The ATI onslaught of 40nm DirectX 11 parts continues today with two even cheaper variants coming from its Evergreen family of chips. Based on the Juniper core, the HD 5770 and 5750 represent ATI's mainstream value proposition, with compute performance of more than 1 TFLOPS and pricing between $109 and $159. There's a significant dropoff in specs from the world-conquering HD 5870 and similarly potent HD 5850, but reviewers