i dunt know....

i tried COOLVIVA before....

I trierd OCing My GC, after a few hours i get artifacts and a lot of em....

so

after that, my pc kept restarting each time it loads windows...

i took out the GC and reinstall back the original Heatsink.

and use a 2x 80mm FAn to blow at the heatsink.

Wala... My GC is back to normal.....

i prefer to use the 2x 80mm FAN than the CoolVIVA