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

Published: 24th Mar 2022, 09:56 GMT   Comments

PCIe Gen5 cable adapter to feed 450W of power

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

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

This is a major difference between the RTX 3090 and RTX 3090 Ti cards. The Founders Edition of the former flagship SKU released in 2020 features a 12-pin connector (basically the same cable but without the ‘sense’ pins). It shipped with dual 8-pin to 12-pin power adapter. This is obviously enough for the 350W TDP because 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 100W higher TDP will need three 8-pin power cables or a native implementation of the 12VHPWR (12+4 or 16-pin) PCIe Gen5. However, the power supplies with the native cable will not be available in time for RTX 3090 Ti, which launches on March 29th. For this reason, the adapter is required.

The adapter will provide 450W of power alone and a total of 525W with the PCIe interface. One should expect a number of custom RTX 3090 TI designs to reach 500W of 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 new power connector. The RTX 3090 Ti should be the last flagship Ampere SKUs to launch before NVIDIA unleashes its Ada GPUs later this year.

NVIDIA GeForce RTX 30 High-End SKU Specifications
VideoCardzRTX 3090 TiRTX 3090RTX 3080 TiRTX 3080 (10GB)
Picture
GPUGA102-350GA102-300GA102-225GA102-200
GPU Clusters
 
84
 
82
 
80
 
68
CUDAs
 
10752
 
10496
 
10240
 
8704
RT Cores
 
84
 
82
 
80
 
68
Tensors/TMUs
 
336
 
328
 
320
 
272
Base Clock
 
1560 MHz
 
1395 MHz
 
1365 MHz
 
1440 MHz
Boost Clock
 
1860 MHz
 
1695 MHz
 
1665 MHz
 
1710 MHz
Memory
 
24 GB G6X
 
24 GB G6X
 
12 GB G6X
 
10 GB G6X
Bus
 
384-bit
 
384-bit
 
384-bit
 
320-bit
Memory Clock
 
21 Gbps
 
19.5 Gbps
 
19 Gbps
 
19 Gbps
Bandwidth
 
1008 GB/s
 
936 GB/s
 
912 GB/s
 
760 GB/s
TDP
 
450W
 
350W
 
350W
 
320W
MSRPTBC
 
$1,499
 
$1,199
 
$699
Release DateMarch 29, 2022September 24th, 2020June 3rd, 2021September 17th, 2020



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