Calculating the key OC points on the 7800

[HeavyH20]

Ok, we will use your example. 621 is the limit with a no delta BIOS. With a 40 Mhz delta BIOS, the card will run at 661 and 621 on the ROP/Shader. Now here is the reason why the no delta is a tad slower. Let's say the top clock is 608. That is 648 vertex, and the ROP/Shader clocks are at 621 still. You will get better performance with the delta BIOS at 608 than the no delta BIOS at 621.

As for the memory, I am starting to play around with the timings a tad. Similar to running your memory at 2.5-3-3-7 at 270 FSB versus 2-2-2-5 at 200 FSB. It is a balance between latency and bandwidth. All the tests I ran were with default memory timings and 1350 MHz.

Next testing period, memory scaling with different timings.