Comparison of Intel HD Graphics 520 video card vs AMD Radeon HD 7420G video card by specifications and benchmarks. Intel HD Graphics 520 runs at 0.350 GHz base clock speed and has 32 GB of memory, while video card AMD Radeon HD 7420G runs at 0.480 GHz base clock speed and has 2 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.