overlocking and memory

[mgutz]

I've been slowly upping the overvoltage on memory. At some point, the memory starts failing in MemTest within the first few minutes. i'm at 2.2V now and is about as far i want to push it. Will adjusting the other overvoltage parameters like mch, fsb, pci-e help memory? i upped the v-core and it didn't help. Which one should I adjust first? I'm guessing one of them has more impact than others. The memory is rated DDR-2 800 (OCZ Platinum) and I'm barely able get past 820. Not what I expected from an 'enthusiast' brand. What about the memory timings? Which one of the numbers has the most effect on stabilizing memory, by numbers I mean 4-5-4-15. I set it according to OCZ' recommendation.

Gigabyte GA-965P-DS3 rev 3.3 F10
Corsair HX520 PSU

my roommate got a real good deal on 2x1GB OCZ DDR2-800 Platinum, $160 at Fry's a couple weeks back. he has the upgrade bug, so i'm trying his memory in my DS3 board before he orders it.

fyi, my corsair xms2 ddr2-800 5-5-5-12 are better for overclocking on this board and use less voltage. i only had to set DDR2 to +0.1V to go up to 3.2Ghz. i didn't even try to pushing it. i'm stuck around 2.9 GHz with the OCZ which are rated DDR2-800 4-5-4-15.

 

[Cheex]

ADVICE:
1) Set the timings of the memory manually to 5-5-5-15.
2) Set the vdimm (memory voltage) back to its stock value.
3) Slowly increase the FSB and do your stability tests.
4) When you fail a test or find that you are unstable, raise the voltage by the smallest possible amount (usually 0.1V).
5) Leave FSB where it is and test again.
6) Rinse and repeat.


NOTES:
1) No other voltage setting affects memory, only vdimm.
2) The lower the timings (or numbers as you said), the tighter they are said to be.
3) The higher numbers are called looser timings. These generally allow you to overclock your memory further.
4) I personally wouldn't recommend that you push more than 2.2V through your memory.


Hope that helped......:beer: