View Full Version : RDRAM -- Can You Mix and Match?
03-21-2001, 08:25 PM
I was wondering if anyone knows about RDRAM. I currently have a Dell Dimension 8100 with 128MB RDRAM NON-ECC PC 600 MHz. I want to buy another 128 MB stick. Do I have to get PC 600 or can I get PC 800? Do I have to get NON-ECC ? What are the rules when mixing and matching RDRAM?
Thanks for your help !
03-23-2001, 02:58 PM
Short answer, you probably cannot mix and match.
I have an Intel 850 (Colusa) Motherboard, and it requires that the speed match in both bank0 and bank1 (although the size can differ). The documentation does not state any requirement about ECC vs non-ECC, but I know from other people with the same motherboard that you cannot mix those either.
I'm pretty sure that Dell does not use the Intel motherboard, but I wouldn't be surprised to find the same requirements. You need a serial number to get any useful info from the Dell web page, so I can't check it out.
For reference, the i850 MB rimm requirements can be found at: http://developer.intel.com/support/motherboards/desktop/d850gb/tti001.htm
Also note that since adding rims farther from the chipset will increase latency of the closer RDRAM as well, (ok, just a LITTLE bit), you might want to consider upgrading to a larger RIMM of PC800 for bank0.
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