Installing additional ram memory

I am trying to install memory in my Mac Pro, but some of the risers come upon the hardware configuration panel as empty. I have moved around the memory modules and they all work, but just not when they are all installed at once. I have two sets of 2 gb modules and four 1 gb modules. Two of the 2 gig modules are are Centon and two are another brand. All of the 1 gig modules are exactly the same. Currently, I have 4x1GB modules installed and 2x2gb modules installed. My computer is reading the 2 GB modules, but only reading two of the 1GB modules. Here's my Mac configuration:
Model Identifier:    MacPro2,1
Processor Name:    Dual-Core Intel Xeon
Processor Speed:    2.66 GHz
Number Of Processors:    2
Total Number Of Cores:    4
Memory:    6 GB
Bus Speed:    1.33 GHz
When I putt all four of the 2GB modules in the first two slots and the four 1GB modules in the last two, the computer read the 1 GB modules but one of the 2GB modules????? When I removed all of the 1 GB moduels, the computer then read two of the 2GB modules. I am totally confused. I have tested all of the modules and they all work in one configuration or another, and I've checked all of the slots and they work too. Any suggestions on what I should try next?
thanks

Hi, this may or may not resolve the issue:
MacBook Pro: How to remove or install memory:
Additional notes For best performance, fill both memory slots, installing an equal memory module in each slot.
In Mac computers there is a hardware component known as the "RAM Equalizer". The function of this is impeded when the memory slots are filled with unequal memory quantities.

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Installing additional RAM into hp s5150t

I have a quad core s5150. I recently tried to add two additional RAM modules. I verified that I had purchased the correct RAM on curcial.com and by speaking with their reps. The computer would not take the RAM in any configuration. We tried seating the new RAM into the old modules one at a time and it still would not work. At last, the crucial rep told me to try and update the BIOS. Hard as I tried, for three hours, I was unable to find the BIOS update on the HP website despite looking where the HP video told me to look. There were lots of update options but no BIOS heading. The auto detect tool could not identify my computer for some reason. The HP Update tool installed with the machine said no updates were available.
I am wondering a few things, 1) Where can I find the BIOS update on the HP site? It is not in the list of updates on this page, where it is supposed to be:
http://h10025.www1.hp.com/ewfrf/wc/softwareCategory?os=4063&lc=en&cc=us&dlc=en&sw_lang=&product=4002...
2. Is it possible there is a problem or conflict beacuse the machine shipped with Windows Vista and I updated it to Windows 7? Looking in the BIOS, the last update was May of 2009, long befoe Windows 7 was updated from the old VISTA files.
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Thanks for your support, Jaco. I appreciate your input.

Installed 512mb RAM Memory and reads Empty!!!

Please help i just installed a 512mb Ram Memory chip into DIMM1 and it is reading under system profiler MEMORY as Empty and if you click DIAGNOSTICS under system profiler it says "Power On Self-Test: Last Run:2/2/07 7:52 AM
Result: Failed
Failure Type: Memory
Memory Slot: DIMM1/J31
Please help for it was not doing this yesterday with the 256mb chip inside it was reading it perfect. I went for an upgrade and lol now i lost RAM. Please Help!!!!

You might try taking the 512meg stick out and reseating it. Make sure it's all the way in.
lenn

Restart Error message after installing additional RAM. PLEASE HELP.

I have a Powerbook G4, 1.33 GHz processor, running 10.3.9. I just recently upgraded my RAM to 1GB, from 256MB. After installing the RAM I have started to encounter problems, where applications will automatically shut down, and also I am receiving a message that cover the entire screen, and states that I must restart the system by holding the power button down, when this appears nothing is functional, I can only power off. I have insured the RAM was installed correctly. I followed all proper procedures when installing. Does this mean the RAM is bad, or something else? Please help!!

Welcome to the Apple discussions.
Our Powerbooks are sensitive souls when it comes to RAM, due to the Apple architecture and how power is throttled on the memory bus. While memory can meet the Apple specs, typically cheaper RAM can fail with the symptoms you're seeing. Recommend using Crucial, Kingston (not their value ram memory, though), or Samsung. Crucial guarantees their memory will work when chosen from the memory selector on their web site.
It is possible you've just got some bad memory and could get a replacement, however, if the brand is unknown, you may want to return it and obtain one of the brands above.

Anyone install additional RAM into your new MacBook?

I slapped a new 1 gig stick into my MacBook and noticed that after removing the bracket in front of the ram slots, adding new ram and putting it back that the bracket wasn't quite flush due to the pads that cover the ram slots, even after screwing the bracket back in. Anyone else experience this? I am just curious as to whether or not it is normal. When I removed the bracket initially to get at the RAM, I don't recall if the bracket was dead flat against the slots.

oh no, the RAM installed just fine. I am speaking to the metal bracket that covers the RAM slots and needs to be removed before installing ram. This bracket has cushions that cover the slots. When I put the bracket back on after installing the RAM, I was unsure whether or not these cushions should fit under the top of the RAM slots so that the bracket is flat after being screwed back in?
If you remove the battery and look at the RAM slots, is the bracket after RAM installation completely flat?

