Benefits of faster 1gb chip?

Just a question on 1gb memory chips for the 20" imac 2.1GHz
On apples site they only sell the PC2-4200 as a upgrade. On crucial.com they also have in addition to the PC2-4200 (DDR2-533) a PC2-5300 (DDR2-667), both are listed as chips for this computer.
I run a few memory hungry programs and just need the fastest that I can get. Is there any difference between these two chips that the imac will notice or is the difference in price better spent elsewhere?
Also, any speculation on when the price of the 2gb chips will come down?
And why did apple decide to only provide one slot to upgrade. It sounds pretty cheap to me and it really made me consider cancelling my order when I found out (due to the cost of a 2gb chip), as this computer is only to do bits of work at home while I'll away from the studio. While I'l thinking it also doesn't seem any faster then my wifes emac 1.25GHz with 756mg RAM. I would have thought that the 2.1 GHz would have blown it away. Haven't noticed a difference as of yet.
Thanks,
Rob

Robert, first of all welcome to the discussions!
I went from the same model eMac to my first gen iMac and at first I was not overly impressed with the speed difference as there seemed to be little difference at all. The iMac shines when you start to do more processor intensive tasks like video and such. I am blown away by how well it performs then.
For comparison, I have a home-built Athlon XP 3000+ machine that I use mostly for gaming, but tried a video project on that before moving to the iMac and there was a huge leap forward in speed, stability, and overall quality of the conversion.
PS - myhighway, I feel like I am chasing you around today - LOL!

Similar Messages

Share fails when I try to share a large movie file (6.3g) to a very fast SD chip. Works fine sharing to a hard disk. Any ideas

Share fails when I try to share a very large project file (6.3g) to a very fast SD chip. Works fine sharing to a hard disk. Using iMovie 10.0.5. Any ideas?

If the volume's formatted as FAT32, it can't hold files which are 4GB or larger regardless of how much free space it has.
(124768)

New 1GB Chip not seen in System Profiler

Hello all.
A friend of mine just recently installed a new 1GB RAM chip into his PowerBook G4 1Ghz. According to system profiler he has 256MB installed in one slot and the other was empty. So he went to install the new one and removed a 256 MB chip from the bottom panel and inserted the new 1GB chip. After booting back up it still says 256MB and the other slot is empty.
Here is what we see:
SODIMM0/J25LOWER:
Size: 256 MB
Type: DDR SDRAM
Speed:PC2700U-25330
SODIMM1/J25UPPER:
Size: Empty
Type: Empty
Speed:Empty
So here's the ultimate question. If the LowerDIMM is the one under the laptop, why does it still say 256MB.
Also, is there a memory slot under the keyboard on this model? I am unfamiliar with it and all the sites I've seen cover this bottom slot.
Thanks to all who read, research and/or reply.
-Phantom27

Hi, phantom. If I understand your post correctly, there has never been any RAM in the slot that System Profiler calls the upper one, so that slot should appear empty. If a 1GB module in the lower slot is read as a 256MB module, it probably isn't the right RAM for the Powerbook. Aluminum PBs are notoriously choosy about RAM: it really has to be right. Dependable brands are Samsung, Hynix, Crucial, and the higher-priced Kingston line. Kingston's "Value RAM" line generally doesn't work. If you use Crucial's online RAM selector to choose the right RAM for your model, Crucial will guarantee that it's compatible and functional. No matter what RAM you buy or whom you buy it from, always be sure to get a lifetime warranty of serviceability and compatibility with your Powerbook and an assurance that there will be no "restocking fee" or other ripoff charges if you find that it doesn't work.
In short, using cheap no-name RAM in an Albook usually doesn't work, and is more trouble than the small cost saving is worth.

Apple Mail nutzt jetzt fast 1GB

Apple Mail nutzt jetzt fast 1GB Speicher auf meinem IPad. Was kann ich tun? Mehr als 1000 Mails einzeln zu löschen, ist mir zu umständlich. Ich fange jetzt an, meine Accounts zu löschen und neu anzulegen. Früher gab es die Zeitbegrenzung, jetzt nicht mehr. Oder gibt es andere Apps, die besser sind?

