Comparison of Intel GMA 3600 video card vs AMD Radeon HD 6620G video card by specifications and benchmarks. Intel GMA 3600 runs at 0.400 GHz base clock speed and has 1 GB of memory, while video card AMD Radeon HD 6620G runs at 0.440 GHz base clock speed and has 1 GB of memory. The TDP of the first video card is --, and the second is --. Compare the table of benchmark results to find out which graphic card is better.