Summary
The claimed numbers on these modules were top-notch, so we could not wait to fire up the Kingston Hyper X 2800MHz modules. Kingston has only made a limited supply of 2800MHz Hyper X modules, which is unsurprising, considering their rated speeds. As it turns out, these modules are off the chart for frequencies and their performance matches this with killer read/write/copy speeds and low latencies. These are speeds we have never seen before.
Still, the modules didn’t completely live up to their hype. They did hit 2800MHz; however, they were not stable. Perhaps Kingston should really rate these modules at 2667MHz just to be on the safe side, since that is a more accurate speed rating. This would certainly give them more headroom for overclocking, and the modules were completely stable at these frequencies.

The read/write/speeds achieved on the 2800MHz modules were beyond what we have seen by any modules we have tested so far. Kingston has something special here. We recently tested their 1866MHz Hyper X modules and their 2133MHz low profile Hyper X Genesis and they have continued their trend of highly competitive performance. Kingston has always manufactured great quality modules, with great overclocking and and high performance. These modules are no exception. Unfortunately, we cannot say yea or nay to full production but if Kingston chooses to run with the Hyper X 2800MHz they will certainly be priced to move and they easily earn our Pure Overclock Editor’s Choice Award.

Kingston HyperX 8GB DDR3-2800
These tall heat spreaders kill me…I have a pair of OCZ reapers with the double arm heat spreaders and bc of my dual fan cpu heatsink, I had to move my DIMM’s to slot 3 and 4 from 1 and 2…I honestly think since that move I’ve had a slight drop in performance. So, unless you have the right amount of clearance, stay away.
Running in slots 3 and 4 will give less performance becuase you are now in single channel, Slots 1 and 3 or 2 and 4 runs in dual channel. Obviously Listless needs a little more information and do not stay away from these modules if Kingston produces them. They are off the chart frequencies however, if you have a large heatsink, you need to insure slot 2 is not covered. It is a problem with every platform and not the Kingston hyper X’s doing.