Comparison of Sapphire Radeon RX 5700 8G video card vs GIGABYTE GeForce GTX 1080 G1 Gaming 8G video card by specs and benchmarks. Sapphire Radeon RX 5700 8G runs at 1.465 GHz base clock speed and has 8 GB of GDDR6 memory, while video card GIGABYTE GeForce GTX 1080 G1 Gaming 8G runs at 1.465 GHz base clock speed and has 8 GB of GDDR5X memory. The weight is different, -- vs --. The TDP of the first video card is 180 W, and the second is 180 W . Compare the benchmark results to find out which video card is better.