For gaming don't go for pentium dual core you will get very disappointed i also have pentium dc and i wanna sell it .
You want quad core for gaming its only one from AMD FX 4300 its best for gaming , you have get a better gpu like ATI RADEON HD 7000 series or better or NVIDIA 600 series or better with minimum of 4 gb ram and you will get mid end pc .
If you want get amd apu series cpu go for A10 7000 SERIES