Also, the BIOS tends to be very limited. You can probably bump it to run it's max 1-core turbo speed by default (disable turbo boost though) without touching voltage, but beyond that it's tricky if you don't have that control.
Never, ever touch the base clock (BCLK). Ever.
Actually, what options does it have for overclocking? Pretty sure it doesn't have a (fully) unlocked multiplier. Don't even know how it works on locked CPUs.
