Comparison of Sapphire Toxic Radeon RX 6900 XT Extreme Edition video card vs Colorful iGame GeForce RTX 3070 Neptune OC-V video card by specifications and benchmarks. Sapphire Toxic Radeon RX 6900 XT Extreme Edition runs at 1.825 GHz base clock speed and has 16 GB of GDDR6 memory, while video card Colorful iGame GeForce RTX 3070 Neptune OC-V runs at 1.500 GHz base clock speed and has 8 GB of GDDR6 memory. The TDP of the first video card is 430 W+ 43 %, and the second is 270 W+ 23 %. Compare the table of benchmark results to find out which graphic card is better.