I actually didn't thought about that. I mean thats possible too.
System:
Intel I5 760 (4C, no HT, 2.80Ghz, stock clock)
12GB ram (1333Hz, stock clock)
AMD 6870 (1Gb, stock clock)
Windows 7 64bit
2 physical HDD (SATA2, 1st for windows, 2nd for data - minecraft is also located/run from there)
3...