GamingGPUsNews

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.

GPUGA102AD102RTX 4090AD103RTX 4080AD104RTX 4070
ArchAmpereAda LovelaceAda LovelaceAda Lovelace
ProcessSam 8nm LPPTSMC 5nmTSMC 5nmTSMC 5nm
GPC712117755
TPC42726442403030
SMs8414412884806060
Shaders10,75218,43216,38410,7529,7287,6807,680
TP37.6~100 TFLOPs?83 TFLOPs~50 TFLOPs47 TFLOPs?~35 TFLOPs35 TFLOPs?
Memory24GB GDDR6X48GB GDDR6X24GB GDDR6X16GB GDDR6X
12GB GDDR6X
L2 Cache6MB96MB72MB64MB48MB
Bus Width384-bit384-bit256-bit160/192-bit
TGP350W600W450W450W285-340W300W285W
LaunchSep 2020Sept 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

Computer hardware enthusiast, PC gamer, and almost an engineer. Former co-founder of Techquila (2017-2019), a fairly successful tech outlet. Been working on Hardware Times since 2019, an outlet dedicated to computer hardware and its applications.
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