Mixing RAM - could do with a little help...

[Barno]

Hi,

I just added 2x512mb of Corsair CMX512-3200LL DDR RAM to the 2x512mb of PDP Systems Patriot PC3200 XBLK RAM I already had. They are both 3200 (DDR 400) and run similar timings and voltages. My mobo is a DFI Lanparty Ultra-D and it picks up the new sticks, which is a relief, however the boot screen now shows the RAM running at DDR 333 or 2700. I know my old PDP RAM ran at DDR 400 and unless Corsair have wrongly labeled these new sticks then it should as well.

Can anyone explain why this is happening? Is there anything in the BIOS that may need to be tweaked?

Cheers.

 

[hp7909]

Some (early) A64s & socket 939 mobos could not run @ 200MHz (DDR400) with all 4 RAM slots filled up

EDIT: See here (scroll down to Q. Should I buy 2x1Gb or 4x512Mb?)

 

[Barno]

Thanks for pointing that out mate, bummer

This is quite worrying too: http://www.xbitlabs.com/articles/cpu/display/athlon64-e3-mem_4.html

I bought the extra RAM to help smooth things out in games as I was getting a bit of stuttering on this old system (AMD 3200+, 6800GT) - will the extra gig help at all or, as the benchmarks suggest, will it actually hinder performance?