Comparison of ASRock Radeon RX 6600 XT Challenger D 8GB OC video card vs ZOTAC GAMING GeForce RTX 2060 Twin Fan video card by specs and benchmarks. ASRock Radeon RX 6600 XT Challenger D 8GB OC runs at 2.000 GHz+ 2 % base clock speed and has 8 GB of GDDR6 memory, while video card ZOTAC GAMING GeForce RTX 2060 Twin Fan runs at 2.000 GHz+ 2 % base clock speed and has 6 GB of GDDR6 memory. The weight is different, 640 g vs --. The TDP of the first video card is 160 W, and the second is 160 W . Compare the benchmark results to find out which video card is better.