more expensive computer, which will lend itself to a longer life. If you are using Photoshop to make really large images or you are using Photoshop with Adobe's suite of applications that include Illustrator and InDesign and you need to keep all of these applications open so that you can quickly modify images to suit your publication, 32GB of system RAM will come in handy as time goes on.
My current system has 8 GB installed in it by Apple. That's as much as you can fit into the Quad-Core and I'm all set for another 8GB as the demands of my software increase (which they will).
To jthunders particular question, I have Final Cut Studio on my system. I am running Leopard and not Snow Leopard and this is because Intuit's Quicken 2007 will not run on Snow Leopard. When Intuit finally updates their software, I shall upgrade my OS (assuming I do not have any current projects running and assuming I have a complete clone of my boot drive with a good installation). I routinely have both Motion and Final Cut Pro open at the same time and have had Motion, Final Cut Pro and Color open at the same time for a stretch. I was hitting my hard drive for extra RAM, but the applications handled what was needed with no problems. I contrast that to being at work on the Pee Cee running Windows XP Pro, Adobe's Premiere Pro 1.5 and After Effects 6.5. If I open up Premiere Pro and then open up AE to do something quick, Premiere slows to a crawl until it collects enough memory to get done. Typically, I need to exit Premiere Pro in order to free up enough RAM for the system to get out of its own way when I'm working on anything complex. I'm editing in NTSC (Standard Definition) in Premiere Pro and AE. I can easily work on HD video in Motion and Final Cut Pro.
Back at the beginning of March, Macworld quoted Envisioneering Group's Richard Doherty:
"Apple’s decision to upgrade the Mac Pro falls in line with the growing adoption of high-definition video. Apple is delivering all the processing power it can get for users to edit real-time HD video through the upgraded Mac Pro workstations."
So if all jthunders intends on doing is SD video, he's probably fine with what he has. But if he intends to move forward with HD video on his system, the Mac Pro line (and arguably the new Quad-core iMac) will handle the processing requirements of HD projects.
I would mention one caveat here. Mac Pros can take expansion cards and, if you want to edit HD video, you're going to need a RAID array to play back HD. The only way you can play back uncompressed HD on an iMac is by connecting a RAID array to the built-in Firewire 800 port on the iMac. You cannot choose SAS or SCSI or a Fibre Channel solution on an iMac for video.

Please to help rookie with quad core on P35 Neo 2 (MS-7345)

I bought a home built computer (specs below) for my sons almost a year ago and have had nothing but trouble with it. After I finally realized that the graphics card was over-heating it worked better for a bit after replacing Radeon 9600 with some crappy one. Then I reinstalled XP and seem to have lost drivers for some of the functions of the MB like sound and networking. Presently it is an impressive looking paperweight with fantastic specs.
It does boot to XP and has internet connection now that I stuck in a NIC card.
I was foolish enough to install and run microsoft genuine advantage and, because it didn't pass, have to read about it every boot and login. So I'd like to reinstall XP again.
I do have System info for Windows (SIW) installed.
I bought system so sons could play Call of Duty 4. When I try to launch COD it gives message:
"Error during initialization:
Miles sound system initialization failed.
Make sure you have your sound card's latest drivers and DirectX installed."
I have installed latest DirectX but do not know what to do about sound card as it is function of MB, I think.
Any help would be greatly appreciated as to next steps or what further info I would need to gather to solve.
Thank you!
Chip
Specs:
-Intel Quad Core CPU Q6600 clocked @ 3.0 GHz x 4, passed 24 hrs Prime95, 100% stable
-Copper Heatpipe CPU Cooler for better cooling than stock heatsink
-MSI P35 Neo 2 motherboard with Intel P35 Chipset w/ Intel ICH9R Chip, Copper Heat-pipes to keep both the chipset and power converter cool, Socket 775, FSB 1600/1333/1066/800-MHz, and,
-Dual 16x PCI-Express video, (4) memory slots for up to 8 Gigs of Dual Channel DDR2-1066 memory, (5) SATA connectors, (2) external e'Sata ports, up to (12) USB ports, CrossFire Support
-2-Gigs of CORSAIR XMS2 memory with with DHX Technology DDR2-6400 (800-MHz) for best Vista performance.
-Seagate 1TB, 32-Meg Cache, 7200 RPM hard drive with perpendicular recording technology for great performance
-HP 20x Dual Layer DVD / CD-RW Burner to handle all your burning needs
-Gigabyte 10/100/1000 Fast Ethernet Port to connect to your High-Speed Internet
-(8) 2.0-USB ports to connect digital cameras, printers, MP3 players, etc… (6) in the rear and two on the front
-7.1 HD Surround Sound Audio
-Dual boot of XP and Vista, along with Photoshop and Office included .
-Sigma "La Vie", black gaming case that has a side window and Blue LED fans to show off the parts. Along with a 680W power supply 30-Amp 12V rails, 6-pin PCI-E power connector give this plenty of juice for any video card.

