NVIDIA GeForce RTX 3080 Ti GA103 GPU has finally been pictured
After two days since the official launch of the RTX 3080 Ti Laptop GPU, we finally have the first photos thanks to Chinese YouTuber Geekerwan.
NVIDIA GA103 GPU, Source: Geekerwan
The history of GA103 GPU takes us back to May 2019. This is when Kopite7Kimi made the first comment on the supposed NVIDIA Ampere lineup. This new GPU was included in the list of the upcoming (at the time) GeForce RTX 30 series. However, it wasn’t until January 2022 for this information to be confirmed.
This week NVIDIA formally introduced its GeForce RTX 3080 Ti Laptop GPU featuring GA103S/GA103M GPU labeled as GN20-E8-A1 for this mobile graphics card. This is not the full implementation of the GA103 GPU though, as the rumored specs mentioned up to 7680 CUDA cores, whereas the mobile 3080 Ti comes with 7424 cores.
It should also be noted that the full GA103 GPU supposedly has ten 32-bit memory controllers, which indicates a maximum 320-bit memory bus. Meanwhile, RTX 3080 Ti Laptop GPU comes with a 256-bit interface. Unfortunately, till NVIDIA releases the official block diagram of their new GPU, this will not be confirmed.
NVIDIA GA103 GPU, Source: Geekerwan
Geekerwan came up with an interesting way to demonstrate where does the GA103 sits in the lineup. For now, it is only being used by RTX 3080 Ti Laptop GPU, whereas the 3070Ti still relies on a smaller GPU called GA104.
According to the YouTuber, the GA103 GPU measures 496 mm², which means it is 26.5% bigger than GA104 while offering 25% more cores.
We are yet to hear about NVIDIA’s plans for GA103 GPU for desktops. One would expect that some GA103 will make their way RTX 3070+ series at some point in the future. After all, NVIDIA needs to sell chips with partially disabled (non-functional) CUDA cores at some point.
| NVIDIA Ampere Graphics Processors | ||||||
|---|---|---|---|---|---|---|
| VideoCardz.com | GA100 | GA102 | GA103 | GA104 | GA106 | GA107 |
| Picture |  |  |  |  |  |  |
| Architecture | 7nm Ampere | 8nm Ampere | 8nm Ampere | 8nm Ampere | 8nm Ampere | 8nm Ampere |
| Die Size | 826 mm² | 628 mm² | ~496 mm² | 392 mm² | 276 mm² | TBC |
| Transistors | 54.2B | 28.3B | TBC | 17.4B | 12.0B | TBC |
| Streaming MultiProcessors | 128 | 84 | 60 | 48 | 30 | 24 |
| CUDA Cores | 8192 | 10752 | 7680 | 6144 | 3840 | 3072 |
| TMUs | 512 | 336 | 240 | 192 | 120 | 96 |
| ROPs | 192 | 112 | 96 | 96 | 48 | 48 |
| RT Cores | – | 84 | 60 | 48 | 30 | 24 |
| Tensor Cores | 512 | 336 | 240 | 192 | 120 | 96 |
| Memory Bus | 6144-bit | 384-bit | 256-bit | 256-bit | 192-bit | 128-bit |
| Max Mem. Spec | 80GB HBM2e | 24GB GDDR6X | 16GB GDDR6 | 16GB GDDR6X | 12GB GDDR6 | 4GB GDDR6 |
| Best SKUs | A100 Tensor Core | RTX 3090 Ti | RTX 3080 Ti Laptop | RTX 3070 Ti RTX 3080 Laptop | RTX 3060 Laptop | RTX 3050 Ti Laptop |
Furthermore, after months of looking for GA107 GPU pictures, it appears that Olrak managed to find one. This GPU is not even the final retail version, but an engineering sample, hence it carries a different codename. Yet, it finally gave us an opportunity to see the full Ampere GPU family at once. Hello, Ampere.
Source:
Many thanks to ChengJed for the tip!
