Perhaps slightly off topic, but just wanted to check if anyone's come across this...
P.S. Waffle, you rock.

If your intensity is high you will see a drop doing anything, If you want to use it while mining drop the intensity.
Or you can use the integrated graphics. I use my work computer that way with 2 amd cards mining on I18 and my system is still snappy. I put a dummy plug to one of the AMD cards because you can't control the cards without it (only stock clocks and fan speed). On win8 it is more of an issue. Win8 won't load the driver if you don't have a monitor (or dummy plug) plugged in.
or u can use an amd based system , and it loads all its drivers w/o dummyplug + u can even use the IGP for mining , not like thats really worth it
