NVIDIA RTX 4090 to Feature a TGP of up to 660W, RTX 4080 May Draw up to 516W on AIB Models [Rumor]

The specifications of NVIDIA’s top-end RTX 40 series graphics card have braced the web yet again in more detail than ever (courtesy: Videocardz). Turns out that only the RTX 4090 and the two variants of the RTX 4080 will be released this year. The announcement should come on the 20th of September during the chipmaker’s GTC 2022 keynote.

The GeForce RTX 4090 will be based on AD102-300 GPU and feature 16,384 FP32 CUDA cores across 128 Steaming Multiprocessors (SMs) and 11 Graphics Processing Clusters (GPCs). The GPU core will peak out at 2,520MHz alongside 24GB of 21Gbps GDDR6X memory paired with a 384-bit bus. The memory subsystem will be complemented by a large 72MB L2 cache, with a TGP of 450W and an upper limit of 660W. The Founders Edition (and base AIB models) should have a power cap of 450-500W while the factory overclocked AIO models might reach the 660W mark.

GPUGA102AD102RTX 4090AD103RTX 4080RTX 4070 Ti (AD104)RTX 4070
ArchAmpereAda LovelaceAda LovelaceAda Lovelace
ProcessSam 8nm LPPTSMC 5nmTSMC 5nmTSMC 5nm
TP37.6~100 TFLOPs?83 TFLOPs~50 TFLOPs47 TFLOPs?~35 TFLOPs35 TFLOPs?
L2 Cache6MB96MB72MB64MB48MB
Bus Width384-bit384-bit256-bit192-bit
LaunchSep 2020Sept 22?Sept 22?Q1 2023?

The GeForce RTX 4080 will be the more accessible Lovelace SKU coming in two variants: 12GB and 16GB. The former will be based on the AD104-400 core with 7,680 shaders across 60 SMs and 5 GPCs. The bus width is supposedly going to be set at 192 or 256-bit. The graphics core will peak out at 2,610MHz and the memory will run at 21Gbps GDDR6X. The default TGP is said to be 285W with a maximum of 366W on custom AIB variants. This may very well be the RTX 4070 or the 4070 Ti as we’re looking at an entirely different die.

The 16GB variant of the RTX 4080 will leverage the AD103-300 GPU with 9,728 cores pulsating at 2,505MHz alongside 23Gbps GDDR6X memory modules. Unlike its 12GB sibling, we’re looking at a bus width of 256-bit or higher. It’ll have a default TGP of 340W, raisable to 516W on the over-engineered board partner designs.

The GeForce RTX 4070 is somewhere in the air for the time being and is unlikely to be launched this year. We might see a sneak peek or reveal later this year but the official announcement should come at CES 2023 in January.

Areej Syed

Processors, PC gaming, and the past. I have written about computer hardware for over seven years with over 5000 published articles. I started during engineering college and haven't stopped since. On the side, I play RPGs like Baldur's Gate, Dragon Age, Mass Effect, Divinity, and Fallout. Contact:
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