I recently decided to upgrade my pc. And apperently I7 2600K is still a viable cpu for gaming if u oc it to around 4.2ish. As someone who never tried to OC before, i have some questions; is my cpu cooler, power supply etc. enough for OC?(Power supply Aerocool Strike X 800W 80+ Plus Silver 66A-12V Single Rail and CPU cooler Sunbeam Core-Contact Freezer) and second what should i consider to upgrade my current GPU to?( MSI Geforce GTX 560-Ti Hawk). I am guessing my current mobo MSI P67A-GD53 is not supporting gtx 9xx series. Thank you for any advice.