Intel Duo Core vs. Quad Core performance issues

I'm comparing performance of my multi-threaded server software on two machines and three OSes and finding some puzzling results.
Computer #1
Intel® Core 2 Duo (T7500)
2GB RAM
4M Cache, 2.20 GHz, 800 MHz FSB
Mac OS X 10.6
Java 1.6u17 (Java HotSpot 64-Bit Server VM)
Computer #2
Intel® Core 2 Quad (Q8300)
8GB RAM
4M Cache, 2.50 GHz, 1333 MHz FSB
Ubuntu 9.10 or Windows 7
Java 1.6u17 (Java HotSpot 64-Bit Server VM)
Results:
Surprisingly, my Java program runs significantly faster on the Mac (Computer #1) than on the PC (Computer #2) running either Linux or Windows. The latter runs at 60%-75% of the speed as the Mac.
I'm not understanding this as the Mac is 3 years old and has a slower clock speed than the PC which I literally just purchased.
Experiments:
-tried testing with both Java 1.6u19 and a 1.7 beta on Ubuntu, saw improvements of up to ~10% on the PC
-disabled 2 cores in Windows 7 so that's it's duo vs. duo instead of duo vs. quad; no difference
-changed the Ubuntu processor setting to "Performance" instead of a power saving/efficiency mode, no difference
-tried -Xconcurrentio on the PC, no difference
I reckon I'll have to go into profiling the code to shed some more light on this, but thought I'd ask if anyone has seen this sort of thing. I'm not comparing apples and oranges, am I?
(Here's a screenshot of the Intel website comparison on the processors: [Compare Intel Products|http://i.imgur.com/FEuGu.png] )
I notice the Mac processor has a bus/core ratio of 11 while the PC has 7.5.
7.5/11 = 68%, coincidence?!

Harm is correct, look at the Premiere Pro CS4 Benchmark (PPBM4) results and see the result for those two processors. While you do get a small incremental inprovement it probably is not with the cost.

Similar Messages

Using Adobe CS2 with mc book pro intel duo core 2,16 .17"

As a designer working on high definition heavy graphic files intended for digital printing, i am about to go for mc book pro 2,16 duo core and 2gb ram.
I need to use CS2 (photoshop, illustrator) and know that it is not a native soft version, so not otimized for this processor. Any how, I just cannot wait CS3 (Adobe says 2007 whenever they are ready !), so I need advise of professional users of such applications on this mc book pro intel duo core 2,16 17".
I heard pretty scary rumours about such a professional use.
PLEASE HELP BEFORE I GO FOR PC/WIN !!!

CS runs beautifully, with really no lag at all. Keep in mind that I haven't gotten to upgrading from 1 GB RAM to 2 yet, since my tablet died and I needed to replace that. I just installed CS2 last week, and there is a lag, and we'll soon see if more memory helps. Everything works fine, no crashes, etc., but there is in my opinion a noticeable difference in loading time, and various other tasks within the apps take longer. Again, CS2 works just fine, but the performance of CS is much better.

My Apple desktop computer, 2.4 GHz Intel duo core, OS 10.6.8, stopped recognizing the WD My Book connected via firewire. It works fine with the USB port so it's not the drive. Help please.

My Apple desktop computer, 2.4 GHz Intel duo core, OS 10.6.8, stopped recognizing the WD My Book connected via firewire. It works fine with the USB port so it's not the drive. Help please?

It can be the bridge. It could need firmware update. or the FW ports may be an issue. LaCie seemed to invent the phrase/tip 'resetting firewire ports' due to the issues with their drive cases.
You can try an SMC Reset.
So far I have avoided name-brand and tend to see them mentioned. Often with a new OS (though you are on 10.6.8, but when 10.6 came out there was a common complaint and thread of users: FW or USB worked but not the other interface).

Intel duo Core and CS2 - does it work?

