Mixed Ram problem?

[Cocytus]

With a DFI NF3 motherboard,
I have two sticks of 512 DDR 400 3200 2-2-2-5 OCZ Platinum Rev2 in the board.

I bought a stick of 1GB DDR 400 3200 2-3-2-5 OCZ Platinum (Rev 1 I guess).

I put in the 1Gb stick and get boot hangs, bios beeps and/or BSOD's followed by restarts. No overclocking here.

The stick seems to behave normally when it's alone.

Is there some Bios setting or slot configuration that I'm missing that will allow these sticks to cooperate?

 

[youph]

Everything I've read seems to indicate mixing RAM modules is a bad idea. I'm not sure of the technical reasons, but my guess would be timing concerns.

I'd suggest emailing OCZ first, explain the situation and see what they say. Maybe you can get a replacement module.

Also, try memtest86, see if you get any errors.

Finally, you could try to set your memory timings very conservatively, start with CAS3, and maybe even see if forcing DDR333 helps. But in the end these are just quick fixes, I would say you probably need to get all the same modules in your machine.

 

[Fern]

Originally posted by: Cocytus
With a DFI NF3 motherboard,
I have two sticks of 512 DDR 400 3200 2-2-2-5 OCZ Platinum Rev2 in the board.

I bought a stick of 1GB DDR 400 3200 2-3-2-5 OCZ Platinum (Rev 1 I guess).

I put in the 1Gb stick and get boot hangs, bios beeps and/or BSOD's followed by restarts. No overclocking here.

The stick seems to behave normally when it's alone.

Is there some Bios setting or slot configuration that I'm missing that will allow these sticks to cooperate?

The mem controller is on the cpu die, not the mobo. So proilly a good idea to list your cpu.

IIRC correctly, using three sticks is going to limit you to 333mhz instead of 400mhz. If you have manually set your ram in BIOS to 400mhz it may cause problems.

Likewise as regards the ram timings. Put it to "SPD" if not already.

Might wanna install all 3 sticks, then clear the CMOS and retry.

Fern