I consider buying Samsung 830 64GB as a system drive, so of course I will install Windows 7 on this. Besides Windows 7, what else should I put on the SSD to maximize the benefit? For example, should I move or install again Steam games and/or MS Office to the new drive? Other than gaming, this PC is usually playing streaming video, working on Office, browsing webs, and DVD-to-mobile format converting (not yet, but will do after finding a good software). Here is the PC's current spec.
MSI H67 MB
Corsair DDR3 1333MHz 8 GB (4 GB x 2)
Samsung Spinpoint F3 500GB HDD
EVGA GTX 560 Ti 448 Core Classified
Antec Three Hundred
Windows 7 64 bit Ultimate
Batman Arkahm City
Portal 1 & 2
I'd add Office next since I use that more than any individual game, and then add games if they are used often until you are down to 20gb free space. Move your paging file to a HDD as you will rarely use it with 8gb RAM and that will free up a lot of space.