Kernal panics are usually caused by a hardware problem. When trying to troubleshoot problems, disconnect all external devices except your monitor, kbd & mouse. Do you experience the same problems?
May be a solution on one of these links.
Troubleshooting
The X Lab (Troubleshooting & Maintenance of OS X)
OS X Routine Maintenance & Generic Troubleshooting
Prevent Mac Disasters
Kernel Panic
Mac OS X Kernel Panic FAQ
Mac OS X Kernel Panic FAQ
Resolving Kernel Panics
12-Step Program to Isolate Freezes and/or Kernel Panics
 Cheers, Tom

1GB chip alone better than 1GB + 256MB Chip?

I just added a 1GB RAM chip to my 1.6 Ghz PPC iMac. Would it be even worth it to leave the original 256MB chip in the second slot? Or would it cause more problems than the 256MBs are worth? (I know it's not a dual processor so matching RAM chips may not be as important, but I've heard that even single PPC processors prefer matching chips).

Hi Enio Rigolin2-
Although you might see a small speed up if you used matched pairs, having the additional RAM will be just as useful and it won't be any slower than using the 1GB by itself.
Luck-
-DP

W520 now available with faster 2960XM chip.

Picked this little tidbit up from over at the notebookreview.com forum ( http://forum.notebookreview.com/lenovo-ibm/ )today.
When I looked at the configurator, I had to choose the priciest of the three starting configs to get a shot at this chip.
Not cheap, but there if you need/want the extra horsepower...
A 2960XM chip with 32G of memory and you have one screamin' laptop on your hands...

thitiv wrote:
huberth wrote:
Whew!
CPU Name Passmark CPU Mark (higher is better)
Intel Core i7-2720QM @ 2.20GHz 7106
Intel Core i7-2760QM @ 2.40GHz 7549
Intel Core i7-2820QM @ 2.30GHz 7478
Intel Core i7-2860QM @ 2.50GHz 8170
Intel Core i7-2920XM @ 2.50GHz 7586
Intel Core i7-2960XM @ 2.70GHz 9765
This means the CPU is 34% faster than the i7-2820 and 36% faster than the i7-2730.
I am considering buying the i7-2960 chip and doing the upgrade myself...
If you get it, please run some PCMark Vantage benchmarks and post them here.
@huberth,
back on September 17 I did some tests per requests by the folks at NotebookReview.com.
I got the PCMark Vantage score of 16481 (see results at NVIDIA Quadro 2000M video card benchmark result - Intel(R) Core(TM) i7-2960XM CPU @ 2.70GHz,LENOVO 4...) and
the PCMark 7 score of 4479 (see results at NVIDIA Quadro 2000M video card benchmark result - Intel(R) Core(TM) i7-2960XM CPU @ 2.70GHz,LENOVO 4....
The machine is in optimus mode. Its full specification is
ThinkPad W520 (4270-CTO) Core i7-2960XM 2.7/3.7 GHz | 16GB G.Skill DDR3 PC3-10666
256GB Crucial M4 & 256GB Crucial C300 RealSSD's | Ultrabay Blu-ray Burner
Intel Centrino Ultimate-N 6300 | Ericsson F5521gw WWAN | NVIDIA Quadro 2000M
15.6" FHD 1920x1080 | ThinkPad Battery 55++ (9-cell) & Battery 27++ (9-cell slice)
I'm not familiar with PCMark so I really have no idea on the scores. Comments please!
I am getting 19228 with PCMarkVantage
http://3dmark.com/pcmv/445394;jsessionid=15bclcl09lalb?show_ads=true&page=%2Fpcmv%2F445394%3Fkey%3DS...
and 4,558 with PCMark 7
http://3dmark.com/pcm7/52667;jsessionid=vzzix689xexc?show_ads=true&page=%2Fpcm7%2F52667%3Fkey%3DXw5c...
but I have 2 SSDs in RAID0.
With a single Intel 510 SSD the PCMark Vantage score was: 16,302
http://3dmark.com/pcmv/439951;jsessionid=1u0rpikc26ooy?show_ads=true&page=%2Fpcmv%2F439951%3Fkey%3DJ...
I would have expected that you get higher scores. Is it possible that the fan can't handle the additional cooling and the CPU gets too hot and throttles itself? (Lenovo uses a more powerful (and louder) fan for the 2920/2960.
W520 4270CTO i7-2820QM Quadro2000M 1920x1080 Display 16GB RAM 2x240GB Intel 510 SSDs (RAID 0) - BIOS 1.42 - PCMark7:4,568
Samsung Series 9 15-inch NP900X4C-A03US - PCMark7: 4674