Hi guys,
I'm doing really well. I ordered a 17" imac 1.82Ghz Intel Duo Core and I have not as yet received it.
I have alos ordered Aperture (which will work but possibly quite slow) although I have upgraded to 2Gb Ram.
I have also ordered Photoshop CS2 (full version) and I'm confused. Can I install it? Will it work?
If Aperture is slow and Photoshop CS2 doesn't work what can a amateur photographer use. I'm cheesed off because I ordered an expensive machine and software and before I have even received it I'm seeing that it might not be suitable at all.
Can someone give me some "peace of mind" please.
17" IMAC (1.83Ghz) Intel duo Core / 2GB Ram Mac OS X (10.4.6)

Although you can use CS2 with an Intel Mac you should be aware of a significant problem which relates to its installation on them since the last Security update. According to Frank, one of the more senior members of the boards , with a good knowledge of this area:
The CS2 installer will fail if you have applied SU 2006-003 prior to the installation of CS2 on an Intel-based Mac. You will be required to reinstall Tiger, otherwise you will be only able to reboot the machine via a Netboot, CD boot or Safeboot. The Finder is completely locked. It is unknown at this time which extension is causing the issue. Adobe has acknowledged the problem.
One workaround that I am aware of has been suggested on MacFixit:
MacFixIt reader David Warren writes:
"I had the startup freeze like others. For my MacBook Pro the answer was removing the Adobe VersionCueCS2 from /Library/StartupItems.""(from MacFixit - http://www.macfixit.com/article.php?story=2006051507495116 )
To do this, though, you would need to be happy starting up in the non-standard ways suggested by Frank. I wouldn't normally suggest this for a new Mac user. If you plan on going down this path post back and we can tell you how to.
I guess the real answer is that you will need to know whether the security update has already been installed on your new computer. If it has, then you should wait until Adobe have a fix for the problem before you install Photoshop.
If it hasn't, install Photoshop BEFORE you upgrade with the Security Update, and don't re-install it thereafter until the Adobe fix arrives. You should also remove the relevant startup file, just to be on the safe side.
So whoever warned you about installing it was doing you a favour, and a "simple google search", might have got you into quite a lot of strife!
Cheers
Rod

Final Cut Studio 2 on an Intel Duo Core 2 iMac?

Can FCS 2 efficiently run on an Intel Duo Core 2 iMac? Should I invest in a Mac Pro? Thanks for any advice.

On the contrary. I've been using a 20" iMac since June of 2007 and it has performed very well on a number of projects, including an hour-long documentary, a 1 1/2 hour concert, and multiple smaller projects.
That isn't to say that a Mac Pro isn't better. Often times it's the budget that makes people lean towards an iMac. Keep in mind, 540, that an iMac isn't expandable, and that's the thing to consider. You can't add more ram and you can't install a capture card for working with HD footage.
If none of that matters to you, then the iMac will do just fine.
jesse.

Hotmail/intel duo core

Has anyone successfully downloaded the plugin for hotmail in mail on the new intel duo core and managed to get it to work?
v grateful for any advice on how to do this. i have installed the plugin but it doesn't seem to be recognised in the options for account set up.
thanks
iMAC intel duo core 17" Mac OS X (10.4.4)

I don't believe the httpmail plugin is Universal yet which means it runs/works for the Mail.app on a PowerPC Mac at the present time only.
An Intel Mac includes Rosetta which is a translation process that runs a PowerPC binary on an Intel-based Macintosh computer—it allows applications to run as nonnative binaries.
For the Intel based Mail.app (which should be Universal), try selecting run as a PowerPC binary (which requires Rosetta) using Get Info for the Mail.app application via the Finder.
This should allow the httpmail plugin to work.

Upgrade to OS 10.4 with SW coming from new Mac Mini (Intel duo core)

Is it possible to upgrade my G4 PowerBook to the latest OS 10.4 and iLife06 with the SW provided and installed on new Mac Mini's with the Intel duo core? That would make purchasing a new Mac Mini a sweeter deal.

No.
The disks that come with new machines are specific to that machine.
You will need Tiger and iLife '06 if you want to upgrade your PowerBook.
Regards,
Colin R.

My MacBook Pro, 1.83 GHz Intel Core Duo gives me an error message during Lion install. My Intel Duo Core is not an Intel Duo Core and cannot install Lion. I already have Snow Leopard what is the problem with Lion?

My MacBook Pro, 1.83 GHz Intel Core Duo gives me an error message during Lion install. My Intel Duo Core is not an Intel Duo Core and cannot install Lion. I already have Snow Leopard what is the problem with Lion?

You need a "Core 2 Duo" for lion, and I'm guessing you only have a "Core Duo" My wife's macbook is also a "Core Duo" and has Snow Leapord, but cannot install Lion.....

