Comparison of Sapphire Pulse Radeon RX 580 8G G5 video card vs Colorful iGame GeForce GTX 1070 SI-8G-V video card by specifications and benchmarks. Sapphire Pulse Radeon RX 580 8G G5 runs at 1.257 GHz base clock speed and has 8 GB of GDDR5 memory, while video card Colorful iGame GeForce GTX 1070 SI-8G-V runs at 1.506 GHz base clock speed and has 8 GB of GDDR5 memory. The TDP of the first video card is 185 W, and the second is 150 W. Compare the table of benchmark results to find out which graphic card is better.