Comparison of Intel HD Graphics (Sandy Bridge GT1) video card vs Intel Iris Pro Graphics P555 video card by specifications and benchmarks. Intel HD Graphics (Sandy Bridge GT1) runs at 0.850 GHz base clock speed and has 2 GB of memory, while video card Intel Iris Pro Graphics P555 runs at 0.350 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.