Summary: Even though the model number 8500 sounds much bigger than 7300, the GeForce 8500 GT is only a very minor upgrade to the GeForce 7 Series. I would say it mainly adds new features like Shader Model 4.0 and support for accelerated HD video decoding.
When comparing the GeForce 8500 GT to the GeForce 7300 GT we see a 10% performance increase, which is much less than everybody expected.
Pros: Good price / performance, Factory overclocked with full warranty, SLI Support, Supports all new G86 features like accelerated H.264 decode, Low power consumption
Cons: Minor upgrade to GeForce 7 Series, New ATI products out soon that compete with it, Active cooling fan