The specifications of NVIDIA’s Ampere mobile GPUs have surfaced, with the top-end GeForce RTX 3080 expected to feature 6,144 cores and 16GB of GDDR6 memory, paired with a 256-bit bus. Unlike the desktop variant, this GPU will be based on the GA104 die and draw up to 150W of power. The RTX 3070 mobile, on the other hand, will pack 5,120 shaders and half as much memory (8GB), across the same 256-bit bus. It will reportedly have a TDP of up to 125W.
The budget class GeForce RTX 3060 will likely be based on the GA106 die with 3,072 shaders and 6GB of GDDR6 memory across a 192-bit bus. It is expected to have a TDP of up to 115W.
As you can see, the flagship Ampere mobile part will be comparable to the full-fledged RTX 3070 desktop part (the extra memory won’t have much of any effect in most cases) while the 3070 mobile should perform similar to the RTX 3060 Ti. In the case of the RTX 3060, the mobile and desktop variants should offer roughly the same levels of performance (not considering the Max-Q version).
The code and die names of the mobile Ampere GPUs are as follows:
- N18S-G5: MX450
- GN20-E3: RTX 3060 Mobile
- GN20-E5: RTX 3070 Mobile (GA104-770-A1)
- GN20-E7: RTX 3080 Mobile (GA104-775-A1)