Comparison of XFX Speedster MERC308 Radeon RX 6600 XT BLACK Gaming video card vs GIGABYTE GeForce RTX 2060 OC 6G (rev. 2.0) video card by specs and benchmarks. XFX Speedster MERC308 Radeon RX 6600 XT BLACK Gaming runs at 2.188 GHz+ 11 % base clock speed and has 8 GB of GDDR6 memory, while video card GIGABYTE GeForce RTX 2060 OC 6G (rev. 2.0) runs at 2.188 GHz+ 11 % base clock speed and has 6 GB of GDDR6 memory. The weight is different, -- 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.