Mostly Source based games but also some other more demanding games with the most demanding being Fallout 3. Full specs of my PC (Upgrading the RAM soon):
MB: Intel-D946GZIS
CPU: Intel Duo Core @2.13GHz
Intergrated GPU: Intel 946GZ Express Chipset
RAM: 2Gb DDR2 Dual Channel
HDD: SATA1 200Gb
MB: Intel-D946GZIS
CPU: Intel Duo Core @2.13GHz
Intergrated GPU: Intel 946GZ Express Chipset
RAM: 2Gb DDR2 Dual Channel
HDD: SATA1 200Gb