I Beta tested W7-32 and 64 7000 release on a variety of old hardware just for fun. Ran W7-32 on NF2/Barton 3200 with 1G of ram, NF3/754pin 3200 1G ram, W7-64 on NF4/939pin 4600 2G ram. Loads fast, all my utilities seamed to work normal. Gamed on the 64bit rig. W7 requires about the same resources as XP ie:1/2 of Vista resources. Just bought W7-64 pro for new rig.