Hmmm, you must of missed my post #84 of my chip.
http://www.hwbot.org/forum/showpost.php?p=92663&postcount=84
Either way new high for me:
2600k
5640.6 MHz
Batch # - L041B229
Serial # - 1422
http://www.hwbot.org/community/submission/2123096_drnip_cpu_z_core_i7_2600k_5640.57_mhz
EDIT: I found it. You have mine under L041B299 whereas mine is L041B229.