So...which is a faster raid chip?Promise or Intel?

lo there
just recieved my second 36gb 10000 sata raptor,and wanna set it up as RAID 0,what do u guys think?gonna probebly use 64 stripe -found that size as the fastest,but i aint sure which chip will give me better bench...the promis sata raid,or the Intel chip?
any ideas?tips?
cheers
Ofer

The Sandra hdd benchmark has NEVER worked properly for me. I could take 3 different tests and have results vary as much as 30%. If I set in the options "disable Windows Cache" I get a better score which common sense and the Sandra help files say should NOT be the case. I spent days playing with settings and moving hardware around trying to figure out if I was doing something wrong. I finally started using other programs that give consistent results that are repeatable.
Don't forget that the free version of PCMark only tests 1 of your system drives and you can't change it. Are you sure it's not measuring the Maxtor?
I'll tell ya what. I'll post a result from Sandra later if you try Aida32 and post a Random Read avg result. Get It Here
The drive tests are in the "plugin" menu.
You want the Sandra test with or without Windows Cache disabled?

Memory Juggle - Not all chips are recognized.

I have a MacPro. It is the base model 2.8 quad core with two 1GB 800Mhz chips in it.
I added four 2GB chips to the machine (3rd party)
Of course what i am doing/describing is paired per both pull-out memory cards.
I moved the Apple 1GB chips to the 3rd slot and put the two 2GB chips in slot one and two.
When doing this, the apple chips in slot 3 are not recognized.
i moved the apple chips back to slot one and the 2GB chips to slot 2 and 3. After doing this, the chips in slot 2 are not recognized.
no matter what configuration i try, i am not getting the full 10GB and not all my chips are recognized.
each time i reconfigure the chips, a different one is unrecognizable so it isn't like any one specific chip is bad.
any idea why and how to solve this?

As mentioned above, you must install the memory in pairs in each slot. You can't have a stick in slot 3 without a stick in slot 4, for example.
Put your 2GB sticks in slots 1&2 of each riser. Then put your 2 1GB sticks in slots 3&4 of riser A.
If memory is still not recognized, reseat it, as mentioned above. You could also try restarting and resetting the PRAM; do this by holding down command/option/p/r while restarting, and hold them down until you hear 2 or 3 startup chimes.

Please Help :( iMac 20" refuses to boot up with anymore than 1gb ram?

