Comparison of AMD Radeon Vega 11 Graphics video card vs AMD Radeon RX 660M video card by specs and benchmarks. AMD Radeon Vega 11 Graphics runs at 1.400 GHz base clock speed and has 2 GB of memory, while video card AMD Radeon RX 660M runs at 1.400 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.