Is this the wrong Memory??

ddelle338 · Mar 6, 2010

I just bought (on eBay) 1G of RAM to try to upgrade my PC. It is 256MB/16 ECC PC800-45. The seller had this listed for a Dell Dimension 8200 8100 as well as a bunch of other models using 400mhz FSB, including my Dell Precision Workstation 340 (400mhz FSB).
When I started the computer it halted with a message stating "Unsupported Memory, replace with RDRAM PC800-40ns or faster.
The memory that is in my PC is 256MB/8 ECC PC800-40, did I get the wrong type? Is it the 45 vs. 40 ns that made the difference.

Thanks

DavidGP · Mar 6, 2010

Hi

In case of RDRAM then yes, it needs to be exactly the same type and density and matching pairs to work.

How many modules did you buy was it 2 matching pairs and if so whats the full codes on the side of the memory module include make (eg Samsung etc)?

So in your PC you have 2 x 256MB/8 ECC PC800-40 to make up 512mb of ram?

How did you install them in what setup, as you "could" possibly be able to mix them but they may need to be installed in a specific order. The matched pairs need to be say the 40ns in RIMM 1 and 2 and the 45ns in RIMM 3 and 4.

RDRAM is fussy as hell stuff, know this from experience as I still have a RDRAM based PC lying around.

ddelle338 · Mar 6, 2010

I bought 4 sticks of Toshiba THMR1E16E-8 256MB/16 ECC PC800-45. Then in small print 669931/0129UKC G100 S110.
It didn't say they were "matched pairs" but, they came packaged two per anti-static bag. I installed one pair in each of the 2 banks.
I took out my two sticks of 256 to install the 4 new ones.
After the error message, I removed the two I put in the 1st bank (RIMM1&2) and reinstalled my original in there. Then I got another halt that said I had unsuported memory in rimm 3&4.

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Is this the wrong Memory??

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