Comparison of Sapphire Pulse Radeon RX 6600 video card vs ZOTAC GAMING GeForce RTX 2060 Twin Fan video card by specifications and benchmarks. Sapphire Pulse Radeon RX 6600 runs at 1.626 GHz base clock speed and has 8 GB of GDDR6 memory, while video card ZOTAC GAMING GeForce RTX 2060 Twin Fan runs at 1.365 GHz base clock speed and has 6 GB of GDDR6 memory. The TDP of the first video card is 132 W, and the second is 160 W. Compare the table of benchmark results to find out which graphic card is better.