Thank you again for that page. I had looked (in vain) for this because I did not receive the MSI cd with this computer.
http://www.msi.com/index.php?func=downloaddetail&type=driver&maincat_no=1&prod_no=1213
I dl'd all of the files and began to install from the bottom up. The "Intel INF Drivers for 3/4/5 Chipsets" went fine but in the 'read me' for "Intel Matrix Storage Manager Driver" it says that if none of the supported RAID or SCSI controllers are present in the Device Manager/IDE ATA/ATAPI controllers then your computer is not in RAID, SCSI or AHCI modes and these drivers are not applicable. Does that makes sense considering the type of hard drive? Do hard drives have drivers? (apologies if this does not make sense)
Also, the "Realtek PCI-E Ethernet Drivers" only contains dll, system and a security catalog file. I do not know what to do with these to install.

Crazy to install CS2 on Quad Core 64 bit Windows 7 notebook?

I've been a video producer/director/editor since 1970 and have witnessed most all the progress and insanity of the "corporate wars" to dominate video production and later, video editing. I no longer see any reason to differentiate between still photography, video production, editing, web authoring, print production, graphics, CGI, CAD etc...ad nauseum. My dream has long been to have one very powerful laptop that could do most everything that a creative person desired on location anywhere in the world.
My new notebook is an ASUS Quad Core G71GX with 6 GB RAM - an Nvidia Geoforce GTX 260M - and 2 - 500 GB, 7200 rpm hard drives - Windows 7 Home Premium 64 bit OS. These days I shoot most video using a Canon SX1 IS at 1080 30p and the files are playing back beautifully on the 1920x1400 display at full frame rate. So for me that covers the basics. I will be upgrading from Windows 7 Home Premium to Ultimate shortly. Does anyone have issues/questions about the platform?
As to the software . . . I have been using Adobe stuff for 20 years or so.but did not get into their video editing products until Premiere 6.5. Than I jumped in with both feet and became a beta tester for the CS2 video collection. I still have my complimentary Premiere Pro 2.0 and it still works on my older XP Pro notebooks.
But now we are here in 2010 and all the major PC platforms are running 64 bit Operating Systems and I just figure that I should hold out for a true 64 bit Master Collection [which many people call CS5]. In the meantime I decided to install my CS2 Creative Suite and Premiere Pro 2.0 just so I could have the benefit of these programs while I am waiting for the 64 bit to release.
I purchased my CS2 back in 2005 as a download and last night made the attempt to install it onto the ASUS. As expected the serial number did not work so I called Adobe Installation support and got started after they prompted me for the "challenge" code. When I entered it the installation began nicely UNTIL the first folder [CS_2.0_UE_Ret_D1] finished loading and UP POPPED a window saying "Please insert CD #2" with only an OK button. Well, I didn't have any CDs because the suite was delivered as a download way back when and there seems to be no way to get to Disk 2 folder.
I finally decided to Quit the install when up pops a window that says [paraphrasing]. Your Photoshop program on Disc 1 has been verified and so try again to install. I said OK and up pops a window with all the various programs and the option to select Install. I selected each one [except GoLive because I now have Dreamweaver CS4] and proceeded. I sort of kluged my way through the transition from D1 to D2 to D3 to D4 folders and by all indications had a successfully installed, registered and activated CS2 suite on the ASUS notebook. Restarted the machine.
Opened Photoshop and up comes an error message "Your Adobe Photoshop user name, organization or serial number is missing or invalid. The application cannot continue and must now exit" "OK", which I pressed and Photoshop closed. Checked the other CS2 programs and none of them would open.
I would appreciate any pointers on how to get CS2 Creative Suite to install properly since Adobe Tech Support says such installation help is out of date and recommended this forum.
BTW: I run Videography Lab and am the "seminal author of videography". OCT 1972 American Cinematographer. I have a different take on the meaning of videography than most folks. After 38 years of research and contemplation I believe "Videography means 'I know to write' or conversely 'writing my knowing'" The platform that I've been talking about is the technology tool that enables such communication in "the Age of Videography" [Miller Freeman Publishing - 1996].
Call me crazy and than help me get this sorted out
Bob Kiger - [url removed by host]
PS: Does anyone beside me expect a sudden and dramatic shootout between Final Cut Studio & Adobe Creative Suite soon?

