Parallels Desktop for Mac lets you run Windows and Windows apps on your Mac, shoulder to shoulder with OS X. Question: Q: Will 64-Bit Windows OS run in Parallels dont know if this is the right place, but i'm looking at buying Windows Vista Home Basic 64-Bit to run on my Mac (although i expect to hardly use it). I usually gave the VM 2GB ram in the past, but now I have 8GBs so I can give windows a bit more. Hey all, I finally got parallels 7 and I wanted to install windows 7 on it. I notice there is a 32 bit and 64 bit version of Windows 7. I just purchased Parallels version 5 for my iMac 3.4 GHz Intel Core i7 / 16GB memory / Mac OS 10.6.8. Supported Windows: Windows 10, Windows 8.1, Windows 7, Windows Vista, Windows XP (Service Pack 2 or later), Windows Server 2008 R2 (64-bit only), Windows Server 2008, or Windows 2000 Professional (32-bit only). Parallels For Mac Windows 7 32-bit Or 64-bit Windows.Parallels For Mac Windows 7 32-bit Or 64-bit Microsoft.