By using this site, you agree to the Terms of Use and Privacy Policy. OpenGL 4. WIP [8]. AMD Radeon HD 6620G + HD 7450M Dual Graphics Radeon HD series. TeraScale 2 40 nm. GCN 1 st gen 28 nm. How it works - Download and run UserBenchMark. Group Test Results Best user rated - User sentiment trumps benchmarks for this comparison. Best value for money - Value for money is based on real world performance. Fastest real world speed[…]