It is still in beta phase, so please help testing. You will get a full refund if you are the first to test ClockTweak in one of the following environments and post a screenshot / copy of outputs "-a" and "-r". in this thread.
BTC address: 1B7Rh9fENB5aSDB5KYsbHM2Jv8nkjATU23
I use your program, unfortunately I can not change the voltage on any GPU. I have 2pcs Asus EAH5850 DirectCU TOP/2DIS/1GD5, Win7 64-bit