Comparison of AMD Radeon HD 6620G video card vs AMD Radeon R6 (Merlin Falcon) video card by specs and benchmarks. AMD Radeon HD 6620G runs at 0.440 GHz base clock speed and has 1 GB of memory, while video card AMD Radeon R6 (Merlin Falcon) runs at 0.440 GHz base clock speed and has 0 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.