Comparison of AMD Radeon HD 6550D video card vs Apple M1 Ultra (48 Core) video card by specifications and benchmarks. AMD Radeon HD 6550D runs at 0.600 GHz base clock speed and has 1 GB of memory, while video card Apple M1 Ultra (48 Core) runs at 1.300 GHz base clock speed and has 64 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.