MSI afterburner, increase voltage slowly and monitor temp under load, < 85 degree
Wow, literally the most minimal and useless answer possible. Raising voltage is NOT where anybody should be starting on a GPU overclock. Increase clock speeds first and then add voltage for stability, in the most basic terms.
+ 1 to Rogue leader, always forget I can try to increase clock speed first, then voltage
Its not "can try", Overclocking a GPU requires increasing the CLOCK speed first.
Please try to think of such information before posting something that could be potentially dangerous advice. Hopefully the OP didn't just start cranking the voltage up on his GPU in the futile effort to make it go faster, and instead just burning it up.