**Official DFI LanParty UT 790FX-M2R Review/Overclock/Guide Thread**

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Attention:....."New" D.F.I LanParty UT 790FX-M2R / Phenom 4/15/2008 "Bios Template" Click Attachment Link Below!
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Bro, i tried your settings here. I found that my third core is the weakest few days ago on the M3A. Prime95 failed after a few seconds on that core.
So I upped CPU vcore to 1.27V, tried prime95 for a few minutes, closed it and started Sandra. The system froze during startup.
Upped vcore to 1.3125V and now Sandra works, including the Memory Latency Test.
But nevermind, thanks for sharing.

EDIT: Ran into prime problems at 1.3125 so i upped ram to 2.0V now sandra does not freeze my machine at 1.275V vcore.
I normaly used 5-5-5-16-18 75ns. So the cpu definately benefits from 5-5-5-18-23 195ns timings vcore wise.

I upped the NB VID a notch (2.2GHz) and set NB Voltage to 1.275V. Passed the sandra latency test here but failed prime95 on the third core after a few minutes. Now I'm puzzled.

Previously I ran 2.8GHz(cpu)/2.2GHz(nb)/533MHz(mem) at 1.3125(vcore)/1.275V(vcorenb)/2V(mem) stable for days. There must be an interference between the NB speed and the cpu or mem voltage.

Went back to previous settings and they also failed prime95 after few minutes. Upped NB Voltage to 1.3V and prime95 did not fail (20min atm).

First time I run a phenom with a higher nb voltage tha cpu voltage.

UPDATE:

Few hours later it turned out that the memory tweaking has no impact on stability.

1.27V failed after 1:30hrs
1.2875V failed after 2:00 hrs
1.3V is what i'm testing (it had failed last week after a few hours).

I had a similar situation with the 9500 while i was looking for the lowest NB voltage.

It was stable for a short amount of time with settings like this:

CPU 1.25V NB 1.25V
CPU 1.2625V NB 1.1V

But finaly fully stable at CPU 1.2626V NB 1.2V.

UPDATE
1.3V failed after 1hr
1.3125V stable for 9hrs

I keep vcore fixed now and will go lower with NB voltage (was 1.3V before). I ran CoreDamage for a while and i'm at ~62°C cpu temp now, 1-2°C higher that my results during bios comparison at stock.

1.2875V prime95 stable for 1hr
1.25V passed sandra and 1min() prime95
1.2V passed sandra and 10min prime95+3dmark06
1.1V passed sandra but failed prime95 immediate
1.15V passed 10min prime95+3dmark06, passed 10min PassmarkBurnIn, passed prime95 for two hours with an additional 3dmark06 run also passed sandra latency
1.125 failed prime95 after 2mins
1.1375V failed prime95 after 8mins during parallel 3dmark06 run
1.14375V prime95 stable for 3hrs

One lower setting to test
1.30625V(CPU)/1.14375V(NB) passed sandra and 10min prime95+3dmark06 ... failed after 6hrs

1.3125V/1.14375V failed prim95 after 90mins
1.3125V/1.15V prime95 stable for 4:15hrs at ~60°C cpu temp, then i lowered the fan speeds till the cpu temp was around 70°, prime95 failed after a few minutes.

1.3125V/1.15V prime95 stable for 22:30hrs with cpu-temp ~60°C max and 23°-24°C ambient