|It start with, the 6400+ is virtually maxed out at 3.2GHz as it is, plus it's a high wattage/power hungry CPU - 125W, I think? You may be able to get a little more out of it but don't expect miracles. Even if you're able to squeeze out another 200MHz, you won't notice the performance difference.|
You would have been better off with a 5400+ Black Edition which runs at 2.8GHz at 65W. With the unlocked multiplier, all you need to do is raise it from 14x to 16x & you'd be running at 3.2GHz, same as the 6400+.
- Turn Off AI Overclocking...set it to manual.
- Lock the PCI-e at 100MHz.
- Disable Cool 'n' Quiet.
- Overclock by raising the CPU frequency a little at a time.
And being that your CPU is close to being maxed out at it's stock speed, it does make sense to increase the voltage. But if 1.45v is as high as it can go, there's not much you can do about it unless you wanna wire mod the CPU socket.