Comparison of Intel HD Graphics 620 video card vs Intel GMA 3600 video card by specifications and benchmarks. Intel HD Graphics 620 runs at 0.300 GHz base clock speed and has 32 GB of memory, while video card Intel GMA 3600 runs at 0.400 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.