The nice performance and features of this PSU earns it a 90% rating from TT.
"Corsair recently refreshed their TX series of power supplies and asked us to take a look at both the TX850V2 and TX750V2. We recently gave an in depth look at the TX850V2. Since the TX750V2 is nearly identical to the TX850V2, we will be using the quick review format to take a look at the TX750V2.
Corsair does a great job in supplying you with almost every feature that you can ask for with the TX series of power supplies. The TX750V2 comes with SCP, OVP, OCP, OPP, and OTP. As part of the refresh of the TX series, the TX750V2 has gained some efficiency over its predecessor and is now 80Plus Bronze rated. The unit boasts ATX V2.3 support and is also rated for 100% continuous output at 50C."