Recently purchased the r9 290 and keen to get a bit more performance out of it even tho it has been amazing so far (upgraded from a 5850) and was a little confused by the new overclocking interface. Looked up some videos and got a general idea but was curious if my PSU would be able to support the +50 power limit and if it would void the warranty if i moved the power limit to +50. My psu is VS650 which pushes 50 amps on the +12V rail. Thanks in advance!