[RESOLVED] Memory Timing Settings in BIOS

[K G G]

Hi All,

I have Corsair XMS2 TWIN2X1024-6400C4 4x512GB dual channel DDR2 800 memory in my system and set the timing manual to the manufacturers specs of 4-4-4-12.
(SPD would only allow JEDEC settings of 5-5-5-18).

Now, my MOBO Epox EP-MF4Ultra3 has about 12 additional memory settings available, that I am not sure what to do about. Instructions and online sources have not gotten me anywhere.

Everything works fine and I could leave the remainder settings on AUTO, but I am wondering if I can achieve more gain from adjusting these other settings as well.

Any resources you could point me to, settings I can ignore, settings I should look at ?
E.g. tRC shows in CPU-Id as 23 - which seems high given the other values.

Thanks in advance.
KGG

[lgbpop]

If you have Everest or similar system monitor, check the timings thoroughly. They're usually listed as being at a certain FSB, if yours is faster/overclocked the timings may not be applicable.

Before trying faster timing, try setting the T2 setting to T1. In my minimal experience this speeds things up more than changing the timing as such.

[K G G]

Thanks.
What value is "try setting the T2 setting to T1" ?
KGG

[lgbpop]

Sorry about that - try Command Rate under Memory or DRAM (however your Epox lists it in the BIOS).

[K G G]

Thanks,

Tried the memory timing from T2 to T1 and system would either stop booting at the memory area or not start W2K with a NTOSKRNL file error (spelling?).
With T2 it works fine.

Also learned that tRC = tRAS + tRP

Haven't run much benchmarks, but perception says there is a small positive effect from the manual vs JEDEC (SPD) settings.

Cheers
KGG

[lgbpop]

Leave it at T2, then. If settings changes make your system unstable, your RAM can't handle too much tweaking.