Comparison of Intel Arc A770 Graphics 8GB video card vs ASRock Intel Arc A750 Challenger D 8GB OC video card by specs and benchmarks. Intel Arc A770 Graphics 8GB runs at 2.100 GHz base clock speed and has 8 GB of GDDR6 memory, while video card ASRock Intel Arc A750 Challenger D 8GB OC runs at 2.100 GHz base clock speed and has 8 GB of GDDR6 memory. The weight is different, -- vs 785 g. The TDP of the first video card is 225 W, and the second is 225 W . Compare the benchmark results to find out which video card is better.