Specs:
Model CUDA Cores Boost Tensor Cores TGP* Bus Memory Price
GeForce RTX 3090 10496 1700 MHz 328 350W 384bit 24GB GDDR6X $1499 USD
GeForce RTX 3080 8704 1710 MHz 272 320W 320bit 10GB GDDR6X $699 USD
GeForce RTX 3070 5888 1730 MHz 184 220W 256bit 8GB GDDR6X $499 USD
*TGP is a measure of maximum power draw over time for the entire graphics card. It does not represent the maximum peak power draw.
Performance wise, Nvidia claims that:.
RTX 3090 is up to 1.5x faster than the TITAN RTX (similar to RTX 2080 Ti), and a Titan level card.
RTX 3080 is up to 2x faster than RTX 2080 and is the flagship Ampere GPU, to be compared to 2080Ti, 2080 SUPER.
RTX 3070 is faster than the RTX 2080 Ti and 1.6x faster than the RTX 2070
The required PSU wattage:
3090 = 750W
3080 = 750W
3070 = 650W
12-pin:
A 12-pin adaptor will be sent with all 30-series cards. In order to power on the GPU correctly, Nvidia says you need to make sure to use two separate cables from the PSU and NOT a splitter. Reference here:
https://imgur.com/a/qNqXga8
https://i.imgur.com/dFC57OC.png