I found the Aeneon XTUNE DDR3-1600 CL9 4GB Memory Kit to be stable, reliable and performs very well. Considering this memory is comfortable at DDR3-1600 many won't even consider overclocking it, although you can push a little more out of it. Something else that's very impressive is the voltage. Only requiring 1.5 volts at break neck speeds is very cool or at least I think so. Most of the DDR3 memory I've tested in this category has a voltage at or above 1.8.