The Unigine Heaven benchmark is terribly slow for the Radeon HD 6450 graphics card. With the OpenGL Linux renderer at a resolution of just 800 x 600, the HD 6450 is only able to put out five frames per seconds. While the Radeon HD 6450 is an improvement over the Radeon HD 5450, it's much slower than the Radeon HD 6550D Llano Fusion graphics and the other graphics cards. Even the NVIDIA GeForce GT 520 was nearly twice as fast as the Radeon HD 6450 from PowerColor.
When running the less demanding Unigine Tropics test, the Radeon HD 6450 is about 40% faster than the Radeon HD 5450, but it's still much slower than the integrated graphics on the Fusion A8-3850 APU. Coming in at close to the same speed as the Radeon HD 6450 was the GeForce 9500GT and GeForce GT 520.
Unigine Sanctuary is a similar story to the Unigine Tropics results for the PowerColor Radeon HD 6450 graphics card with 1GB of DDR3 video memory.