I have an R2E based rig that's wc'd that started out life with a 965XE in it and the thing performed! Then, when I got my Classy (I have the one WITH the NF200), I put the 965 in the classy and bought a D0 stepping 920 for the R2E.
I never could get the performance out of the R2E with the 920 tha people were getting with the D stepping 920 on the Classsy. To say the least, I was bummed :(
So... I put a 975XE on the Classy and now plan on either selling a bunch of stuff, including the R2E, or, putting the 965 back on the R2E for awhile and maybe even freezing the 920 for a bit ??? Don't know for sure what to do yet.
I do feel from my experience that the Classified is far and away the better of the two boards. ASUS tech support told me the R2E would either OC the CPU or the RAM but not both.... the Classy DOES BOTH WITH EASE
Yeah.. time to sell the R2E, but they're not making the NF200 edition anymore :(