GeForce RTX 3090 Ti graphics cards come with 3×8 pin to PCIe Gen5 (16 pin) power adapters

PCIe Gen5 cable adapter to supply 450W of power

The upcoming flagship RTX 3090 Ti graphics card will require special power cable adapters.

According to leaks, the NVIDIA GeForce RTX 3090 Ti has a TDP of 450W. With such high input power, even two 8-pin PCIe power supplies are not enough, such a configuration can only support 300W of power.

This is a major difference between the RTX 3090 and RTX 3090 Ti cards. The Founders Edition of the older flagship SKU released in 2020 includes a 12-pin connector (essentially the same cable but without the “sense” pins). It comes with a dual 8-pin to 12-pin power adapter. This is obviously sufficient for the 350W TDP as the card still has access to 75W of power through the PCIe interface.

3x 8 pin to PCIe Gen5 power cable, Source: VideoCardz

The RTX 3090 Ti with a higher TDP of 100W will need three 8-pin power cables or a native PCIe Gen5 12VHPWR implementation (12+4 or 16 pin). However, power supplies with the native cable won’t be available in time for the RTX 3090 Ti, which launches on March 29. For this reason, the adapter is necessary.

The adapter will provide 450W of power alone and a total of 525W with the PCIe interface. It should be expected that a number of custom RTX 3090 TI designs will hit 500W maximum TDP.

GALAX RTX 3090 Ti with PCIe Gen5 power cable

The RTX 3090 Ti features a GA102-350 GPU with all 10752 CUDA cores enabled. This is NVIDIA’s first RTX model with 21 Gbps GDDR6X memory and a new power connector. The RTX 3090 Ti is expected to be Ampere’s last flagship SKU to launch before NVIDIA launches its Ada GPUs later this year.

NVIDIA GeForce RTX 30 High-End SKU Specifications
video cardz RTX-3090Ti RTX-3090 RTX-3080Ti RTX 3080 (10 GB)
GPUs GA102-350 GA102-300 GA102-225 GA102-200
GPU clusters
RT Cores
Basic Clock
Boost clock
Memory clock
MSRP To confirm
Release date March 29, 2022 September 24, 2020 June 3, 2021 September 17, 2020