Is this is a good computer.?

Dell Inspiron 530s-Intel pentium Daul Core @ 1.6 ghz-4 gb DDR2 Ram-256 mb video memory-Thanks I use it to play Quickhit Football Cross Fire and Battlefield Heroes. They all run great with barely any lag and that's with 1gb of memory. I'm upgrading to 4 gb. I think it has some sort of processer booster.