Hi Michael--
Upon continued research we found your statement "CS 2 isn't compatible with Windows 7 32-bit no less 64-bit." not quite true. We grant you that, in it's raw state, Windows 7 will not install, activate, register etc. CS2 programs. That's been the Adobe position for quite a while.
Now that we have Windows 7 in hand and can play we found that if you have Windows 7 Professional or Ultimate edition you can acquire for $89.95 and download/install in an hour or so "Windows Virtual PC" and "Windows XP Mode".[Note: This feature is not available on Home editions].
We purchased the platform and once it is installed we had a "Windows XP platform" on our Windows 7 machine. From that point forward the installation of CS2 and many other of our old favorite programs was a snap. We've opened and worked with Photoshop, Illustrator and InDesign etc. with no problems.
And, by the way, Premiere Pro 2.0 intalled easily on Windows 7. We're testing it now with some sub-1080p projects.
As to the long nagging problem of Adobe Installer not recognizing the downloaded CS2 CAB files during installation, we worked around by just saying OK when the installer asked for the next disc and immediately clicked on the desired disc in a seperate exlorer window which contained all the download files.
So that's the workaround for us. Now we wait to see who wins the race to enchant users with 64 bit editing and imaging suites.
Thanks for all your help.
Bob Kiger - Videography Lab

I am running Photoshop CC 2014 on Windows 8.1 with an AMD quad core processor and AMD E1-2100 APU with AMD Radeon HD 8210 Graphics Card. I have installed the latest driver version 13.152.0.0. When I activate puppet warp, the mesh appears over the image an

I am running Photoshop CC 2014 on Windows 8.1 with an AMD quad core processor and AMD E1-2100 APU with AMD Radeon HD 8210 Graphics Card. I have installed the latest driver version 13.152.0.0. When I activate puppet warp, the mesh appears over the image and I can place the first pin. However, when I go to add the second pin, Photoshop crashes. I have tried with on a new, blank file, with just a few lines on it, but, as soon as I place the first pin, the image disappears, and then, as soon as I click anywhere else in the image, Photoshop crashes. I have followed all the online advice about settings under the Preferences/Performance interface, but nothing fixes the problem. Can anyone please help?

BOILERPLATE TEXT:
If you give complete and detailed information about your setup and the issue at hand, such as your platform (Mac or Win), exact versions of your OS, of Photoshop and of Bridge, machine specs, such as total installed RAM, scratch file HDs, video card specs, what troubleshooting steps you have taken so far, what error message(s) you receive, if having issues opening raw files also the exact camera make and model that generated them, etc., someone may be able to help you.
A screen shot could be very helpful too.
Please read this FAQ for advice on how to ask your questions correctly for quicker and better answers:
http://forums.adobe.com/thread/419981?tstart=0
Thanks!

Using a Mac Mini Server quad Core i7 for FCPX ?

I am a student trying to
configure a final cut pro X edit system with a budget of around $4K.
I have over 400 hours of video (some Hi-8 but mostly mini-DV tapes).
For the Mini-DV tapes I plan on ingesting video into FCPX
directly from the camera via firewire DV. I will be using a Sony GV D800 to ingest
the Hi-8 tapes via firewire DV as well. I already have a 30" Apple Cinema Display.
H.264 will be used to deliver finished content to the web and/or Blu-ray.
I was leaning toward the macbook pro 17" but then I realised that a Mac Mini Server
could be configured with the same number of cores and RAM for less money.
Mac mini Server
2.0 GHz Quad Core Intel i7 -- same number of cores as macbook pro 17"
8 GB RAM
750 GB Serial ATA Drive 7200rpm + 256 GB Solid State Drive
Mini DisplayPort to Dual-Link DVI Adapter
Apple Magic Mouse + Magic Trackpad
Other Peripherals:
Promise Pegasus 8TB R4 Raid System in RAID 5 configuration or equivalent
Sonnet Echo Express PCIe 2.0 Thunderbolt Expansion Chassis with
Matrox Compress HD MAX encoding card
LaCie d2 Blu-ray 12x
Do the extra cores in the server make up for the difference in GPU?
(2.7 GHz Mini dual-core i7 with AMD Radeon HD 6630M graphics processor with 256MB of GDDR5 memory) VS (2.0 GHz Mini Server quad - core i7 with Intel HD Graphics 3000 processor and 384MB of DDR3 SDRAM shared with main memory)
Am I thinking about this configuration the right way? Is there
any overhead given that the mini will be a server? Anything missing?
thanks for your help,
Tom

Take it back for a replacement while you are within 14 days from purchase.