Sharing hard drive with windows xp on imac intel duo core

Hi,
I was wondering whether I could give over anymore of the hard disk on my imac intel duo core to Windows xp? If so, how would I go about doing that?
Thanks in advance

At this point I think that you would need to use Boot Camp to remove the current partition and then make a bigger one and reinstall Windows.
Just an idea for you. There is an entire Apple Discussion forum dedicated to Boot Camp and Windows.
The Forum is at the bottom of the main Apple Discussions page under Windows Compatible Technology.
Here is a link;
Forum: Boot Camp Public Beta

Imac intel duo core

i have an iMac intel duo core first generation 2ghz, i wanna know if it's 32 bit or 64 bit
thanks
Alberto

did you read this ?
http://gizmodo.com/gadgets/intel/intel-hiding-features-from-users-153822.php

Need RAM Installation Instructions for mac mini intel duo core

I just purchased two gig of ram for my intel duo core mac mini and cannot figure out how to install. I was able to get the cover off - but where does the RAM go?
I can't find any instructions on the apple support page for the mac mini.
All of the links in discussion board that I found are for instructions on installing ram on single processor mac mini which uses different type of ram and is installed in diff location.
Any help greatly appreciated.

I found a video here at owc: http://eshop.macsales.com/tech_center/index.cfm?page=Video/mini/intel/high.html

HT1544 can I install Leopard 10.5 on my mini-mac 1.66Gz, intel Duo Core, 512 MB, 667 Hz

My 1st post. Can I install Leopard 10.5 on my old Mini-Mac 1.66GHz, intel Duo Core 512 MB, 667 Hz.
Thank you very much

Hello & a warm welcome!
Yes you can, but 10.6 would be cheaper...
Leopard requirements/10.5.x...
    * Mac computer with an Intel, PowerPC G5, or PowerPC G4 (867MHz or faster) processor
minimum system requirements
    * 512MB of memory (I say 1.5GB for PPC at least, 2-3GB minimum for IntelMacs)
    * DVD drive for installation
    * 9GB of available disk space (I say 30GB at least)
Classic/OS9 Apps no longer supported.
May be available from Apple again, or not...
https://discussions.apple.com/thread/4720126?tstart=0
Trouble is Apple no longer sells it, check eBay & such for the Retail version, not the Gray Discs...
http://www.ebay.com/sch/i.html?_nkw=mac+os+x+leopard+retail+10.5
Snow Leopard/10.6.x Requirements...
General requirements
   * Mac computer with an Intel processor
    * 1GB of memory (I say 4GB at least, more if you can afford it)
    * 5GB of available disk space (I say 30GB at least)
    * DVD drive for installation
    * Some features require a compatible Internet service provider; fees may apply.
    * Some features require Apple’s MobileMe service; fees and terms apply.
Buy Snow Leopard > http://store.apple.com/us/product/MC573/mac-os-x-106-snow-leopard
Call Apple Sales...in the US: 1-800-MY-APPLE. Or Support... 1-800-275-2273
Other countries...
http://support.apple.com/kb/HE57
It looks like they might still have it...
http://store.apple.com/us/product/MC573Z/A?fnode=MTY1NDAzOA

2.0 GHz Intel Quad core i7 vs. 3.7 GHz Intel Duo Core i7 Processor: Why not make the Quad Core 3.7GHz?

I don't really understand processors, but is the 2.0GHz Quad Core i7 really a better processor in terms of performance? If it has 4 cores why not give it greater processing speed like 2.7 or 3.0 GHz?
I am asking because I am thinking about getting the high end Mac Mini, but I see that it's processor runs at 2.0GHz and the others in the line run at 2.5 and 2.7 respectively. Why is this?

I'm really oversimplifying here, but...
Let's just assume that each core runs at full speed all the time, the total performance of that processor would be the sum of the running totals of each core:
Duo Core i7 = 2 (cores) * 2.7 GHZ = 5.4 Ghz total processor power
Quad Core i5 = 4 (cores) * 2.0 GHZ = 8.0 Ghz
Like I said, oversimplified. But, you get the point. Not to mention, most apps still aren't optimized, so at a given time they only use a single core anyway. In this case, it'd be more beneficial to have more cores, since they would (hypothetically) be able to run more simultaneous processes (four vs. two in your case).
I gues the greater question is: what were you planning on using the mini for? Most CPUs go underutilized anyway, so you may be better off getting a 2.0, and maxing out your RAM and maybe adding a SSD. Those upgrades (the SSD especially) will result in a very noticeable increase in performance.

