help ocing (passes but fails orthos) - Overclock.net

noobdown · 01-10-08

just ran orthos for 4 hours at2.8@1.4(2.5stock 1.35v) small fft test and passed no problem so i stopped it and changed it to the blend test and about the 6 minutes core 0 failed
temps are fine cpu load was 46c and mb was 42c under load
ram was at 940 mhz @2.2

any suggestion on how to stabilize it at 2.8?

vwgti · 01-10-08

Either drop a divider on your ram, or loosen up your timings. It sounds like your memory controller is being stressed to much.

GigaByte · 01-10-08

If you are certian the RAM is not the cause increase the northbridge/FSB volts 1 notch and test again.

noobdown · 01-10-08

the ram is at the deafult voltage for its epp setting and less are ruffly 2 weeks old

what would you suggest more losten the timings of droping the divider?
or which would you do frist?

4/4/4/12 are the timmings

vwgti · 01-10-08

Quote:

Originally Posted by noobdown

the ram is at the deafult voltage for its epp setting and less are ruffly 2 weeks old

what would you suggest more losten the timings of droping the divider?
or which would you do frist?

4/4/4/12 are the timmings

Id start with voltages, cpu vcore for one since one core fails. It sounds to me again the on chi mem controller is failing. So try a notch or two on vcore, and also bump the nb, for although I think thta wont help (the increase in nb that is). Also whats youre htt link multi at?

noobdown · 01-10-08

Quote:

Originally Posted by vwgti

Id start with voltages, cpu vcore for one since one core fails. It sounds to me again the on chi mem controller is failing. So try a notch or two on vcore, and also bump the nb, for although I think thta wont help (the increase in nb that is). Also whats youre htt link multi at?

4x235=940

just courious why would it fail in the blend test but not the smallftt test?

vwgti · 01-10-08

So ht link is not a problem, go ahead and adjust voltages, for all though I believe a drop in divider may help. Hard saying not tweaking what you have. Its either one or the other, as previously stated by me it sound like the mem controller is being stressed with the cpu and ram overclock..

**The Duke** · 01-10-08

The blend stresses both the CPU and RAM, so apparently your RAM needs some attention.

Questions...
Have you tried increasing the vdimm and retest?
Are you running a T2 Command?
What is the Trc, Trfc and Async set at?

For some a 2T seems to be far friendlier when OC compared to a 1T for some AM2 systems.

noobdown · 01-10-08

Quote:

Originally Posted by The Duke

The blend stresses both the CPU and RAM, so apparently your RAM needs some attention.

Questions...
Have you tried increasing the vdimm and retest?
Are you running a T2 Command?
What is the Trc, Trfc and Async set at?

For some a 2T seems to be far friendlier when OC compared to a 1T for some AM2 systems.

vdimm no i have not
t2 command is what im using
manually set to 4/4/4/12 every thing else at auto

i put the vcore at 1.4 and cpu at 240 droped the ram to 667 ranning at 740

**thlnk3r** · 01-10-08

Quote:

Originally Posted by noobdown

i put the vcore at 1.4 and cpu at 240 droped the ram to 667 ranning at 740

Noob, good idea. How is it running now? Before you had your memory 70mhz overclocked, no wonder it was failing on stock vdimm. I wouldn't worry so much on memory frequency. CPU speed is the king when it comes to AMD processors. I would adjust your memory timings accordantly and see how low you can get them. Use memtest when doing this. I'd advice not to test memory stability in windows because of the threat of data corruption. Did you test your memory at 470mhz(DDR2 940) in memtest? Make sure to run tests 5 and 8 each for a couple of hours.

Good luck

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help ocing (passes but fails orthos)

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