Can't decide on which power supply to choose from?

Trytiped

Honorable
Jan 25, 2014
14
0
10,510
Having a difficult time deciding on which power supply to choose from.
Evga superNOVA NEX750w gold certified. www.amazon.com/gp/aw/d/B009YC3EAI?cache=d8688d951e35372b5d9792cfd05384f0&pi=AC_SX110_SY165_QL70#ref=mp_s_a_1_2&qid=1391534577&sr=8-2

Corsair CX750w gold certified.
www.amazon.com/gp/aw/d/B009YC3EAI?cache=d8688d951e35372b5d9792cfd05384f0&pi=AC_SX110_SY165_QL70#ref=mp_s_a_1_2&qid=1391534577&sr=8-2

My build is a sabertooth 990fx with a fx-8320 over locked to 4.0 ghz and a gtx nvidia 780. Also any information if this is overkill or not would be awesome too! Thx everyone ^^