Comparison of AMD Radeon R4 (Kaveri) video card vs Intel Iris Plus Graphics 645 video card by specifications and benchmarks. AMD Radeon R4 (Kaveri) runs at 0.490 GHz base clock speed and has 2 GB of memory, while video card Intel Iris Plus Graphics 645 runs at 0.300 GHz base clock speed and has 32 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.