i know my p55 ftw 200 can do 2600+ ram, but i cant find any that fast.  so far the best i have found is the Corsair Dominator® GT with DHX Pro Connector and Airflow II Fan — 4GB Dual Channel DDR3 Memory Kit (CMT4GX3M2A2000C8).  can anyone tell me if there any faster n better memory i can get???  ty in advance.
 
Alice

so the corsair probly my bestbet then???

could u recomend a good set then???  my memory dont seam to work right
 
alice

Here is the 1s I use and they have CAS 7
CORSAIR XMS3 4GB (2 x 2GB) 240-Pin DDR3
SDRAM DDR3 1600 (PC3 12800)
Desktop Memory Model CMX4GX3M2A1600C7
http://www.newegg.com/Product/Product.aspx?Item=N82E16820145285&Tpk=CMX4GX3M2A1600C7 
They are 2 x2GB , but I bought 2 sets and am running 8 GB


The implication of high RAM support just means if overclocking, but there is no gaurantee your CPU's memory controller will take it up there due to levels quality.  Overclocking is luck fo the draw, Intel (or any vendor including EVGA) doesn't make gaurantees regarding out-of-specification.
 
DDR3-2600 would require for instance a 2:10 ratio at a 260MHz which can push the CPU to over 5Ghz if leaving the CPU multi alone -- not with LN2.  So you would have to push higher RAM divder ratios and lower the CPU multiplier.  But, unless your RAM can actually run at 2600Mhz, there is no way to tell beforehand, you just have to try it out in small steps while stress testing throughout.