Comparison of XFX Speedster MERC 319Radeon RX 6750 XT Black Gaming video card vs Colorful iGame GeForce GTX 1080 Ti Neptune W-V video card by specs and benchmarks. XFX Speedster MERC 319Radeon RX 6750 XT Black Gaming runs at 2.324 GHz+ 6 % base clock speed and has 12 GB of GDDR6 memory, while video card Colorful iGame GeForce GTX 1080 Ti Neptune W-V runs at 2.324 GHz+ 6 % base clock speed and has 11 GB of GDDR5X memory. The weight is different, -- vs --. The TDP of the first video card is 250 W, and the second is 250 W . Compare the benchmark results to find out which video card is better.