help! Asus A8n-sli memory upgrade issue

dataro

Distinguished
Feb 1, 2007
1
0
18,510
I originally had 1 gig of corsair twinx ddr400 on my asus a8n-sli. Ive never had any problems with them and just wanted to add another pair. For some reason after I added another pair of the same 1 gig corsair twinx ddr400 the bios keeps stating that I have 2 gigs of ddr266. Anyone have any clue on this
 

mpjesse

Splendid
it's the famed AMD memory controller problem. whenever 4 DIMMs exist in a S939 board the timings are reduced to 333mhz or even 266mhz. there are 2 things you can do:

A. upgrade ur BIOS to 1009 release
B. go into BIOS and force DDR400 timings

I have the same exact board as you and both those solutions work.