and I play all games @ 950/1450 overclock. Voltage is at 1181
+1 for those clocks & voltages.That's really good.
Also, you could try the traditional way...
* Start to bump up Core & Memory clocks by low value, say (50 MHz) then you test your OC stability (play games and make load on GPU)
if no problems happen (crashes,freezes, BSODs) then you're fine and you can bump those a little bit higher.
Repeat it many times until you reach the limits of your OC (until you crash or you get BSOD)
Note 1: Check temperatures after each OC you do.
Note 2: Don't mess up with voltages as long as you're stable. IF you're unstable bump up voltages a little bit high.