Aeneon's first attempt into the high end DDR3 market hasn't gone as well as we would've liked to have seen; while it did do the 1333MHz that the memory is rated for, its overclocking leaves a lot to be desired as it simply has a huge bottleneck, that being it will not pass 1400MHz no matter what we set the memory timings or voltages to.
While the modules would be good as basic DDR3 setup, Xtune is not the basic line of modules. Aeneon wants to push this as top line stuff, but unfortunately it just doesn't stack up compared to companies like OCZ, Corsair and the likes out there. If you're really serious about your memory, you're going to need to shop around elsewhere.
Overall, a basic memory module here, but not the overclocking king it strives to be. Much better value can be had.