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New Member
Dec 20, 2009
Many thanks to those that have helped so far. Here is the thread from Water Cooling that is solved (as far as temp goes) but there are other issues and I don't want to waste the WC thread.

Please read this link to get a better understanding:

I ran Prime95 so far for 4-5 hours stable. Do I need to roll back the BIOS to maybe the F6 version?

Here is the link to my mobo on Gigabyte: http://www.gigabyte.us/Support/Motherboard/BIOS_Model.aspx?ProductID=3143

I had BIOS F2 but flashed it to F7. Should I have just flashed it to F6?


New Member
Dec 20, 2009
Thanks for the reply EarthDog,

My reasoning behind BIOS flashback is that in version F2, which the board came with, recognized and allowed the unlocking of the four cores. After reading about the other BIOS updates from Gigabyte, I noticed that F6 had a CPUID update. I flashed F6 and even after using the same settings in MIT as I did in F2, CPUID, SpeedFan, Sandra, etc...will not recognize the four cores. It is now recognized as the PII x4 B50 but, as I mentioned, only as a dual core. So right now I am flashing back starting with F6 and am trying to get the four cores unlocked again. If I have to revert all the way back to the original F2, I will.

Although the high clock settings as a dual core, CPUID validation: http://valid.canardpc.com/show_oc.php?id=912696

I have had a successful 4-5 hour run with Prime95. The 3.926mhz (had it at 3.997) seems awfully high for a dual core though. The temps are not breaking 50c, which makes me happy.

Here are my BIOS settings. Please tell me if there are things that need adjusting. I really don't want to burn it up.

CPU **** Ratio: 19.5
CPU Northbridge Freq: Auto
CPU Freq: Manual @200
HT Link Width: Auto
HT Link Freq: Auto
Memory Clock: x5.33/1066
System Voltage Control: Manual
DDR2 Volt Control: +0.100 @1.9v
NB Volt Control: +0.100 @1.2v
SB Volt Control: +0.100 @1.3v
CPU NB VID: +0.025 @1.175v
CPU Volt Control: +0.100 @1.45v

ACC is Hybrid (Shows Four Cores)
acc is auto: Should I have this to reflect ALL CORES +12% ??

I must admit, as if you couldn't tell, that I am new when it comes to OC'ing. The last thing I had oc'd was, and still is being used, an Athlon64 3200+ at 2.5ghz using cheapo ram and a Thermal Take Big Typhoon, so any help will be greatly appreciated.

UPDATE: Flashing back to F2 didn't help
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