Clock speed and per core performance are just to low with that cpu.
But there is good news, you can buy a 100 dollar AMD am3 cpu for your m/b possibly.
Maybe one of the new ones just introduced.http://www.fudzilla.com/processors/processors/processors/amd-shows-off-autumn-cpu-lineup
The Phenom II X2 560BE is an 80W dual-core clocked at 3.3GHz and it should go for $105, which sounds like a quite reasonable deal.
In addition to Phenom series processors, AMD also introduced a new Athlon and apparently dropped the price of some older models. The Athlon II X3 450, originally spotted in August, is now shipping at $87, which sounds like a very good deal for a 3.2GHz tri-core