Can I run a few games on a moderate PC?

Roboturdo38

Honorable
Aug 17, 2013
7
0
10,510
Im planning on playing TF2, HL2, Gmod, Counter Strike: Source, and Fallout New Vegas on a PC with these specs:
Pentium D 2.8 Ghz Dual Core CPU
3 GB of RAM
Geforce GT 610 1GB GPU
160 GB SATA secondary hard drive

I have already tried HL2 at medium settings, usually getting 78-146 FPS. All these games will be installed on a seperate hard drive rather than the main drive. May I be able to run these with similair FPS? Especially Fallout NV and Gmod. And if so, at what resolution???