I can't speak to the performance of the entire HX series, but my HX1000 has been running pretty much 24/7 on my main computer (the one I'm typing on right now), and ran 3X7970's for the last ? however long since they first came out until I shut them down when I got my avalon, but I still got one 7970 in there for games and litecoin, and the PSU is still kicking ass.

Also, more than once, I had a pile-up of laundry or other debris blocking the exhaust of the PSU (I have a case where the PSU is on the bottom) and it got very hot, it ran pretty hot mostly all the time, but when the exhaust would get blocked it was totally roasting, and still, not one hiccup or complaint.

of course, your mileage may vary, and I am very impressed with the efficiency of the Seasonic 1000 platinum, the thing barely gets warm, but I haven't nearly put it through the kind of torture that old HX1000's been through..


the only thing I worry about (and the main reason I chose the seasonic) is that the HX1000 is not a single-rail design, and I wonder if some of the problems we've seen aren't due to imbalanced loading on a multi-rail device??? But I'm not an engineer, I just played one in university.