Wednesday, September 14th 2022
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NVIDIA RTX 4080 12GB and 16GB Based on Different Chips, Vastly Different Shader Counts
When we first got news about NVIDIA's upcoming GeForce RTX 4080 "Ada" coming in 12 GB and 16 GB variants, we knew there was more setting the two apart than just memory size and memory bus-width. Turns out there's a lot more. According to detailed specifications leaked to the web, while the 16 GB variant of the RTX 4080 is based on the same AD103, the second largest chip after the AD102; the 12 GB RTX 4080 is based on the smaller AD104 chip which has a physically narrower memory bus.
It looks like NVIDIA is debuting the RTX 40-series with at least three models—RTX 4090 24 GB, RTX 4080 16 GB, and RTX 4080 12 GB. The RTX 4090 is the top-dog part, with the ASIC code "AD102-300-xx." It's endowed with 16,384 CUDA cores, a boost frequency of up to 2.52 GHz, 24 GB of 21 Gbps GDDR6X memory, and a typical graphics power (TGP) of 450 W, which is "configurable" up to 600 W. The RTX 4080 16 GB is based on the AD103-300-xx" comes with 9,728 CUDA cores, a boost frequency of 2.50 GHz, and 16 GB of 23 Gbps GDDR6X memory across a narrower memory bus than the one the RTX 4090 comes with. This card reportedly has a 340 W TGP configurable up to 516 W.The GeForce RTX 4090 12 GB is positioned a notch below its 16 GB namesake, but is based on the smaller AD104 chip, with 7,680 CUDA cores running at speeds of up to 2.61 GHz, 12 GB of 21 Gbps GDDR6X memory, and a TGP of 285 W that's configurable up to 366 W. It's interesting how the leak includes not just TGP, but also maximum configurable TGP. The various board partners will utilize the latter as their power limits to achieve overclocked speeds. Even the NVIDIA Founders Edition board is technically "custom design," and so it could feature higher-than-stock TGP.
Source:
VideoCardz
It looks like NVIDIA is debuting the RTX 40-series with at least three models—RTX 4090 24 GB, RTX 4080 16 GB, and RTX 4080 12 GB. The RTX 4090 is the top-dog part, with the ASIC code "AD102-300-xx." It's endowed with 16,384 CUDA cores, a boost frequency of up to 2.52 GHz, 24 GB of 21 Gbps GDDR6X memory, and a typical graphics power (TGP) of 450 W, which is "configurable" up to 600 W. The RTX 4080 16 GB is based on the AD103-300-xx" comes with 9,728 CUDA cores, a boost frequency of 2.50 GHz, and 16 GB of 23 Gbps GDDR6X memory across a narrower memory bus than the one the RTX 4090 comes with. This card reportedly has a 340 W TGP configurable up to 516 W.The GeForce RTX 4090 12 GB is positioned a notch below its 16 GB namesake, but is based on the smaller AD104 chip, with 7,680 CUDA cores running at speeds of up to 2.61 GHz, 12 GB of 21 Gbps GDDR6X memory, and a TGP of 285 W that's configurable up to 366 W. It's interesting how the leak includes not just TGP, but also maximum configurable TGP. The various board partners will utilize the latter as their power limits to achieve overclocked speeds. Even the NVIDIA Founders Edition board is technically "custom design," and so it could feature higher-than-stock TGP.
66 Comments on NVIDIA RTX 4080 12GB and 16GB Based on Different Chips, Vastly Different Shader Counts
So yeah, they're not alone though but they do it best.
They'll just be different cards with the same name on the box. It won't matter the minute you install the card in your system and throw away the box.
("RTX 4080 GS" or RTX 4080 MX".) Anyway, we'll once they are out if they are really GPU of the same caliber deserving of sharing the same name. (Maybe time to bring back :"RTX 4080 GS" or RTX 4080 MX".)
It would be so cool if they followed up by showing a comically large 4080 and 4090 in honor of that April 1 video. I would have so much respect for them. :D
As for the article, it looks like a rebrand of the 4070 to the 4080 12 GB. If they sell that for $700, I will be skipping this generation. No point in upgrading for anything less than 30%. I usually prefer 50%. And my 2070 SUPER to 3080 upgrade gave me 80% in 4K.
With the buss width and shaders these are not going to perform the same at all, like the 16GB is looking like a Ti version comparatively.