Kernel panic after installing additional ram

Hi there.
(I think this should go here, not in laptop issues because it seems to be more hardware-related)
I have a laptop Acer Aspire 2920Z with 2x512 Mb stock ram and I recently bought an memory upgrade 2x2gb. Any of them works when inserted separately, but when I install both, I see kernel panic upon starting X on my i686 Arch installation (and /proc/meminfo shows that I have only 3Gb).
The same behaviour occurs when I try to boot from latest Arch install iso or x86_64 archbang livecd.
My BIOS is updated to latest version and it shows that I have 4Gb of RAM installed.
Right now I installed x86_64 linux kernel but I still have kernel_panic on booting my machine.
Is there any chance that I can use 4gb ram on my laptop?
Also, what are the ways to save those error messages that kernel panic provides? (aside from just taking a picture of the screen with my camera)

cra wrote:I installed kernel by changing architecture param in pacman.conf, running pacman -Syy and pacman -S linux, as described in the corresponding page on the wiki, but without reinstalling every single package I have
Do that step.
EDIT:
cra wrote:Any of them works when inserted separately, but when I install both, I see kernel panic upon starting X on my i686 Arch installation (and /proc/meminfo shows that I have only 3Gb).
The same behaviour occurs when I try to boot from latest Arch install iso or x86_64 archbang livecd.
Wait, you mean just booting the livecd gets you a kernel panic? Insert both of them at the same time, and the test them with memtest86+
Chances are your motherboard pins could have a problem. A problem that is noticiable when you insert both sticks.
Test them with memtest86+.
Last edited by chris_l (2012-12-10 16:22:24)

Installed Additional RAM - anything else?

I just installed an additional 512mb of RAM on my iBook, bringing the total RAM up to 1GB. The installation was pretty painless, but now I'm wondering: is there anything I should do to double-check the RAM to make sure it is working properly? On the 'About this Mac' page, it does show that my Mac now has 1GB of RAM, which is a good sign - but should I pursue anything else like a Hardware Test or the like just to be sure?

Usually, you'll be alright, but if things start acting odd, like your machine stops booting, etc. that's when you might start thinking there is something wrong with your RAM.
Until then, chill out and enjoy things.
Brian

Anyone know if there is a video for installing additional ram in an early 80's intel Imac?

I bought some ram for my early 80s Imac. Looking for an install video to help me to put it in.

I did mean 2008. Thanks for the link. Got a crucial 2 channel kit thinking I would add them to the original 1 gig in the computer but the videos show people taking out the original, making the 3 gig I wanted (so I can install Yosemite) only 2 gig which I don't know if will work because some of it will be used up. I want to try to install but am afraid if I do and its not enough, they won't take it back. Oh, in case anyone wondering .... I have no experience at doing stuff to computers at all ... none. Its frustrating. I can build houses, cabinets, anything about and this Imac scares me to death, lol. And I bought Crucial memory because guy at Apple store said very good and cheaper. Thank you

Installing new ram memory

Hello All,
I have recently installed a new ram into my mac. I installed a 2GB ram and put it into the right slot. I left the memory in the left slot there. Everything seems to be running fine (and faster) however everytime I close the lid to my mac and reopen it, the whole computer starts up as if I have shut it down. I never shut it down though. Can someone tell me if I did something wrong and if I can fix it?
Thank you so much!

As for your last two question I don't really understand them...
OK.
"Try Disk Utility
1. Insert the Mac OS X Install disc, then restart the computer while holding the C key.
2. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu. (In Mac OS X 10.4 or later, you must select your language first.)
*Important: Do not click Continue in the first screen of the Installer. If you do, you must restart from the disc again to access Disk Utility.*
3. Click the First Aid tab.
4. Select your Mac OS X volume.
5. Click Repair. Disk Utility checks and repairs the disk."
http://docs.info.apple.com/article.html?artnum=106214
Then try a Safe Boot, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, reboot when it completes.
(Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive.)
If perchance you can't find your install Disc, at least try it from the Safe Boot part onward.
2nd one, since you have a Laptop, I was wondering if it was running off the Battery or plugged into AC with the charger?

