The 1600MHz 7-8-7 1.35volt ECO kit is also doing great at relaxed timings :P
This was just a boot after i had Corsair GTX1 in, didnt even think it would boot, but turned out to be 32M stable, so im sure there is more left in this little ECO kit :)
http://peecee.dk/uploads/022010/G.Sk..._9-11-9-29.jpg