Yes, Windows 7-32 bit limit is 4 GB
Windows 7-64 bit varies; the upper RAM limits for the different editions of Windows 7:
Starter : 2GB
Home Basic : 8GB
Home Premium : 16GB
Enterprise : 192GB
Ultimate : 192GB
Thank you... I'm running in Ultimate, but my Bio board it limited to 16gb... Does or will windows 7 still run those currently loaded programs in 32 bit when I change to 64.... or do I loose them?