DX58SO not stable on triple channel

[oneallen]

Hi All,

I need your help with this after several hours of testing.

My rig is:

i7 920
DX58SO bios 4598
CORSAIR CMX6GX3M3A1600C9 DDR3 1600Mhz 2x3G
Sapphire 5770 1GB

everything are with default setting. CPU runs at 2.66, RAM at 1066Mhz 8-8-8-20, all voltage unchanged. I tested with three rams in triple channel and memtest86 reported errors in each pass. It is weird because i can run memtest for 2 hours w/o errors if I use only one or two rams at a time. I tested each of these blue slot with one ram installed and it works fine so i guess none of these slots is faulty.

Is it the ram or motherboard that caused this problem?

Can anybody help? Thanks in advance.

 

[o1die]

I don't use memtest unless I get windows bluescreens. I recommend you check the default ram voltage and adjust it to your specs; ddr3 is supposed to run at 1.5-1.65 volts at 1066-1300; 1600 ram may require more voltage. If you're unhappy with your memtest results, you have to decide if it's worth the hassle of an rma or try it out for awhile with your software.

 

[vvhocare5]

+1 for adding voltage to the RAM. Take it to at least 1.5. Its not the motherboard, its the RAM

 

[oneallen]

thanks for this advice. i tried to run it 1066 8-8-8-20@1.54V, and also 1600 9-9-9-24@1.66V according to its specs. it just could not work with three rams.

and i also use prime95 to test stability and found that using 2 rams are way more stable than 3. is this kinda weird?

 

[o1die]

Yes. A bios flash may fix it, but check with Intel first and use the "pause" key to stop at the post and write down your current bios version. No point in risking a dead board from an un-necessary bios flash. It may also be cheaper to buy another single ram stick and run with 4 sticks in dual channel mode. Dual versus tripple channel is moot as far as speed goes.

 

[oneallen]

Yes. A bios flash may fix it, but check with Intel first and use the "pause" key to stop at the post and write down your current bios version. No point in risking a dead board from an un-necessary bios flash. It may also be cheaper to buy another single ram stick and run with 4 sticks in dual channel mode. Dual versus tripple channel is moot as far as speed goes.

i just did a bios reflash and no help at all. buying another ram is a way to go. thanks o1die