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NVIDIA RTX 4090 to Feature 24GB GDDR6X, RTX 4080 with 16GB GDDR6X, RTX 4070 with 12GB 18Gbps GDDR6 and 300W TGP [Report]
Well-reputed tipster @kopite7kimi has provided an update on the specifications of NVIDIA’s upcoming RTX 40 series graphics cards. It looks like the higher-end SKUs will be getting a healthy memory upgrade albeit still lower than AMD’s Radeon RX 6800 XT/6900 XT. The RTX 4090 will come with 24GB of 21Gbps GDDR6X memory paired with a 384-bit bus, much like the 3090 Ti. The shader count is expected to be somewhere between 15,000 and 18,000. This compute monster will draw up to 600W of power under load (TGP).
The RTX 4080 which will be sought after by most enthusiasts should feature 16GB of GDDR6X (20 Gbps?) or 18Gbps GDDR6 memory. In comparison, the RTX 3080 comes with a 10GB/12GB GDDR6X memory buffer. It’s important to remember that the faster GDDR6 modules from Micron are almost on par with GDDR6X so there’s a good chance that the latter will be limited to the 4090 and the 4080 Ti. The RTX 4080 should offer 10,752 FP32 cores, a 256-bit bus, and a TGP of 600W. Expect high core clocks to make up for the lower bandwidth.
GPU TU102 GA102 AD102 (RTX 4090) AD102 (RTX 4080) AD104 (RTX 4070) Arch Turing Ampere Ada Lovelace Ada Lovelace Ada Lovelace Process TSMC 12nm Sam 8nm LPP TSMC 5nm TSMC 5nm TSMC 5nm GPC 6 7 12 7 5 TPC 36 42 72 42 30 SMs 72 84 144 84 60 Shaders 4,608 10,752 18,432 10,752 7,680 TP 16.1 37.6 ~90 TFLOPs? ~50 TFLOPs ~35 TFLOPs Memory 11GB GDDR6 24GB GDDR6X 24GB GDDR6X 16GB GDDR6 16GB GDDR6 L2 Cache 6MB 6MB 96MB 64MB 48MB Bus Width 384-bit 384-bit 384-bit 256-bit 256-bit TGP 250W 350W 600W 600W 300W? Launch Sep 2018 Sep 2020 Aug-Sep 2022 Q4 2022 Q4 2022
Finally, we have the RTX 4070 which will be based on the AD104 die. This particular SKU along with the RTX 4060 will be the bestsellers of Lovelace. NVIDIA has paired the 4070 with 12GB of 18Gbps GDDR6 memory across a 256-bit bus. The shader count is pegged at 7,680, and the TGP will likely max out at 300W. The RTX 3070 features 8GB of GDDR6 memory across a 256-bit bus along with 5,888 shaders.
Só acho q o TBP da 4080 está errado. Ainda mais q ela não usará GDDR6X. Acredito q ficará em 400w a 450w chutando alto!