not cool. my GPU core clock got stuck at 914MHz and didn't want to boost at all under load (50% TDP max). re-installed both nvidia driver (304.79 beta) and precision X (it lost the GPU temp sensor), now all back to normal.
however now as everything clocks normal I see some EXTREME POWER THROTTLING under load (when OCed). in deed the TDP stays at max 122.7% (near ideal), but I loose lots of MHz for that!!!!
here is a short run of Scanner X at my GPU OC, look how deeply it power throttles under load (dropping from 1242MHz core down to 1138MHz!!!! over 100MHz drop!!!!)

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ImageShack.us no, I no longer am fond of it. what's the point in OC'ing it if the GPU core drops the speed to its own liking (based on power draw).