RDRAM questions

[HerbertKornfeld]

I ordered 2 x 64MB RDRAM moduels from memman.com and ended up getting 2 x 128 ECC modules made by Elpida. I currently have 2 x 64MB 600mhz non-ECC modules installed and 2 additional RDRAM slots available.

• Should I run the 64MB modules and 128MB modules together; do all of the sticks need to be the same MB size?

• The 128MB modules are 800mhz while the 64MB are 600mhz, is that an issue?

• Is it an issue running non-ECC and ECC RDRAM together?

Sorry for the nÖÖbish questions. I know i can just pop them in and give it a try but wanted some answers from the experts to see how RDRAM really works. :t

http://www.mechgrinder.com/images/hwbanner.jpg

[Ammok]

First off, you will get some good advice in a mo, but really you want to check you motherboard manual which will tell you exactly what memory type is supported,.

I think you done the right thing in holding off as I would not run ECC memory with non-ecc memory.

[leprechaun_40]

I don't know about running ECC and non ECC together, it may or may not cause trouble, but as far as the different sizes, RDRAM goes like this. You can run 2 sticks together but they have to be the same size ( recommened the same manufacturer even ) and the other 2 have to be the same as each other, but they don't have to match the first 2, they can be different from them. RDRAM has to be run in pairs(2 sticks make a bank) though because it takes a pair to make a bank. Hope I didn't confuse you:D

[Terminator]

I doubt very much you will be able to run ECC and NO-ECC together. As for the speeds I'd expect you to only be able to run at 600MHz if they worked but I pretty sure they won't.
I'd stick to the 128MB 800MHz chips only.

T

:t

[HerbertKornfeld]

Got it Lep ;)

Thanks all! I am going to yank the 64MB sticks and install the 128's only. It looks like it is not a problem running ECC RDRAM on a motherboard that does not support ECC, from what I could find poking around the internet. :t