Corsair doesn't have to be introduced as a power supply brand any more, as they've made such a splash since first entering this market in 2006 with the modular cable HX series. In 2007, they introduced four more power supply models: The VX450 and VX550, followed by the TX650 and TX750. All of these have non-detachable cables. We reviewed the VX450 not long ago, and gave it two thumbs up: It's another high quality, quiet PSU made for Corsair, again, by Seasonic. Interestingly, the TX650 is also made by Seasonic, but the VX550 and TX750 are both made by Channel Well. It's not clear why different suppliers were used for these various models.

The TX650W reflects the escalating power trend among enthusiast computer users, driven mostly by power-hungry graphics cards. Its 650W rating is considered mid-range by extreme gamers today. Interestingly, Corsair's marketing makes a big deal about the unit's single 12V line, in contrast to so many other brands which tout multiple 12V lines. As with all the Corsair power supplies introduced in 2007, the TX650 is 80 Plus certified, which assures 80% or higher efficiency from 20% load on up to full power. The packaging is similar to the HX and VX series, with a classy, understated look. The TX750 differs visibly in that it has a 140mm fan instead of the other VX and TX models' more common 120mm fan.