I see you have the GTS 450 listed .
Its performance is located between te Radeon HD 5750 (Starting at $125) and the Radeon HD 5770 (Starting at $140), although it’s closer to the 5750.
Priced at $130, it’s a tough sell when you can either get the much faster Radeon HD 4870 for $120 or when considering that it doesn’t perform as well as the Radeon HD 5770 ($140) and consumes more power, according to both AnandTech’s review of the Geforce GTS 450 as well as Guru3D’s review of the Geforce GTS 450.