After the dust settles, we end up with a very fine power supply that handled all levels of stress with no difficulties. All rails maintained either full factory rated voltage levels, or in most cases exceeded them. Given that a power supply is generally given a +/- 5% leeway in any of the rails, the fact that the GameXStream managed to overachieve bodes well, especially for those looking for a power supply for a monster.
Another very nice addition was the native support for up to six SATA devices without having to resort to splitters. Gamers are notorious for wanting large RAID arrays and this thing will handle the load with ease. Some may be a little concerned with having only six Molex connectors, but with SATA becoming the mainstay nowadays, I don't feel this is much of an issue.
The LED lighting on the fan gives a nice effect to the overall aesthetics of the PSU. The light isn't terribly bright and doesn't look to be overkill, but you may want to beware that it is a blue lighting, so this may be of importance if you are running a different colored lighting scheme in your system. Also of note was the very quiet operation of the fan. Even when I hot-wired the power supply to see how loud it was, I had to strain to hear it with no system attached. Very nice indeed!
As far as price is concerned, this particular model will go in at around US$140 or so. While not at the very top of the price chart, it does sit toward the upper edge of it for this type of power supply. Of course, you also get a future proof layout and also compatibility with nearly anything ATX and above. This isn't something that you are assured of with many models currently hitting the open marketplace right now.
Bottom line... If you've been looking into a power supply upgrade and have plans for building a high-end gaming machine, then let me recommend the OCZ GameXStream 600 to you. It has power to spare, has nearly full compatibility with any motherboard you may have, and has native support for more devices than you are likely to be installing anyway. It is difficult not to recommend such a unit to anyone, so do yourself a favor and make sure this one hits your short list of potential candidates.
Solid power across all voltage rails
Very slight dip in voltage when under stress
Cable meshes already in place
Rating - 9 out of 10 and TweakTown's "MUST HAVE" Best Performance Award!