Comparison of AMD Radeon R3 (Stoney Ridge) video card vs AMD Radeon R6 (Merlin Falcon) video card by specifications and benchmarks. AMD Radeon R3 (Stoney Ridge) runs at 0.660 GHz base clock speed and has 2 GB of memory, while video card AMD Radeon R6 (Merlin Falcon) runs at 0.800 GHz base clock speed and has 0 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.