Power-hungry Nvidia GeForce RTX 4090 or RTX 4090 Ti may require a 1,200 W PSU to offer double Ampere performance

[Redaktion]

Either the Nvidia GeForce RTX 4090 or RTX 4090 Ti is likely to come with a TDP rating of 600 W. If accurate, desktop PC builders would have to look into securing at least a 1,200 W-capable power supply unit (PSU) for maximum efficiency. The "Lovelace" RTX 40 series is expected to launch at the end of 2022.

https://www.notebookcheck.net/Power-hungry-Nvidia-GeForce-RTX-4090-or-RTX-4090-Ti-may-require-a-1-200-W-PSU-to-offer-double-Ampere-performance.593676.0.html

[LL]

So almost double the performance here with possibly double the power requirement: 300 W vs. 600 W (RTX 3090 vs. RTX 4090 or RTX 4090 Ti).

That would mean Nvidia made a bad job. I mean the 4000 series will have a new fabric process/dimension so it is to be expected good improvement in power vs performance arena.

[Faker Shaker]

This makes sense. The next generation GPUs are expected to be made on TSMC 7nm/6nm fabrication technology which is expected to have only 20% greater transistors per unit area. To put things in perspective, when going from Turing to Ampere we had a 80% increase in transistors per unit area.

Also, power efficiency improvements are proportional to the square root of area. So sqrt(1.8) = 1.35 which is about right. Ampere was around 35-40% more power efficient than Turing.

Going from Ampere to Lovelace we will get sqrt (1.20) = 1.09. Only 9% improvement in power efficiency won't be enought to generate a generational improvement in graphics performance. So the only other option is to increase power consumption.

RTX 3080 has 8704 cores and consumes 320 watts. RTX 4090/Ti, if it has 18,432 will have more than double the cores but will consume less than double the power. The RTX 4070 should have comparable performance to 3090 but should manage it around 250-300 watts (lesser than 3090).

[Kolant]

Laptops are dead.

[Will]

The 3080ti and 3090 are actually 350 watts while the 380 is 320 watts. So if true the 4090 or 4090ti will offer the same power as the 3090 and 3080 combined at 70 watts less. Not the best way to get gains but how many people will actually buy those monstrous cards. Hopefully it's the ti version they are speculating  about and the 4070, 4080 and 4090 won't be so extreme.

[Anonymousgg]

This makes sense. The next generation GPUs are expected to be made on TSMC 7nm/6nm fabrication technology

Except nobody expects that. Notebookcheck even has an article about 5nm Lovelace.

notebookcheck.net/NVIDIA-5-nm-Lovelace-AD102-RTX-4080-4090-specs-leak-looks-to-be-a-monster-GPU-with-18-432-CUDA-cores-and-nearly-66-TFLOPs-of-FP32-performance.512254.0.html

wccftech.com/nvidia-spends-big-money-to-acquire-tsmcs-5nm-wafers-for-next-gen-geforce-rtx-40-ada-lovelace-gpus/

[Joe]

Inclusive and Sustainable  :D ;D :)

[IronyTaken]

Calling BS on the wattage requirements.
The cooling required for that much wattage would be absurd.

Been following computer hardware since the early 90s and I've learned over the years to not trust sensational rumors dressed up as news.

Some of the biggest performance jumps in 3d graphics accelerators was during the infancy of the 90s and aside from some major transitions like the move to unified shaders with the release of the 8800GTX or ATIs slam dunk 9700 pro there have not been significant jumps in gen over gen performance. And that is for good reason. Most jumps are around 30% and the rare ones like the 1080ti was around 50 to 60%.

[MystiCult]

i have seen a model of the rtx 4090 being tested, the power hungry Gpu included 2 power connectors, so it draws power directly from the power plug instead of a PSU, which would eliminate the issue of having to go with a high power psu. 

[RobertJasiek]

RTX 4090 TI is being misunderstood. It is a power station generating energy on exploding ;(

[jay2051]

 im buying the RTX 4090TI so all your MFers with bot apps better not even think about buying the whole warehouse of these