Calculating the key OC points on the 7800

[HeavyH20]

For those interested, here is the BIOS I am using. It is a generic BIOS, so it will work with all the reference 7800 GTX cards. XFX, eVGA, BFG, etc.

3 performance levels
500 core plus 50 MHz delta
1350 memory speed
tighter memory timings (does not affect OC capacity)
Throttle at whole 27 MHz multiples (432 root plus 40 MHz delta)

That's about it. This BIOS gets me around 200+ or so on 3Dmark05 versus the stock BIOS.