GamingGPUs

NVIDIA has Significantly Beefed up the RTX 4090 to Tackle AMD’s Radeon RX 7900 XT: No Longer a Simple Ampere Refresh [Report]

NVIDIA seems to have taken notice of AMD’s ambitious plans with its next-gen RDNA 3 graphics architecture, and devised plans of tackling it as well. Team Red is planning to adopt a chiplet design with up to seven dies for the Radeon RX 7900 XT (Navi 31), allowing for a remarkable 2-2.5x increase in raw graphics performance. As reported a short while back, AMD has significantly changed the WGP and the number of active threads per WGP with RDNA 3.

NVIDIA, on the other hand, had a simple and straightforward plan: Take Ampere, port it to TSMC’s 5nm process, and cram as many transistors as possible onto an 800+mm^2 die. That design seems to have been scrapped and replaced with a much more potent one. According to Kopite7kimi, the foremost source on NVIDIA’s future GPU, the AD102 core has been updated and can no longer be compared to the original die.

GPU GA102 AD102 RTX 4090 AD103 RTX 4080 RTX 4070 Ti (AD104) RTX 4070
Arch Ampere Ada Lovelace Ada Lovelace Ada Lovelace
Process Sam 8nm LPP TSMC 5nm TSMC 5nm TSMC 5nm
GPC 7 12 11 7 7 5 5
TPC 42 72 64 42 40 30 30
SMs 84 144 128 84 80 60 60
Shaders 10,752 18,432 16,384 10,752 9,728 7,680 7,680
TP 37.6 ~100 TFLOPs? 83 TFLOPs ~50 TFLOPs 47 TFLOPs? ~35 TFLOPs 35 TFLOPs?
Memory 24GB GDDR6X 48GB GDDR6X 24GB GDDR6X 16GB GDDR6X 12GB GDDR6X
L2 Cache 6MB 96MB 72MB 64MB 48MB
Bus Width 384-bit 384-bit 256-bit 192-bit
TGP 350W 600W 450W 450W 285-340W 300W 285W
Launch Sep 2020 Sept 22? Sept 22? Q1 2023?

It’s unclear what part of the Lovelace architecture has been updated, but you can now expect the RTX 4090 and the Radeon RX 7900 XT to offer roughly the same level of performance. Recent rumors predict an incredible performance target of 100 TFLOPs for the two flagships. This will be achieved using a combination of increased core and boost clocks with unreasonably high TGPs to boot.

Previous coverage:

NVIDIA’s GeForce RTX 4090 is going to come with 24GB of 24Gbps GDDR6X memory paired with the AD102-300 die and a TGP of 600W. This scoop was shared by @kopite7kimi, one of the most reliable sources on NVIDIA’s GPUs. According to Kimi, the RTX 4080 and 4090 will be based on the AD102 die and 24Gbps GDDR6X memory with the latter featuring a cutdown bus and a few SMs disabled.

The GeForce RTX 4080 is expected to feature 20GB of GDDR6X memory across a 320-bit bus. This GPU will feature around 14,000 FP32 cores, a notable cut from the 15-16K shaders on the RTX 4090. The latter will be paired with a 384-bit bus instead. As for the RTX 4070, we’re looking at 12GB of GDDR6X memory across a 256-bit bus. It will be based on the AD104-400 die and pack up to 10,000 FP32 cores. Finally, the RTX 4070 and 4080 will have a TGP of 400W and 500W, respectively.

Areej Syed

Processors, PC gaming, and the past. I have been writing about computer hardware for over seven years with more than 5000 published articles. Started off during engineering college and haven't stopped since. Mass Effect, Dragon Age, Divinity, Torment, Baldur's Gate and so much more... Contact: areejs12@hardwaretimes.com.
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