Please Help iMac 20" refuses to boot up with anymore than 1gb ram? It was fine 4 days ago and had been working with a 1gb stick in one slot and a 2gb stick, which had replaced the orignal 1gb stick that I got it with, in the other and it had shown 3gb of ram and was working just fine with that since November? It went to sleep briefly 4 days ago while I was waiting on a customer and I came back to try to wake it up and it never would forcing me to hard boot it. When I did that it would only go to a black screen with a solid white light on the power indicator. Over and over again and same thing. I read and tried every suggestion I could possibly find in this and a few other mac forums to no avail.
I finally after reading about RAM issues etc. I decided to power off and take out the ram sticks and try them one at a time in each slot. So I took out the 2gb stick and did the SMC reset and it would boot up and work just fine with the 1 gb of ram. So then I went through the same process with the 2gb stick and it would not boot up only go to a black screen with white solid light again (NOT flashing). So then I tried the other original 1gb I had replaced with the 2gb and it worked just find like the other 1gb. So then I tried just 1gb stick in the other ram slot (back facing one) and with just the 1gb strip it booted up and worked fine. Tried it with the other 1gb stick and once again that one too worked just fine. So I determined it wasn't the slot itself I thought? I then tried the 2gb in the back slot and it would not boot only go to the black screen white solid light deal like before. So I thought well ok it's obviously the 2gb ram must have somehow went bad (even though I have only had it since November) and I thought well I will just use the (2) 1gb sticks in each slot and then that will at least give me 2gb because only 1gb really ***** LOL. So I proceeded to go through the same shut down process installed both sticks (I always push them to I feel them click and my fingers have a nice indention on them) reset the SMC and turned the power one and.... It would only go to the black screen with white solid light on power indicator???? I went through the same above process at least 3 times and again today a few times and I can't figure it out and I tried to search and search and I couldn't find anything like what I am experiencing.....What happened? Please help this slow Imac is killing me. It will work with 1gb ram only nothing more? Here are the specifics of my Imac.
It is a 20" Late 2006 Intel Core 2 Duo 2.16 ATI Radeon X1600 256 MB graphics card and Ram with now only 1gb (did have 3gb) and I am running OSX Lion 10.7.5
When I go to system report and go under memory it shows this:
BANK 0/DIMM0:
Size:          1 GB
Type:          DDR2 SDRAM
Speed:          667 MHz
Status:          OK
Manufacturer:          0xCE00000000000000
Part Number:          0x4D342037305432393533435A332D43453620
BANK 1/DIMM1:
Size:          Empty
Type:          Empty
Speed:          Empty
Status:          Empty
Manufacturer:          Empty
Part Number:          Empty
Serial Number:          Empty
Any help I can get would really be appreciated. Thanks in advance
ALSO...Here is also a pic of the system log right before it happened. It even changed the date to 07/2014????
I have some more if needed???????????????
<Personal Information Edited by Host>

The Memtest just completed and came back like this? It only test the single 1gb chip because anything more in this computer it won't go past the black screen with solid white power light.
Memtest version 4.22 (64-bit)
Copyright (C) 2004 Charles Cazabon
Copyright (C) 2004-2008 Tony Scaminaci (Macintosh port)
Licensed under the GNU General Public License version 2 only
NOTE: No command-line arguments have been specified
Using defaults: Test all available memory, one test pass, no logfile
Mac OS X 10.7.5 (11G63) running in multiuser mode
Memory Page Size: 4096
System has 2 Intel core(s) with SSE
Requested memory: 250MB (263086080 bytes)
Available memory: 250MB (263086080 bytes)
Allocated memory: 250MB (263086080 bytes) at local address 0x0000000101000000
Attempting memory lock... locked successfully
Partitioning memory into 2 comparison buffers...
Buffer A: 125MB (131543040 bytes) starts at local address 0x0000000101000000
Buffer B: 125MB (131543040 bytes) starts at local address 0x0000000108d73000
Running 1 test sequence... (CTRL-C to quit)
Test sequence 1 of 1:
Running tests on full 250MB region...
Stuck Address       : ok
Linear PRN          : ok
Running comparison tests using 125MB buffers...
Random Value        : ok
Compare XOR         : ok
Compare SUB         : ok
Compare MUL         : ok
Compare DIV         : ok
Compare OR          : ok
Compare AND         : ok
Sequential Increment: ok
Solid Bits          : ok
Block Sequential    : ok
Checkerboard        : ok
Bit Spread          : ok
Bit Flip            : ok
Walking Ones        : ok
Walking Zeroes      : ok
All tests passed! Execution time: 362 seconds.
logout
[Process completed]
Seems Okay I guess?

1GB SODIMM for Intel iMacs in stock here

http://eshop.macsales.com/MyOWC/Upgrades.cfm?model=241&type=Memory&TI=%23TimeFor mat%28Now%28%29%2C&shoupgrds=ShowUpgrades
$109 per 1GB stick. Lifetime warranty.
Got mine today.

Think yourself lucky, us in the UK get shafted in
very special ways.
1 gig on Crucial UK is just shy of £100 or $175 to
you guys.
Sigh.
I feel your pain. Here in Canada, I've had 3 quotes for memory that fall between $174-$190 per 1GB chip! I'd order from the U.S. but it seems that duty and shipping costs make it less appealing - particularly in the event of defective RAM.

