Comparison of XFX Speedster MERC308 Radeon RX 6600 XT BLACK Gaming video card vs Colorful GeForce RTX 2060 6G-V 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 Colorful GeForce RTX 2060 6G-V runs at 2.188 GHz+ 11 % base clock speed and has 6 GB of GDDR6 memory. The weight is different, -- vs 800 g. 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.