I´m using A-Data´s Vitesta Extreme X1600:
http://oc.adata.com.tw/1_product_det...?pid=AD31600XU

I were able to run them fine with this board at 1600MHz at 2.1V and CL 7-7-7-18 when I was usin Xeon E3110 but now with E7200 they do´nt oc, weird.