Intel chip due for powermac?

I want to purchase a new computer in the near future. I was really intrigued by the newer faster Intel chip that the imac now has. I need a high powered power mac because I use huge files with tons of graphics programs. Does anyone know if they are planning on making the powermac with the Intel chip in the near future. If so, I will wait to purchase a new computer. I am not in a bad hurry so I want to spend my money where I want it. Thanks!

Last I heard, all new Mac are scheduled to move to Intel CPUs by the end of 2006. This may happen much faster than planned, as they are already 6 months ahead of schedule with this first round of Intel based Macs, but that's only speculation.
It will happen, just nobody knows exactly when.

Laptop (p205d-S7436) freezes on startup only with two (2) (1GB + 1GB) RAM modules

it works fine with just one 1GB chip in any slot
Laptop was purchased in Nov 2007 with 32 bit Vista and 2GB RAM (1 + 1) It worked fine for approximately a year, and then started freezing randomly, usually after logon. Removing any RAM module fixes the problem (but I obviously want to run it with 2GB)
I've been applying practically all updates (although I've reverted the LAN driver, the Audio driver and the Video driver to the original 2007 versions). Still freezes, even in Safe Mode (without networking)
again, as long as I remove a RAM chip, everything works fine. What could it be?
Please help
Message Edited by mike_b on 02-15-2009 08:46 PM

Terminator wrote:The easiest solution for your mouse would be to remove bluez (and possibly not start bluetooth at start up). Assuming it is a logitech mouse/keyboard (mine doesn't work with bluez either), it should be a problem in the settings of bluez, check google.
Note that you don't need bluetooth for your mouse and keyboard to work since you use the dongle.
Thanks for the reply terminator! I tried removing bluez but got that a lot of other packages depends on it so what I did was install blueman and paired the mouse from there.
Now it pairs fine and works automatically even after a reboot. But, there's still the issue that I have to remove the dongle and connect it again on boot for it to work.
Any ideas?

G4 700mHz What is max RAM? Can I go over 1GB?

I upgraded the RAM to what the factory says is the max - 1 GB. But after installing Tiger the machine is very slow. If I put a 1GB chip in the factory slot will the machine recognize it?
I did do a search for the answer before posting and mainly say references to the 1Ghz machines.

Hey,
I don't believe there are any 1GB RAM modules than will fit in this model of iMac, (144-pin PC133). So 1GB will be the max. (2 x 512mb)
Hope this helps

