8-pin 3-pin transformer required for 450 watts

8-pin 3-pin transformer required for 450 watts

From Oliver Jaeger
The main GPU, the Geforce RTX 3090 Ti, due out next week, has a TDP of 450W, so it needs an 8-pin 3-pin power connector to be able to meet that power consumption. That’s why there is a 3×8 to 16-pin PCI-E 5.0 adapter for the GPU.

Nvidia’s new flagship, the Geforce RTX 3090 Ti, which will be introduced on March 29, will have a 16-pin PCI-E 5.0 connector and feature a TDP of 450 watts. The non-Ti variant released 1.5 years ago was 100 watts less, so a 2 x 8 to 12-pin adapter can handle up to 300 watts, including graphics card access to 75 watts via the PCI Express interface.

8-pin adapter for RTX 3090 Ti

According to Videocardz, with a TDP of 450W, a 3-pin 8-pin power cable or original implementation of 12VHPWR (12 + 4-pin PCI-E 5.0) is required for the Geforce RTX 3090 Ti. An original cable should not be delivered in the period when the Geforce RTX 3090 Ti is already being offered, so a 3 x 8 to 16-pin PCI-E 5.0 adapter is required. That supplies 450 watts to the Geforce RTX 3090 Ti alone, and with an additional 75 watts via the PCI Express interface, you’ll get 525 watts. Thus, builds dedicated to the Geforce RTX 3090 Ti are also expected, which can reach a maximum TDP of 500W.


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The 16-pin connector is virtually identical to the 12-pin connector. The difference is in the four additional pins below, which make twelve 12+4 and thus 16 pins. It is likely that Nvidia’s next-generation Ada graphics cards, which will be launched as representatives of the Geforce RTX 4000 series, will also use a 16-pin PCI-E 5.0 connector. The Geforce RTX 3090 Ti should also be Nvidia’s last Ampere-series GPU and at the same time the first with fast 21GDDR6X memory and a new power connection.

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Source: via Videocardz

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