Comparison of SAPPHIRE NITRO+ Radeon RX 6600 XT video card vs ZOTAC GAMING GeForce RTX 2060 Twin Fan video card by specifications and benchmarks. SAPPHIRE NITRO+ Radeon RX 6600 XT runs at 1.968 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 160 W, and the second is 160 W. Compare the table of benchmark results to find out which graphic card is better.