How do I upgrade OS X 10.5.8 on my iMac with Intel duo core processor

I have an iMac 24" with 2,16 Ghz Intel Core Duo processor and 2Gb 667 Mhz DDR2 SDRAM running on OS X 10.5.8 to Lion?
I know I have to upgrade first to snowleopard???
If so SnowLeopard is not available in the iCentres etc.
What to do??
Brgds,
Nils

Your iMac is a Core 2 Duo not a Core Duo according to this http://www.everymac.com/systems/apple/imac/stats/imac-core-2-duo-2.16-24-inch-sp ecs.html
Which is good since the specifications for OSX Lion require a Core 2 Duo as minimum processor:
Mac computer with an Intel Core 2 Duo, Core i3, Core i5, Core i7, or Xeon processor
2GB of memory
OS X v10.6.6 or later (v10.6.8 recommended)
7GB of available space
Some features require an Apple ID; terms apply.
Some features require a compatible Internet service provider; fees may apply.
The road to OSX Lion requires you to have OSX Snow Leopard before which can be bought from Apples Online Store http://store.apple.com/us/product/MC573Z/A?fnode=MTY1NDAzOA but is not avaiable as a download.
After installation of OSX Snow Leopard and installation of neccessary updates to it you can then use the Mac App Store to buy OSX Lion and install it.
http://www.apple.com/macosx/how-to-buy/
For OSX Lion an upgrade of your RAM to 4GB might be advisable.
Stefan

Images appear then disappear in mail on 10.4.4 intel duo core mac

In mail, running 10.4.4 on my new duo core intel mac, i am getting images in mails beautifully - and then for no explicable reason they disappeare and revert to code - and nothing i do will bring them back - i have already checked the box for download images from html in mail:preferences:viewing window.
Mac duo core Intel 2006 Mac OS X (10.4.4)

I simply DID NOT have the correctly dated BACKUP SET!
So NOW with all the data, properly in my Netscape Mail "local folders" I can easiliy (but slowly) convert them to Mac Mail.
Sorry for pulling the trigger too soon, It works perfectly if I use the proper backup data.
DUH! on me!

Importing FCE to FCP and G5 iMac to Duo Core iMac issues

I mainly film & edit weddings, but work on a number of other things as well. Someone told me to try hitting escape when I get the error message window, which worked good enough on a few of the projects, but not on most. Have been using FCP 5.1.4 for about a year now and opened plenty of my old FCE 3.0 files without trouble. Switched from an iMac G5 without a Duo Core to a new one (iMac 7.1) with a Duo core in Jan, and now having all kinds of problems opening old FCE and sometimes even FCP projects started before I got the Duo Core.
There's a project I created abt 8 mos ago in FCP 5.1.4 I'm trying to open and touch up a bit in the same version of FCP, but the cursor goes into a multi-color spin and essentially freezes up. I've also tried to open the capture scratch files from this project in a new Final Cut project, but they won't open and I get this message: "File error: 1 file recognized, 0 access denied, 1 unknown." Finally, try to open the capture scratch files in Quicktime, but get this message: "an invalid public atom movie was found in the movie". This makes me wonder if the captured video files might have gotten corrupted...any idea how or what to do now?
Looks like my current system has an ATI Radeon HD2600 card. I'm not super technical when it comes to most of this. Any ideas why it won't open or what I can do to get it to work around these issues? Having to re-load footage and start completely over on these sure would be a huge pain. Please say NO
Any thoughts are appreciated and welcomed.

I mainly film & edit weddings, but work on a number of other things as well. Someone told me to try hitting escape when I get the error message window, which worked good enough on a few of the projects, but not on most. Have been using FCP 5.1.4 for about a year now and opened plenty of my old FCE 3.0 files without trouble. Switched from an iMac G5 without a Duo Core to a new one (iMac 7.1) with a Duo core in Jan, and now having all kinds of problems opening old FCE and sometimes even FCP projects started before I got the Duo Core.
There's a project I created abt 8 mos ago in FCP 5.1.4 I'm trying to open and touch up a bit in the same version of FCP, but the cursor goes into a multi-color spin and essentially freezes up. I've also tried to open the capture scratch files from this project in a new Final Cut project, but they won't open and I get this message: "File error: 1 file recognized, 0 access denied, 1 unknown." Finally, try to open the capture scratch files in Quicktime, but get this message: "an invalid public atom movie was found in the movie". This makes me wonder if the captured video files might have gotten corrupted...any idea how or what to do now?
Looks like my current system has an ATI Radeon HD2600 card. I'm not super technical when it comes to most of this. Any ideas why it won't open or what I can do to get it to work around these issues? Having to re-load footage and start completely over on these sure would be a huge pain. Please say NO
Any thoughts are appreciated and welcomed.

Intel Duo Core vs. Quad Core performance issues

Similar Messages

Maybe you are looking for