UPGRADING AND MIXING MEMORY ON MY MAC PRO QUAD CORE DUAL 2.8 (Xeon)?

Hello,
I have a Mac Pro Quad Core Dual 2.8GHz (Xeons) with 4GB of memory (2 x 1GB Apple modules + 2 x 1GB other brand - Shown as "Manufacturer 0x855D") and now I want to fill the other 4 memory slots by adding an additional 16GB (4 x 4GB modules) for a total of 20GB of RAM.
My 2 questions are:
1.- In which order/pattern should I install these new 4 X 4GB modules along with my original Apple 2 x 1GB modules and the "Manufacturer 0x855D" 2 x 1GB modules the best way (for better performance)? - I have heard stories that if I do it improperly, I could slow down my Mac Pro...
This is how I have them configured right now:
Raiser A / DIMM 1 = 1GB (Manufaturer "0x830B") - I assume this is the Apple memory, right?
Raiser A / DIMM 2 = 1GB (Manufaturer "0x830B")
Raiser A / DIMM 3 = Empty
Raiser A / DIMM 4 = Empty
Raiser B / DIMM 1 = 1GB (Manufacturer "0x855D") - How can I find which manufacturer is this?
Raiser B / DIMM 2 = 1GB (Manufacturer "0x855D")
Raiser B / DIMM 3 = Empty
Raiser B / DIMM 4 = Empty
2.- What brand would be most compatible to work with my Apple 2GB (2 x 1GB) factory memory? Kingston? Crucial? Mushkin? iRam? Corsair? OWC? (Does OWC sell their own brand? or which one do they carry?-its not specified on their web)
Thank you so much in advance for all your help!

About RAM installation in the Mac Pro
Mac Pro memory arrangement photos
Mac Pro Memory Configuration
Memory Tests- "2008" Mac Pro
Ram should be installed minimally in matched pairs and optimally in matched quads. This means the memory modules are the same size and specifications. They should also be equipped with the Apple-certified style of heat sink.
Brand really doesn't mean much as long as they work.

Mac pro 2.66 Quad Core - boot drive mirrored, replace?

All,
I have a Mac Pro 2.66 Quad Core system.
I got all 'sexy' when I set it up - loaded four 1-TB drives in the 4 bays, Mirrored the boot set, also mirrored the secondary set for data.
I am getting ready to have these guys filled up (I do lots of video, pics, etc), and am thinking about 'growing' the drives to 2TB or even 3TB disks (mirrored of course, I'm paranoid).
So I am thinking about the 'how' of moving my data to the larger drive, getting things set up. I have not had any of the drives fail, so I haven't needed to do a swap out yet.
Can I simply take out one of the mirrored boot drives, put in a larger drive, and it will then rebuild the mirror?
or if anyone has some info they can point me to, I'd appreciate it.
thx

You cannot just add a larger drive and grow your RAID Volume size. You need to create an empty larger RAID Volume and COPY the data to the larger Volume, e.g., from your Backups.
Mirrored RAID is NOT Backup. It merely extends the time to repair to keep a drive failure from becoming a data disaster. RAID gives you no protection from human error, crazy software or file problems that happen "just because". You still need backup.
One of the best ways to get increased performance from a computer with the ability to support multiple Internal drives is to keep only System, Library, Applications, and the hidden unix files including paging/swap on the Boot Drive, and move everything else off. This dramatically reduces competition for the Boot Drive and everything speeds up. A Velociraptor is a little faster, and an SSD is incrementally faster still.
If that is all that is on the Boot Drive, you do not need to RAID it, since it can be reproduced from DVDs or downloads in short order. All your User files and Preferences are on other drives..
Implementing this would suggest a single small fast Boot Drive, typically with an offline clone as Backup for emergencies, and forget about RAID-ing the Boot Drive.