Thinkpad's and N100's w/ 945PM chipset can't address 3G Ram but Dell Can

Since I am a programmer, I am particularly interested in having the maximum amount of Ram available under 32 bit Windows.
Unfortunately, I have to buy a T61p to enable me to use 4GB.
From a reply to a NoteBook review Forum:
http://forum.notebookreview.com/archive/index.php/t-136639.html
At work, we have both Dell XPS and IBM/Lenovo Thinkpad laptops. We choose the T60 models for their compactness/weight and reliability, while we choose the XPS M1710 and M2010 for their 17 and 20-inch screens and somewhat faster graphics chips. The ThinkPad T60 computers have problems accessing over 3GB RAM, and that is NOT because of the chipset or the OS that we use, but, it is only because of the incompetent designers/engineers at IBM or Lenovo; let me explain:
We have tried to install both 32-bit and 64-bit version of Vista, Windows Server 2003 R2 STD, Win XP and different dists of LINUX on T60, T60p, Z61, Z61p, Z61m, (X60 and T43) and Lenovo 3000 series, but they simply can NOT access memory over 3GB (X60 and T43 can not support that since their chipset seem to have accessing issues over the magic 3GB, but we tried anyway)
We also tried the same thing on Dell XPS M1710 and M2010, and they could access almost the ENTIRE 4 GB installed even with 32-bit version of Windows Vista (BTW, 32-bit Vista can access 16 GB RAM with the right chipset so...). Of course, now you can guess that it was no problem with the 64-bit version of the OS:es we tried.
The Dell XPS M1710 and M2010 use exactly the same chipset found in T60 and Z60 series (Mobile Intel 945PM Express Chipset). In December 2006, we even opened a T60p (model 2007 8JG) and compared the chipset with the Dell XPS M1710, and well, I suppose that you have already guessed that it was the same chipset in both machines.
Honestly, I hoped that we would find the Mobile Intel 945 GM or GMS chipset in the T60 laptops (those chipsets seem to have this 3GB limit), since we had a BIG argue with the support guys at Lenovo, and they came with totally silly answers why the computers can not access over 3GB RAM. They even asked me what I need 4GB RAM for!! Can you imagine that?! You can ask ANY programmer/developer who works with virtual machines (both VPC and VMWare or even Parallels) and everyone will tell you that you can not have too much RAM!!! And it IS A BIG difference between 3GB and 4GB. However...
Now, we have heard rumors that HP NX94xx also can access 4GB RAM installed, but I can not confirm it myself, since I have not seen it myself.
And now, regarding to your post about mixing 2GB SO-DIMM with 1GB SO-DIMM, I would not recommend it. The 2GB SO-DIMM memory modules are pretty cheap now, and besides, you will lose a lot of speed mixing 2GB with 1GB memory modules. Just try different benchmarking programs and you will see. If you want to see quick results without a lot of installations, try Memtest86+
However, I think that it is very rotten that IBM/Lenovo does not care about their customers and lets a lot of incompetent technicians answer the phone. I have tried to come in contact with higher bosses and engineers, but they are simply unavailable. But it must be a way that we customers can make them hear us.. I only do not know how! :-/
And so, here ends my first (and long) post in here!
From the thinkpad forum, there is another confirmation, but the author is not aware that Dell did a better job with the P chipset:
T60/T61/p memory limitations -- the definitive answer [pics]
http://forum.thinkpads.com/viewtopic.php?t=49703
update 10/25/2007: now includes T60/p information.
T60 and T60p:
the T60 and T60p are based off of the intel socket M processors. no matter how much memory you install in these thinkpads, only 3GB will be addressable regardless of operating system used. this is a physical limitation and there is absolutely no workaround. if you have a T60/p then installing 4GB total system memory is a waste. save your money, stop at 3GB, and put the savings either in the bank or toward a T61/p if you want 4GB.
quoted from official lenovo documentation:
Quote: Maximum memory capacity may require the replacement of standard component with largest supported component available. On ThinkPad systems with an Intel 945GM, 945PM, GM965, or PM965 chipset, even though it is possible to physically install 4GB of memory, the actual amount of memory addressable by an operating system will be limited to 3GB. This limitation does not exist with the Intel GM965 and PM965 with the 64-bit operating systems Windows XP Professional 64-bit and Windows Vista 64-bit Editions.
the key point to take away from this quote: the T60 and T60p are based off of the 945GM and 945PM chipsets and therefore fall under the 3GB physical limitation as stated above. even with 4GB total system memory and a capable OS, you still can't see or use more 3GB no matter what you do.
T61 and T61p:
the T61 and T61p are based off of the intel socket P processors. these systems are capable of using up to 4GB total system memory as long as you use the proper OS. below are the results from the four most popular microsoft OSes tested on my T61p.

i wrote the article over at TPF regarding T60/1/p memory limitations.
while i've read that certain dell models can supposedly access all 4GB, i have yet to see definitive proof backing this up.   from my understanding, dell wrote their BIOSes to report the maximum installed memory but the systems still cannot utilize more than 3GB regardless of what is reported.   dell is the only manufacturer with a 945-based system which claims to use all 4GB so it leads me to think that something fishy is going on.   if the 945 could use more than 3GB then you'd think lenovo, apple, HP, etc. would have been able to pull it off as well.
before buying my T61p i performed weeks of research on the subject of 3GB/4GB limitations in chipsets.   i have yet to find definitive evidence showing that a merom-based system can truly access more than 3GB because of the chipset's lack of memory hoisting capability.   santa rosa seems to be the first mobile chipset supporting memory hoisting (which is necessary for moving memory addresses above the 4GB mark so that all 4GB of physical memory can be addressed by the OS).
the simple solution is to buy a T61p.   while the T60p did have optional IPS displays, the T61/p is better in absolutely every aspect except display quality.   i've had my hands on numerous T60/p systems of friends/family/colleagues and wouldn't trade my T61p for any of them.   my next upgrade won't happen until intel makes a mobile chipset able to address 8GB+ system memory (which santa rosa very well may be able to do but we won't know for sure until 4GB SODIMMs are released for public consumption).
ThinkStation C20
ThinkPad X1C · X220 · X60T · s30 · 600

