- INT32 Unit remains unchanged.
- Double the FP32 Unit for shader proportion.
- The performance of the new Tensor Core is doubled.
- Enhanced L1 Data Cache for more comprehensive functions.
- True architecture for RTX GAMING with all-new design RT CORE ADVANCED.
The last bit is something that sounds straight out of NVIDIA marketing material and is something that makes me think that this
just might turn out to be true. RT Core Advanced is also a very plausible naming scheme coming from what appears to be a non-native English speaker. Consider me intrigued at the very least although I would still advise copious amounts of salt to go with this.
NVIDIA RTX 3080 Ti 'GA103' GPU will have 60 SMs and 320-bit 10GB/20GB Graphics Memory
The rumor doesn't end there, the tweeter has also made block diagrams of the GA103 and GA104 GPUs - which would be the graphics processors that the mainstream client will actually get after launch. These are the parts that a gamer will be able to buy without going completely bankrupt. For the higher end GA103 part, which will end up being the RTX 3080 Ti or whatever NV decides to call it, you are looking at 60 SMs for a total of 3840 CUDA cores assuming the old proportion or 7680 CUDA cores assuming a new 128 cores per SM ratio (thanks for the flag, Boro and PCMasterRace!). For reference, the RTX 2080 Ti has 72 SMs with 4608 CUDA Cores.
Coupled with the doubled RTX core performance (and the resulting increase in DLSS throughput) you are easily looking at real-world performance increase in the range of 50% over Turing. If NVIDIA shifts to a 7nm process, they would be able to manage all this while staying well within acceptable power thresholds. The GA103 Ampere GPU will be coupled with 10GB/20GB vRAM.
NVIDIA RTX 3080 'GA104' GPU will have 48 SMs and 256-bit 8GB/16GB Graphics Memory
Up next, you have the GA104 GPU, which should end up in the RTX 2080 replacement (the RTX 3080?) with 48 SMs (3072 CUDA cores based on old proportion, 6144 new). This is very slightly more than the RTX 2080 at 46 SMs. Coupled with higher performance throughput and the doubled RTX cores you are once again looking at significant performance increases if this turns out to be true. According to the rumor, the RTX 3080 GPU will be coupled with 8GB/16GB of vRAM and a 256-bit bus width.