NVIDIA Testing RTX 4090 Ti with 48GB GDDR6X Memory and 900W Power Draw [Rumor]

Till now, most reports have claimed that the top-end AD102 die powering the RTX 4090 will feature up to 18,432 cores across 84 SMs and 7 GPCs paired with 24GB of GDDR6X memory and 96MB of L2 cache. This monster GPU was expected to have a TGP of 600W+, nearly 2x more than the RTX 3090’s 350W. The latest rumor from Twitter claims that NVIDIA is testing an even more powerful SKU based on the AD102. Although the shader count is unchanged at 18,432, the memory has been doubled to 48GB and the boost clock has been raised by a few hundred MHz. To top it off, the maximum boost power consumption is set to a whopping 900W.

Now, it’s important to note that this GPU only exists as a test product (or on paper) at the moment, and it’s unclear whether it’ll ever come to the consumer market. If I had to bet, I’d say that NVIDIA is keeping a backup option in place in case the Radeon RX 7900 XT ends up being faster than the RTX 4090 by a large margin. This could become either the RTX 4090 Ti or the next Titan.

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?

Last but not the least, a 900W TGP seems highly unlikely. If NVIDIA does decide to bring this SKU to the gaming market, the power consumption will have to be optimized. You can expect a peak boost consumption of 700-750W, but not more. The RTX 4090, on the other hand, should have a TGP of 600W, 100W less than the H100, and 250W more than the RTX 3090.


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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