Comparison of ASRock Radeon RX 6600 XT Challenger ITX 8GB video card vs ZOTAC GAMING GeForce RTX 2060 (ZT-T20600H-10M) video card by specs and benchmarks. ASRock Radeon RX 6600 XT Challenger ITX 8GB runs at 1.968 GHz base clock speed and has 8 GB of GDDR6 memory, while video card ZOTAC GAMING GeForce RTX 2060 (ZT-T20600H-10M) runs at 1.968 GHz base clock speed and has 6 GB of GDDR6 memory. The weight is different, 510 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.