According to Videocardz.com, the RTX 30 series GPU is made on a 7nm manufacturing process, but so far, this is still unconfirmed data. What Videocardz.com managed to confirm from its sources, and pretty much what we have been hearing from sources close to Nvidia, is a triple SKU launch, with RTX 3090 as the flagship card. There is still no word on the possible RTX 3060, or what Nvidia plans to offer in the mid-range segment, as those cards should come at a later date.
The Geforce RTX 3090 should end up with 5248 CUDA cores and 24GB of 19.5Gbps GDDR6X memory on a 384-bit memory interface, leaving it with a maximum bandwidth of 936GB/s. As detailed earlier and confirmed by Nvidia in its recent teaser, it will use the new 12-pin power connector, or two 8-pin PCIe power connectors, which should be enough to cover the 350W TGP.
The Geforce 3080 cuts the CUDA core number down to 4352 and comes with 10GB of 19Gbps GDDR6X memory on a 320-bit memory interface, which leaves it with a maximum bandwidth of 760GB/s. There is also a possibility that Nvidia AIC partners could come up with a 20GB version but this one is coming at a later date. The RTX 3080 also comes needs two 8-pin power connectors as it has a TGP of 320W.
The Geforce RTX 3070, could launch by the end of next month, and it is still not clear how much did Nvidia cut down that GA104 GPU, but most rumors point to a 46 SMs or 2944 CUDA cores. It should end up with 8GB (16GB SKUs are possible) of 16Gbps GDDR6 memory on a 256-bit memory interface, leaving it with 512GB/s memory bandwidth. It has a TGP of 220W.
There is bound to be more leaks as we draw closer to the special Nvidia Geforce Anniversary event, scheduled for September 1st.