Comparison of AMD Radeon R3 (Stoney Ridge) video card vs Intel Iris Plus Graphics 940 video card by specs and benchmarks. AMD Radeon R3 (Stoney Ridge) runs at 0.660 GHz base clock speed and has 2 GB of memory, while video card Intel Iris Plus Graphics 940 runs at 0.660 GHz base clock speed and has 32 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.