F2-6400CL5S-2GBPQ bios settings

[c3k]

Hi,

I have 4 sticks of F2-6400CL5S-2GBPQ DDR2 memory, for a total of 8Gb of RAM in an Abit IP-35 Pro mobo.

I have intermittent instability, due to, I think, some of the mobo's AUTO settings in respect to the memory.

The RAM is a CL5-5-5-15 (1.8-1.9v).

The mobo uses a Phoenix Award Bios. The selectable DRAM timings are as follows:

CAS latency;5
RAS to CAS delay; 5
RAS precharge delay; 5
active to precharge delay (shown as Precharge Delay (tRAS)); 15
refresh cycle time; AUTO
write recovery time; AUTO
write to read delay; AUTO
RAS to RAS delay (shown as Act to Act Time (tRRD)); AUTO
precharge command delay (shown as Read to Precharge (tRTP));AUTO
and command rate.2

If I want MORE stability (at the cost of a little speed), how should I change the 5-5-5-15/2T settings? What should I make the AUTO settings read if I want to hard-set them?

Thanks!

Ken

[Tradesman]

Try with the DRAM set to 1.9-1.95 and raise the NB voltage a bit, maybe + .04 or so, the NB voltage increase should help the MC (memory controller) better handle 4 sticks

[c3k]

Tman,

Thanks... I have done exactly that already, a long time ago. No help. Do you think voltage beyond 1.95v would be okay? What about those "auto" settings?

Thanks,

Ken

[Tradesman]

Up to 2.0 or slightly higher should be okay, and check that you have the latest BIOS. If the higher DRAM and/or NB voltage doesn't help, if you can post your BIOS settings

[GSKILL TECH]

refresh cycle time; 24
write recovery time; 6
write to read delay; 4
RAS to RAS delay (shown as Act to Act Time (tRRD)); 3
precharge command delay (shown as Read to Precharge (tRTP));4

Thank you
GSKILL TECH