I'm with Benji Tshi at the GamesCom 2010 to overclock some Kingston DDR3, this is what we achieve so far.
P55 UD6 bios 10
DDR3-2333 triple kit (KHX2333C9D3T1, 1Go stick)
DDR3-2400 dual kit (KHX2400C9D3T1, 2 Go stick)
pink foam memory pot ()
1,58v for vtt
1,88v for vdimm
temperature of memory around -120°C but difficult to have a precise value with this "pot"
2x1Go DDR3-2333 kit:
validation link: http://valid.canardpc.com/show_oc.php?id=1355669
Super Pi 1m @DDR3-3035 C8
Some photos of the event
this morning we are testing the DDR3-2400 kit