So added more ram, now its quad channel. no change in hash rate.
looks like this is it:
https://www.win-raid.com/t3874f16-GUIDE-Haswell-E-EP-Xeon-CPUID-F-Turbo-Unlock.html
http://www.miyconst.com/Blog/View/2081/xeon-e5-2600-v3-turbo-boost-unlock
http://www.xtremesystems.org/forums/showthread.php?293290-Various-Overclocker-discovers-Xeon-E5-V3-Errata-Engineers-exploit-to-unlock-Turbo