NVIDIA GeForce RTX 4090: Alleged specifications surface with 16,128 CUDA cores, a 450 W TGP, over a 1 TB/s memory bandwidth and not all the AD102 die

@kopite7kimi has provided new information about the GeForce RTX 4090, rumoured to be NVIDIA's flagship RTX 40 series graphics card. According to the leaker, the RTX 4090 should provide 16,128 CUDA cores, which corresponds to 126 Streaming Multiprocessors (SMs). For reference, earlier rumours put the RTX 4090 at 140-142 SMs, a few shy of the full AD102 die. Purportedly, the full AD102 die has 144 SMs; it is unclear how many NVIDIA will enable for the RTX 4090 Ti.

Meanwhile, @kopite7kimi expects NVIDIA to utilise the AD102-300 GPU for the RTX 4090, which it will base on a TSMC N4 node. Moreover, the leaker believes that NVIDIA will also include 24 GB of GDDR6X VRAM clocked at 21 Gbps mated to a 384-bit memory bus. As VideoCardz notes, this would result in a memory bandwidth that exceeds 1 TB/s.

Furthermore, @kopite7kimi believes that the RTX 4090 has a 450 W TDP, not 600 W. Reputedly, the RTX 4090 could deliver 2x the performance of an RTX 3090 too, although it remains unclear in what workloads to which this would apply. Allegedly, NVIDIA could unveil the RTX 4090 in 'mid July', presumably alongside the RTX 4070 and RTX 4080. Availability is unknown at this stage, though.

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