Comparison of XFX Speedster MERC 319 Radeon RX 6700 XT Black Gaming video card vs KFA2 GeForce GTX 1070 EX Black Edition video card by specifications and benchmarks. XFX Speedster MERC 319 Radeon RX 6700 XT Black Gaming runs at 2.457 GHz+ 6 % base clock speed and has 12 GB of GDDR6 memory, while video card KFA2 GeForce GTX 1070 EX Black Edition runs at 1.518 GHz+ 1 % base clock speed and has 8 GB of GDDR5 memory. The TDP of the first video card is 211 W-8 %, and the second is 150 W. Compare the table of benchmark results to find out which graphic card is better.