In case there are any who use the Gigabyte MA790X-UD4P mobo, I would seriously recommend sticking with the F2B bios. After reaching 4GHz with the F2B bios I thought that maybe the new F4 bios would make some even better improvements. Boy was I dead wrong. The F4(new released 4-21-09) bios really makes no changes..except I had to use an extra .100 to .125 volts to achieve the same overclock I got with the F2B bios. The temps were the first thing I noticed after changing bios. I was running at 22C idle at 3GHz and after the bios change was up to 33C idle at 3GHz. I thought maybe the bios was misleading in the temp info so I took a probe and checked it and it actually increased 10C at idle. As for the reasoning of needing more voltage to achieve the same overclock is another bug that I don't understand.
My system-
Gigabyte MA790X-UD4P rev 1.0 (F2B bios) AM2+
AMD Phenom II 940 @ 4.03 GHz
Sunbeam Core-Contact Freezer
Corsair 650TX power supply
Sapphire 4870 Radeon 1GB @ 825/1025
Cooler Master CM690 Case with 5 fans
Acer X233h 23" LCD
My system-
Gigabyte MA790X-UD4P rev 1.0 (F2B bios) AM2+
AMD Phenom II 940 @ 4.03 GHz
Sunbeam Core-Contact Freezer
Corsair 650TX power supply
Sapphire 4870 Radeon 1GB @ 825/1025
Cooler Master CM690 Case with 5 fans
Acer X233h 23" LCD
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