Comparison of ASRock Radeon RX 6700 XT 12GB video card vs MANLI GeForce GTX 1660 (M1432+N549-00) video card by specifications and benchmarks. ASRock Radeon RX 6700 XT 12GB runs at 2.321 GHz base clock speed and has 12 GB of GDDR6 memory, while video card MANLI GeForce GTX 1660 (M1432+N549-00) runs at 1.530 GHz base clock speed and has 6 GB of GDDR5 memory. The TDP of the first video card is 230 W, and the second is 120 W. Compare the table of benchmark results to find out which graphic card is better.