Comparison of Intel Iris Plus Graphics 640 video card vs AMD Radeon R7 - 512 (Bristol Ridge) video card by specs and benchmarks. Intel Iris Plus Graphics 640 runs at 0.300 GHz base clock speed and has 32 GB of memory, while video card AMD Radeon R7 - 512 (Bristol Ridge) runs at 0.300 GHz base clock speed and has 2 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.