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

[Oese]

with 04/15 its reading 1,440v in cpuz and 1,436v with dmm at 1,4v stock vcore btw.. so cpuz is indeed pretty accurate, but there are these certain discrete steps.. 1,44v, 1,456v and so on..

you can measure vcore at these points marked red...

[Rammsteiner]

Wicked, 2.8Ghz (didnt test HTT much yet) is the max for me too. I managed 2.9Ghz although it froze everytime after about 1h and 20m at the same test. Even at 1.45V it didnt help, either Phenom just doesnt go higher or we miss something/BIOS needs another update/whatever.

[justapost]

Wicked, 2.8Ghz (didnt test HTT much yet) is the max for me too. I managed 2.9Ghz although it froze everytime after about 1h and 20m at the same test. Even at 1.45V it didnt help, either Phenom just doesnt go higher or we miss something/BIOS needs another update/whatever.

2,9GHz work alot more stable here with nb at 2.2Ghz. Exspecialy if play with ref HT's. With 2.0GHz nb i run into stability trouble at ~205Mhz. I could sort out these harsh instabilities with 2.2GHz. For 2.9/2.2Ghz I need ~1.45/1.4V with temps in the 70°C and above area. I don't feel comfortable with those temps so I did not yet test with longer prime95 runs. That 2.9/2.2Ghz setup ran a three hour benchmark session stable however.
I can also run at 3.0/2.4Ghz at 1.525/1.5V with temps close to 80° after a few seconds of prime95. This is a non benchable setup.
That Xigmatec cooler i bought comes close to T120 Extreme and gives me ~5°C lower temps than the BigTyphoon 120 at ~60°C temps.
But for 3GHz I really need good watercooling for further testing.

[justapost]

with 04/15 its reading 1,440v in cpuz and 1,436v with dmm at 1,4v stock vcore btw.. so cpuz is indeed pretty accurate, but there are these certain discrete steps.. 1,44v, 1,456v and so on..

you can measure vcore at these points marked red...

Abit more inaccurate here.
Bios: 1.3125V
CPU-Z: 1.312V
DMM: 1.355V

Found points for NB voltage (green).

Bios: 1.14375V
DMM: 1.142-1.143V

Testing voltages with 4pin vs 8pin rail:

Bios: 1.3125/1.14375 (cpu/nb)

4pin/idle:
CPU-Z: 1.296V
DMM-CPU: 1.326V
DMM-NB: 1.139V

8pin/idle:
CPU-Z: 1.296V
DMM-CPU: 1.327V
DMM-NB: 1.138V

4pin/load:
CPU-Z: 1.312V
DMM-CPU: 1.353V
DMM-NB: 1.139V
P-Tuner 12V1(max): 13.5A/12.04V
P-Tuner 12V2(max): 0
DMM-12V1: 11.92V

8pin/load:
CPU-Z: 1.312V
DMM-CPU: 1.351V
DMM-NB: 1.139V
P-Tuner 12V1(max): 7.2A/12.09V
P-Tuner 12V2(max): 5.4A/12.09V
DMM-12V1: 12.04V
DMM-12V2: 12.05V

Using 8ping results in more accurate 12V1 P-Tuner readings.
Beside the 0.03-0.04V higher vcore (which is huge isn't it?) everything else seems to be in range.

[Oese]

Abit more inaccurate here.
Bios: 1.3125V
CPU-Z: 1.312V
DMM: 1.355V

Found points for NB voltage (green).

Bios: 1.14375V
DMM: 1.142-1.143V

Testing voltages with 4pin vs 8pin rail:

Bios: 1.3125/1.14375 (cpu/nb)

4pin/idle:
CPU-Z: 1.296V
DMM-CPU: 1.326V
DMM-NB: 1.139V

8pin/idle:
CPU-Z: 1.296V
DMM-CPU: 1.327V
DMM-NB: 1.138V

4pin/load:
CPU-Z: 1.312V
DMM-CPU: 1.353V
DMM-NB: 1.139V
P-Tuner 12V1(max): 13.5A/12.04V
P-Tuner 12V2(max): 0
DMM-12V1: 11.92V

8pin/load:
CPU-Z: 1.312V
DMM-CPU: 1.351V
DMM-NB: 1.139V
P-Tuner 12V1(max): 7.2A/12.09V
P-Tuner 12V2(max): 5.4A/12.09V
DMM-12V1: 12.04V
DMM-12V2: 12.05V

Using 8ping results in more accurate 12V1 P-Tuner readings.
Beside the 0.03-0.04V higher vcore (which is huge isn't it?) everything else seems to be in range.

nice findings.. I think that overvolting is pretty huge as well..