My 7th L633A549 works about 5.8G.
The proverb called lucky seventh is true.

modPI 1M WR : 8.843s @5741.1MHz (FSB574.1MHz x 10)


modPI 2M WR : 21.969s @5700.0MHz (FSB570.0MHz x 10)


modPI 4M WR : 50.641s @5700.0MHz (FSB570.0MHz x 10)


modPI 8M WR : 01m53.391s @5700.1MHz (FSB570.0MHz x 10)


CPU-Z : 5795.5MHz


(Set up)
M/B：ASUS P5K Rev.1.02G VMod (75MOACD45***/P5K0414.ROM)
M/B Bed：「V-TEC ARC Bed Rev.3.3」
NB watercooling：Alphacool NexXxoS NBX-A
SB watercooling：Alphacool NexXxoS NBX-N
CPU：Intel Core2 E6700(L633A549#7)
CPU cooling：MaxxNEO + LN2/temp：-163C
Memory：Team Xtreem PC2-6400 1GBx2 4-4-4-4
VGA：Matrox Millennium PCI 2MB
HDD：Western Digital WD360ADFD
Power Supply：OCZ PowerStream 520W
Vcore：1.836V(Actual)
Vio：3.50V(PC Probe 2)
Vdimm：2.56V(Actual)
OS：Windows Server 2003