As I sit here waiting for my new hardware to come I couldn't help but relive what I thought when I first built the system in my signature with an E2180 back in November. My memory is Mushkin HP2-6400, atleast that is what I'm lead to believe. The thing that I'm most curious about is the color of the heatspreaders on my kit. They are Black like the XP2's but every single review I've seen and even the official Mushkin site shows HP2's with Blue heatspreaders. Is there any real way to tell if I got XP2's or HP2's besides taking off the heatspreaders? What makes this even more interesting is that I can overclock these modules to 1000mhz on stock voltages of 1.8v. I haven't tried higher but every review I've read requires a bump in volts to get them that high. Maybe I have some freakazoid ram, I don't know. Any insight on finding out what these are would be greatly appreciated.