Can someone tell me how to fix this error in 10.4.11 on a G5 Quad Core 2.5GHz Tower...A valid video device could not be found for playback. [-70017]

Can someone tell me how to fix this error in 10.4.11 on a G5 Quad Core 2.5GHz Tower...A valid video device could not be found for playback. [-70017]

That's an error reported from DVD Player I believe...
kDVDErrorMissingGraphicsDevice = -70017, // A valid graphics device is not available.
There's some conjecture it has to do with HDCP, or Video Card problems, but the only 2 cures/fixes I found were Software related, one was cured by updating the OS, another by replacing the Video kexts.
I think this error also shows up if trying to use DVD player in Safe Mode, (too much research isn't good! ).
At the Apple Icon at top left>About this Mac.
Then click on More Info>Hardware>Graphics/Displays and report like this...
NVIDIA GeForce 7800GT:
Chipset Model:          GeForce 7800GT
Type:          Display
Bus:          PCI
Slot:          SLOT-1
VRAM (Total):          256 MB
Vendor:          nVIDIA (0x10de)
Device ID:          0x0092
Revision ID:          0x00a1
ROM Revision:          2152.2
Displays:
VGA Display:
Resolution:          1920 x 1080 @ 60 Hz
Depth:          32-bit Color
Core Image:          Supported
Main Display:          Yes
Mirror:          Off
Online:          Yes
Quartz Extreme:          Supported
Display:
Status:          No display connected
Can't think of much to try at the moment, but perhaps reapplying the big 10.4.11 combo, Repair Permissions, & reboot would help, not sure.
The combo update for PowerPC-based Macs...
http://www.apple.com/support/downloads/macosx10411comboupdateppc.html

2012 Macbook Pro 13in 2.9GHz vs 2011 October 15in quad core refurb

This fall I will be a freshman at my college and I have decided that I am going to invest in a macbook pro. Right now I could buy 2012 13in with 8gb of ram for $1399 or I could purchase the refurb for $1359. My question is which one will benefit me more in the long run? Is 15in to bulky and heavy to take to college? If i chose the refurb would I be able to count on it for years to come? Will it last longer than the 2012 13in. If I got the 15in I would probably upgrade to 8gb of ram. I would be missing out on USB 3.0 if I chose the refurb though. Is this a deal breaker? I'm planning on getting into Economics and my college pretty much endorses Macs so that won't be a problem. Otherwise, I will probably just be doing normal things on my computer like watching videos, surfing the web, typing papers, downloading music and the occasional playing of flash games on the internet. I just want to make sure that I can get a computer that will last me at least 4 years and hopefully more. Any suggestions and thoughts would be very helpful!

I would go a different route.....
I would buy the the 15' Quad Core.
Regardless of which one you decide to purchase, they would last for years if proper care is used.
The 2.9GHz is a fast machine. No doubt about that one. It is however, in the end, only a dual core.
Let say you decide to do some number crunching, the dual core will run out of steam before the quad core does.
Or you decide to use photoshop, the dual core will do the job but the quad will do it efficiently because of it's quad core design, the processing is done by all four cores thus finishing faster.
And when it comes with your occasional games, the 15' has it's own discreet graphics to process the videos while the 13' has to rely on the processor to drive the built in intel video. So the processor will be working harder on the 13' which will make your MB run a little on the hot side.

Hi, I bought an imac 27" quad-core i5 with 1067Mhz DDR3 RAM in it. I would like to know if this is the right type of speed for my imac as I found out that these imacs come standard with 1333Mhz DDR3's? It is crashing a lot!

Hi all. I bought an imac 27", 3.1Ghz quad-core i5 Mid 2011 last year in 2012. The machine has been crashing ever so frequently. I upgraded the RAM from the 4Gb it came with to 12Gb. It still crashes! I recently noticed that my imac came with 1067Mhz DDR3 memory chips ( slower speed) than the Apple mac recommended 1333Mhz DDR3 memory chips.
The shop I bought it from ( Incredible Connection, Woodmead, South Africa) are refusing to own up as they are saying the 1333Mhz chips have to be ordered in advance. Surely they are supposed to sell the product with the right kind of Ram in it? Not for me to find out? Now I have to fork out more money to make my imac factory standard? Maybe I am wrong, But do these Mid 2011's run well on 1067Mhz memory chips if I upgrade to 32Gb? Is it possible people are swapping 1333Mhz chips from new machines with 1067Mhz chips which are way too cheaper? My system version( SMC Number) is 1.72f5
Baffled!

Mac and Mac models are picky about the RAM the Mac needs to see and use.
As you have found out, the 1067 speed RAM will not work in your year and model iMac.
You need the 1333 speed RAM.
If, you can return the RAM for a refund, do it!
If not, try online Mac RAM source and seller Crucial memory. They have a table that matches your Mac to the correct and reliable RAM. You may need to contact them to see whether or not they ship to South Africa, though.
If Crucial dpesn't work out, here's the specs for your year and model iMac that you need to seek out and purchase.
Maximum Memory
32 GB (Actual) 16 GB (Apple)
Memory Slots
4 - 204-pin PC3-10600 (1333 MHz) DDR3 SO-DIMM
Good Luck!

Clarification about quad core unitsl

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