I have 2x 256 RDRAM pc1066 in my Dell Demented and I was wondering if I can upgrade with 2 sticks of RDRAM pc800.

Or do I infact have to have all 4 slots filled with the same stick?

All info I have found tells me they must RUN in pairs so its either 4x PC800 or 4x PC1066 or I hope 2/2 of both PC800/1066.

Visit www.crucial.com and use their memory configurator to see what memory options you have for your computer.I don't think crucial does RDRAM anymore. I would check the Dell forums for a better idea.

www.support.dell.comOddly enough dell "Technicians" couldn't answer my question without a program for them to plug scenarios into.

I was told "probably" only 1066 across the board. But my board does support pc800 aswell as pc1066.

Since the only stipulation with RDRAM is pairing it makes since to me that 2 chips of pc800 on the other set would not conflict. It is after all paired and within the boards parameters.

RDRAM is so hard to find and when ya do its crazy high priced. Just hoping to pick up some pc800 cards till I can justify to the wife about me buying a new Mboard with all the extras.qore...... Well you can certainly mix the size of the RD sticks as long as they are in matched sets ...... Rimm1 & Rimm2 ( matched pair) and Rimm3 and Rimm4 (a matched pair) they pair can be of diferant sizes .... 1&2 could be 128 mg each and 3&4 could be 256 mg each ......
http://www.4allmemory.com/content/guides/Dell_Dimension_8100_8200.pdf

Whats the tag number on your pc ?
Dell SELL pc1600 RD RAM.....
Tiger Direct sell pc800 RD ram


dl65 Why not see what you can find on ebay: 712 items found for RDRAM in Memory for Desktop PC