Comparison of XFX Speedster MERC308 Radeon RX 6600 XT BLACK Gaming video card vs Colorful iGame GeForce GTX 1070 Ti Vulcan X Top-V video card by specifications 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 iGame GeForce GTX 1070 Ti Vulcan X Top-V runs at 1.607 GHz base clock speed and has 8 GB of GDDR5 memory. The TDP of the first video card is 160 W, and the second is 180 W. Compare the table of benchmark results to find out which graphic card is better.