Summary: my fps jumped to double this card runs very well and replaced my 4650 with no trouble at all . if you have 300 or less power supply then this is a safe card to use . it should run anything out there on low to med settings without replacing your power supply . i checked before bought it uses almost the same power as a 4650 but is better in many ways .
Summary: Running the Catalyst Control Center's OverDrive shows the actual specs are: Core Clock- 100MHz(max- 900) and Mem Clock- 150MHz(max- 1150, not 4000). That said, still a great deal and excellent product. I was able to raise the graphics detail on my games and sims to high and still achieve better performance than what I had with a 5450-based card.