**Unified** DFI LanParty UT 790FX-M2R-M2RS / Phenom /Data Base Thread**

[justapost]

Lowest voltages for 2.8Ghz/2.0Ghz
CPU-VID: 1,3125V (Bios) 1,351V (DMM)
NB-VID: 1,15V (Bios) 1,144V (DMM)
CPU-TEMP: 63°C coredamage, 60°C max prime95
Prime Time: 22hrs

Lowest voltages for 2.8Ghz/2.2Ghz
CPU-VID: 1,3125V (Bios) 1,354V (DMM)
NB-VID: 1,25V (Bios) ? (DMM)
CPU-TEMP: 63°-64°C coredamage, 62°C max prime95
Prime Time: 12hrs

I use the following procedure for stability testing.

1. Sandra Memory Latency (that triggers a freeze here very quickly)
2. CoreDamage for a few minutes to see what temps i will get
3. Prime95 together with 3dmark06, to generate a very high power consumption
4. Prime95 longtest
5. Application testing (Surfing, Openoffice, Antivir) for a while.

Lowest voltages for 2.8Ghz/2.4Ghz

1.3125V: passed 1, power off at coredamage
1.325V: passed 1, power off at coredamage
1.35V: passed 1 and 2, failed prime95 immediate
1.3625V: passed 1 and 2, failed prime95 after 3mins
1.3875V: passed 1 and 2,3 power off during prime run after ~30mins.
1.4V: passed 1 and 2,3 failed prime95 after 48mins
1.4125V: passed 1 and 2,3 failed prime95 after 4:50hrs
1.425V: passed 1 and 2,3 failed prime95 after 5:30hrs

Trying with 1.35V CPU-VID

1.35V: prime failed immediate
1.375V: prime failed immediate

Back to 1.3125V CPU-VID

1.4325V: passed 1 and 2,3 failed prime95 after ~9hrs

With this high NB voltage I get temps up to 66°C (cpu). All those latest tests failed on the second core. This core is not a weak one, on the M3A I could run 3GHz on that core with ~1.35V. If I use too low CPU-VID prime95 normaly fails on the weaker cores 3 and 4. I suspect core 2 does not like high temperatures.

Trying with 1.325V CPU-VID

1.4325V: passed 1 and 2,3 failed prime95 after ~13hrs