Comparison of Gainward GeForce RTX 3080 Phantom video card vs ZOTAC Gaming GeForce RTX 3080 AMP Holo video card by specs and benchmarks. Gainward GeForce RTX 3080 Phantom runs at 1.440 GHz base clock speed and has 10 GB of GDDR6X memory, while video card ZOTAC Gaming GeForce RTX 3080 AMP Holo runs at 1.440 GHz base clock speed and has 10 GB of GDDR6X memory. The weight is different, -- vs --. The TDP of the first video card is 340 W+ 6 %, and the second is 340 W+ 6 % . Compare the benchmark results to find out which video card is better.