Comparison of Intel HD Graphics 505 video card vs AMD Radeon HD 7420G video card by specifications and benchmarks. Intel HD Graphics 505 runs at 0.500 GHz base clock speed and has 8 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.