Installed additional RAM but computer performance now worse

Can anybody please help? I have a T61 that came with 2Gb RAM (1GB + 1GB) and I recently purchased another 2GB chip. The problem is that after installation I had a total RAM of 3GB (1GB + 2GB), the Windows Experience Index score actually decreased! It went from 3.5 to 3.1!!
Also, under the category Memory (RAM), the score remained unchanged at 4.8!! Should this have at least increased? Also, I am not noticing any improvements in performance.
Is there something that I haven't done or is there anything I should do after the installation? And yes, I did refresh/update from index score.
Please don't tell me I need to buy a new notebook!!!
Thanks

Part of the problem is that with two differents sized DIMMs you lose the Dual Channel mode feature of the RAM, so the effective throughput of the RAM would be lowered compared to the two 1GB modules that operated in dual-channel.
If possible I would suggest 2 x 2G modules for a total of 4GB or if you can afford it 2 x 4G modules for a total of 8GB this will keep the dual channel mode active and the RAM performance optimal.
http://en.wikipedia.org/wiki/Dual-channel_architecture
T400 6475-8Q5 | 8GB RAM | WXGA+ | Seagate 500GB 7200 | Win 7 Pro 64-bit............T61 7658-CTR | 8GB RAM | WD Black 320GB

Installing additional RAM

hi guys, just bought my first mac this week. I know very little about computers, especially mac, but im trying to learn. i intend to use this computer mainly for sibelius and other music software.
anywho, this question has likely been asked already on this forum, but i ordered the MBP with the 1 gig of ram, and i have bought an additional gig. can anyone walk me through actually inserting this thing into my computer?
thanks
dan
MacBook Pro

Um, did you buy it from apple as 1 stick or 2? If
you bought it as two, then you really need to replace
both sticks else the most you can get is 1.5 gigs
(and everyone will tell you its bad to have unmatched
sticks, since it kills dual channel ram).
How much of a performance hit is it really? I heard someone saying that it kills video performance, but I don't know. This months MacAddict ran some RAM tests using Photoshop (via Rosetta) on an intel MacMini. These are the results, from best performance to worst:
2Gig (2x1Gig)
1.5Gig (1x1Gig, 1x512MB)
1.25 (1x1Gig, 1x256)
1Gig (1x1Gig)
1Gig (2x512)
(the above 2 were pretty much dead even)
768 (1x512, 1x256)
512 (2x256)
512 (1x512)
This somewhat unscientific test tells me that with small amounts of ram (512 total) 2 sticks are better than 1. However, with 1Gig, "mismatched" actually performs equally to 2 sticks. Also a single 1Gig is outperformed by 1.256Gig (mismatched).
Basically the performance diff is very slight. I got mine w/ 1x512, and I have no qualms at all in running 1.5Gig mismatched (I just bought a 1Gig stick).
The article even has a little box titled "THE MATCHED-PAIR MYTH" and concludes that mismatching a pair doesn't really matter.
"in our testing, matched-pair RAM didn't provide a quantifiable improvement over mismatched RAM."
Brain21

What do I look for when installing additional RAM?

I have an old Quicksilver G4 that has three slots in it that are all being used, 640 mb of RAM (2-256 mb and 1-128 mb sticks, SDRAM, and speed PC133-333) and a Mirror Door G4 with two open slots, 768 mb of RAM (1-256 mb and 1-512 mb sticks, DDR SDRAM).
I want to add RAM to both of these. Can I add to both of these or swap out for larger mb sticks? Can someone please tell me what my options are?
Thanks in advance.
PowerMac G5 2.3GHz 250 HD 1.5 Gb RAM Mac OS X (10.4.6)

Hi Kately:
Both the QuickSilver and the MDD G4s will take 512MB in each RAM slot. You'll want the best quality RAM you can get (Panther and Tiger have higher specs for RAM than earlier versions of the Mac OS), I'd recommend Kingston or Azen.
The QuickSilver takes PC133 SDRAM, whereas the MDD either takes PC2100 or PC2700 DDR SDRAM. If you mix PC2100 and PC2700, the PC2700 will operate at PC2100, so you'll want to match what's already in your towers. The easiest way is to take one module from each computer with you when you buy your RAM.
Hope this helps,
Andrew Penner

HP Probook additional RAM memory

Hello! I have a laptop Hp probook 450 and 4GB RAM and i want to put another one http://www.emag.ro/memorie-kingston-hyperx-blu-4gb-ddr3-1600mhz-cl9-1-65v-khx1600c9d3b1-4g/pd/E3M7DB... can I do this without lost the warranty ? And can I do this alone ? Please answer !
This question was solved.
View Solution.

Hi,
Adding RAM to your machine won't void warranty IF this won't cause any damage for the machine. And you CAN'T use that RAM, it won't fit. You have to use laptop RAM. Quick and easy: get a pen, open the RAM door and record what is in there then go out to buy the same.
Regards.
BH
**Click the KUDOS thumb up on the left to say 'Thanks'**
Make it easier for other people to find solutions by marking a Reply 'Accept as Solution' if it solves your problem.

