Comparison of GALAX GeForce RTX 2080 Dual Black video card vs Gainward GeForce RTX 2080 Phantom video card by specifications and benchmarks. GALAX GeForce RTX 2080 Dual Black runs at 1.515 GHz base clock speed and has 8 GB of GDDR6 memory, while video card Gainward GeForce RTX 2080 Phantom runs at 1.515 GHz base clock speed and has 8 GB of GDDR6 memory. The TDP of the first video card is 215 W, and the second is 215 W. Compare the table of benchmark results to find out which graphic card is better.