Upgrading RDRAM

[yevlesh]

I am currently using a Dell Dimension XPS B733R which uses RDRAM.
I have 128 MB of Samsung's ECC 700mhz memory installed (1 chip), but I wanted to upgrade and purchased another 128 MB of Samsung ECC 800mhz (couldn't find any 700 ones) to put in the second slot.
The problem is that when I installed it, the computer became noticably slower and started randomly freezing. Removing the new memory solved the problem. I checked and the memory chip itself is fine, it's not deffective. When I called Dell's support, they were clueless, they told me that it "should work" .

Any ideas?
I know RDRAM is not the best, but that's what my computer's motherboard uses.

 

[wfbberzerker]

i dont know if you should mix different types of rdram, that might cause the problems you are having. try purchasing a second 800mhz stick, and running 2 at 800mhz

 

[Rand]

Occasionally some sticks of RDRAM from different manufacturers can conflict with each other.... that's quite pssoibly what's happening in your case as otherwise it should work fine.

 

[MasterHoss]

No, RDRAM is the best but is just a lot more expensive (although it's come down a lot) than DDR SDRAM or SDRAM.

Anyway, try running your PC800 RDRAM in slot 1. Then move your old RDRAM to slot 2. I guess RDRAM works like SDRAM--that would mean that your RAM would run uniformly at it's slowest RIMM (but I believe the boards using RDRAM are frequency specific. I don't think your board was designed for PC800 ram.