A middle of the road option in the AMD lineup, the AMD Athlon 5200+ can handle whatever you throw at it competently. Rated at 2.7GHz or 2.6GHz (dependent on the specific model processor you buy) with a TDP of 65W, the 5200+ is cool and efficient enough to be quiet and light on the utility bill, but strong enough to handle a fair bit of gaming or encoding without becoming a system bottleneck that causes major delays.
