CPU and GPU OC

The wattage doesn't mean much when the CX most likely can't even reach that output. It's a very poor choice in PSU, even for a stock clocked gaming rig. It's built by Channel Well using every cost cutting shortcut available including substandard capacitors. Poor regulation and ripple suppression can cripple overclocking as well as lower the lifespan of graphics cards and motherboards.

http://www.overclock.net/t/1431436/why-you-should-not-buy-a-corsair-cx

http://hardocp.com/article/2015/01/21/corsair_cx750_750w_power_supply_review/9#.VM2NQ2ggul9