Comparison of XFX Speedster MERC 319 Radeon RX 6700 XT Black Gaming video card vs GALAX GeForce GTX 1080 EX OC V2 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 GALAX GeForce GTX 1080 EX OC V2 runs at 1.620 GHz+ 1 % base clock speed and has 8 GB of GDDR5X memory. The TDP of the first video card is 211 W-8 %, and the second is 180 W. Compare the table of benchmark results to find out which graphic card is better.