Comparison of AMD Radeon HD 8400 video card vs Intel UHD Graphics 620 video card by specifications and benchmarks. AMD Radeon HD 8400 runs at 0.600 GHz base clock speed and has 2 GB of memory, while video card Intel UHD Graphics 620 runs at 0.300 GHz base clock speed and has 16 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.