While the L737 batch has been known to produce excellent overlockers (amongst the best in the G0 stepping,) higher number L737s, such as your L737B6, are much more hit or miss. Only way to find out how well your chip will do is to put it in your rig and test. Be sure to check the VID of the chip in Core Temp. If it's 1.325 (as many higher number 737s are,) you might be in for a bit of a challenge.