Comparison of ASUS ROG Strix Radeon RX 6800 OC video card vs ZOTAC GeForce GTX 980 Ti AMP! Extreme video card by specs and benchmarks. ASUS ROG Strix Radeon RX 6800 OC runs at 1.850 GHz+ 9 % base clock speed and has 16 GB of GDDR6 memory, while video card ZOTAC GeForce GTX 980 Ti AMP! Extreme runs at 1.850 GHz+ 9 % base clock speed and has 6 GB of GDDR5 memory. The weight is different, -- vs --. The TDP of the first video card is 250 W, and the second is 250 W . Compare the benchmark results to find out which video card is better.