Thanks for this. Both my Toxic and Vapor-X is now running above the 810kh/s mark.

Awsome.

vapor-x too? :O

Yep. cgminer 2.11.2 - 1155/1800/Powertune:20/1.2v

3gpus running steady at 815kh/s. Cool

What about invalid shares? My Toxic mines with 820 kh/s (cgminer 2.11.2) but invalid shares are 30%.

My toxic show 1024 rejected out of 424651. Mining UFO. That`s not bad.
But for the tocix i`m running cgminer 3.4.2. 1130/1850/i13