Second internal HD, additional RAM & proper settings for them

Hi guy!
I want to thank you in advance for reading my questions and answering it. It may be long.
Today, I've received my memory upgrade 4GB (2X2) from OWC. And my 2nd hard drive Seagate Baracuda 500GB 7200.
I read all my the instructions and installed all memory and HD myself, all seams to be working, my system shows RAM and HD. However, there are some questions I have unresolved, I called tech support they couldn't tell me more than just "call the HD manufacture and ask them"
1st. After I've installed HD and started the computer, the window came and said that I need to initialize the HD. I clicked "initilialize" it took me to disk ut. I erased HD and gave it a name "Mac HD2" Now, it is showing me that I only have 465.64 GB of space available. It shows that only 108MB is used. Where is the rest? I know that it won't show the whole 500GB, but it ate up 35GB, itsn't that too much? So, my question about this is: Should I be doing something else with this HD? Should I be calling the company that sold HD and have them replce it? Or is it ok to hav such a loss?
2nd. What is the best way to place my folders & files on both HDs. I was thinking to take my Documents/Movies/Music/Pictures folders and just place them on HD2 and keep HD1 for applications only. Is this right?
3rd. My HD1 is 160GB (148.9 as per info.) My Documents/Movies/Music/Pictures folders are about 55Gb my application folder is 8 GB I should have about 86GB left (if we take 148-55-8) I only have 67. What am I missing? The user folder (yuriyork) is 60GB. I'm totally confused with where the space is.
With this said, I'm back to the 2nd question what files/folders I should move to HD2? I just want to do it right to try and up the computer performance.
4th. When I do move files/folders to HD2 should I just open HD1 and HD2 in finder and simply drug and drop folders from one window to another? I think it's not right way of doing it. I think I need to somehow specify to the system that Documents/Movies/Music/Pictures folders are now located on HD2
5th. With increase RAM, should I do any setting on OSX to tell it that there is lots of RAM and that it can use it as much as it wants? Like for example, I know that in Virtual PC I can set up the amount of RAM it uses. So, with that I thought that I may need to specify something like that in some other settings, if so than where?
I hope I didn't confuse you all with some much stuff. To hopefully simplify this, I'm going to put the JPG file on the web for you guy to see what folder are what size and may be give me an idea what is the best way to do it.
Here is the photo:
Again, thank you for taking your time to answer my questions, you guys have always been very helpful.
Thanks to all!!!

#1: The primary reason for the discrepancy is numbering convention. To hard drive manufacturers, a kilobyte is 1,000 bytes, a megabyte is 1,000,000 bytes, and a gigabyte is exactly 1 billion bytes, so 500GB is 500,000,000,000 bytes. Computers, using the binary system, don't use 1,000 to represent a kilobyte; instead they use 1,024.
Therefore, when you divide 500,000,000,000 by 1,024 (KB), again by 1,024 (MB), and again by 1,024 (GB), you'll get 465.66 GB, which is almost exactly what you're seeing.
#2: When I installed a second hard drive in my G5, I moved my Music, Pictures, and Movies folders to this drive. Then, I just had to point iTunes and iPhoto to the new directories. The sidebar links still take me to the original folders on the original drive, but that could likely be fixed if I replace the folders with an alias or symbolic link that pointed to the new location.
#3: Try downloading an app such as Omni DiskSweeper to help locate where all the space has gone to. It'll give you a breakdown by each folder and subfolder on the drive.
#4: As I stated in #2, an alias or symbolic link should work if you want the sidebar links to continue to function after moving the folders. Otherwise, just direct iTunes and iPhoto to the new locations.
#5: OS X manages memory on its own for each application. There's no longer the need to allocate RAM to each app like there was in the pre-OSX days.
When installing additional RAM, it's often recommended to reset the NVRAM to ensure that the computer recognizes all of it properly. To do this, reboot the computer while holding down the Command, Option, O, & F keys. This will boot you into open firmware. At the prompt, type the following (and press return after each one, of course):
reset-nvram
set-defaults
reset-all
The computer should reboot after the final command.

I want to install dedicated video memory/graphics

I want to install dedicated video memory. I have macbook pro 13 inch late 2011 model with intel hd 3000 graphics. If not possible can i install additional ram and dedicate it to video graphics.
I want to play games like GTA 4 and other semi high end games that require dedicated memory cards.
Please tell me a fix.
[email protected]

I just bought this perhaps wont sell it ever, Saved a whole lot money for a year for a macbook. I wanted to use final cut and stuff,
I read that if you upgrade the ram to 8 gb you may get something like 512 mb of video dedicated memory, currently it is 384.
Guess, I made a somewhat okay choice.
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like th feel of operating system , and everything is so coll, the multitouch pad, is so convenient.

Installing additional ram memory

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