Comparison of AMD Radeon HD 7420G video card vs Intel HD Graphics 505 video card by specs and benchmarks. AMD Radeon HD 7420G runs at 0.480 GHz base clock speed and has 2 GB of memory, while video card Intel HD Graphics 505 runs at 0.480 GHz base clock speed and has 8 GB of memory. The weight is different, -- vs --. The TDP of the first video card is --, and the second is -- . Compare the benchmark results to find out which video card is better.