It's the DFI. A guy @ a german forum gets exactly the same OC on his DFI with a 9600BE (12,5x200 not really stable; 13x200 windows boot crash). He will test the same CPU with the GB, to be sure if it's the CPU or mobo.
We're at the moment the only one there who have a DFI+9600BE. But other ones reach 2,7-2,8GHz on other boards.
The scenario with the DFI ist strange:
11,5x200@1,25V (stock) - ok
12,0x200@1,25V - ok
12,5x200@1,25V - not 100% stable
12,5x200@1,35V - not 100% stable
12,5x200@1,45V - not 100% stable
13,0x200@1,5V - no boot
with nb-multi @ 7x
11,5x200@1,25V (stock) - ok
11,5x220@1,25V (stock) - ok
11,5x225@1,25V (stock) - not 100% stable
11,5x225@1,35V - not 100% stable
11,5x225@1,45V - not 100% stable
11,5x230@1,5V - no boot
both scenarios end @ ~ 2,5xGHz and gain no profit with added voltage
There must be something that limits there.
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