N100's and Thinkpads w/ 945PM chipset can't address 3G Ram but Dell Can

From a reply to a NoteBook review Forum:
http://forum.notebookreview.com/archive/index.php/t-136639.html
At work, we have both Dell XPS and IBM/Lenovo Thinkpad laptops. We choose the T60 models for their compactness/weight and reliability, while we choose the XPS M1710 and M2010 for their 17 and 20-inch screens and somewhat faster graphics chips. The ThinkPad T60 computers have problems accessing over 3GB RAM, and that is NOT because of the chipset or the OS that we use, but, it is only because of the incompetent designers/engineers at IBM or Lenovo; let me explain:
We have tried to install both 32-bit and 64-bit version of Vista, Windows Server 2003 R2 STD, Win XP and different dists of LINUX on T60, T60p, Z61, Z61p, Z61m, (X60 and T43) and Lenovo 3000 series, but they simply can NOT access memory over 3GB (X60 and T43 can not support that since their chipset seem to have accessing issues over the magic 3GB, but we tried anyway)
We also tried the same thing on Dell XPS M1710 and M2010, and they could access almost the ENTIRE 4 GB installed even with 32-bit version of Windows Vista (BTW, 32-bit Vista can access 16 GB RAM with the right chipset so...). Of course, now you can guess that it was no problem with the 64-bit version of the OS:es we tried.
The Dell XPS M1710 and M2010 use exactly the same chipset found in T60 and Z60 series (Mobile Intel 945PM Express Chipset). In December 2006, we even opened a T60p (model 2007 8JG) and compared the chipset with the Dell XPS M1710, and well, I suppose that you have already guessed that it was the same chipset in both machines.
Honestly, I hoped that we would find the Mobile Intel 945 GM or GMS chipset in the T60 laptops (those chipsets seem to have this 3GB limit), since we had a BIG argue with the support guys at Lenovo, and they came with totally silly answers why the computers can not access over 3GB RAM. They even asked me what I need 4GB RAM for!! Can you imagine that?! You can ask ANY programmer/developer who works with virtual machines (both VPC and VMWare or even Parallels) and everyone will tell you that you can not have too much RAM!!! And it IS A BIG difference between 3GB and 4GB. However...
Now, we have heard rumors that HP NX94xx also can access 4GB RAM installed, but I can not confirm it myself, since I have not seen it myself.
And now, regarding to your post about mixing 2GB SO-DIMM with 1GB SO-DIMM, I would not recommend it. The 2GB SO-DIMM memory modules are pretty cheap now, and besides, you will lose a lot of speed mixing 2GB with 1GB memory modules. Just try different benchmarking programs and you will see. If you want to see quick results without a lot of installations, try Memtest86+
However, I think that it is very rotten that IBM/Lenovo does not care about their customers and lets a lot of incompetent technicians answer the phone. I have tried to come in contact with higher bosses and engineers, but they are simply unavailable. But it must be a way that we customers can make them hear us.. I only do not know how! :-/
And so, here ends my first (and long) post in here!
Message Edited by charlestek on 01-05-2008 07:59 PM

Hi
Supporting greater than 4GByte isn't easy. It could be a piece of hardware in the Lenovo/IBM laptops that are preventing greater than 3GByte which might be resolved by a driver update.
Some info here: http://www.microsoft.com/whdc/system/platform/server/PAE/PAEdrv.mspx
I agree Lenovo support hasn't been very good as they could have provided some information themselves or offered to look into it.
Regards
Phil
Note from Moderator: Converted to clickable link.
Message Edited by nonny on 01-06-2008 11:06 AM

Benefits of faster 1gb chip?

Similar Messages

Maybe you are looking for