As long as it is at stock, yes, but the proMOSs are what you find in extremely cheap RAM, and do not overclock well at all. The Microns are much higher quality.
Yeah, the volts, timings, and speed are the same between the XMS2 and XMS2 DHX. The only difference is the one you stated.
So I guess I will pick up some XMS2 (not DHX) when I get my PSU.