Corsair TX850w ATX PSU
Corsair have never been a company to cut corners where the packaging of PSU's is concerned, and as we can see from the images below, the TX series is certainly no exception. Packaged inside a double-walled cardboard box similar in design to that of the HX620, the TX850 is protected by two large styrofoam inserts that completely encompass the unit, protecting it on all sides from damage. Furthermore, Corsair have also gone to the trouble of placing the PSU in a plastic bag along with a black felt bag on top. I'll eat my pants if they've had so much as one unit returned 'damaged in transit'.
Quite unique to the TX850 is the use of a 140mm fan that comes close to touching the edges of the casing and almost looks like Corsair had to use a shoehorn to get it into place. The advantage of such a large fan is primarily to reduce cooling dead spots inside the unit where a traditional 120mm fan cant quite reach, while also shifting more air at lower speeds/noise levels. Interestingly, the TX650 doesn't share the same fans as the 750w and 850w models, quite possibly due to its smaller dimensions and lower output.
Now let's move on to some of the more interesting stuff...the PSU internals...