Comparison of AMD Radeon R7 - 512 (Merlin Falcon) video card vs AMD Radeon HD 7620G video card by specifications and benchmarks. AMD Radeon R7 - 512 (Merlin Falcon) runs at 0.800 GHz base clock speed and has 2 GB of memory, while video card AMD Radeon HD 7620G runs at 0.360 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.