On my new laptop (Quad core i7, 8GB RAM, 250GB SSD, love it!) Windows 7 Pro 64-bit, I notice my daily memory usage is about 5GB. I used to run closer to 3GB with the same applications when on Windows XP Sp3 32-bit.
I understand that many of my applications are 32-bit still, and when shown in Task Manager, have a *32 next to their names. I also understand these run in WOW sessions. (Windows on Windows)
The question I have is, what is the memory overhead of that WOW session? When I add up the RAM usage in Task Manager, I come no where close to 5GB. Much closer to 3GB, and 2GB of lost RAM is moderately concerning to me.