I'm back on YAC again. Mining with a 7970 - HIS Turbo iceQ X2 3 GB. I'm getting 259. Once trick if you want to squeeze your CPU as well. If I set the affinity of cgminer (with priority high) to one core and the affinity of the other cores to the cpu miner - I can continue to pull 259 off of the GPU as well as pull hash off of the CPU. With litecoin - I can't do this. My card runs cooler on YAC as well.
Glad I'm not the only one doing this. I found I can run 6 threads on my 8350 which nets about 40 kh and I can run 3 on my athlon II x3 > unlocked to x4 @ 18-19 kh both with stock cooling, slight overclock.