PCIe 5.0 external power supply is up to 600W, Will be used in the next generation GPU

by ddos ·

Last week, there was news that Nvidia’s GeForce RTX 3090 Ti launched early next year will use GA102-350 cores and have complete specifications, that is, 10752 stream processors, equipped with 24GB of GDDR6X video memory, the rate has reached a higher 21 Gbps, and the new 2GB module is used to replace the existing 1GB module. Even more impressive is the 450W. For this reason, the new 16Pin external power interface is likely to replace the previous 12Pin interface.

Recently, Igor’sLAB received design information for the new power supply interface and confirmed that there will be a new standard, which may be applicable to all new graphics cards in 2022.

This 16Pin external power interface has a total of 16 channels, including 12 for power supply and 4 for communication, but this is not a Micro-Fit Molex standard, and a brand new design called PCI-SIG 12VHPWR H+. In its standard definition, the spacing is smaller than that of the existing external power interface, from 4.2 mm to 3 mm, and the width of the entire interface is 18.85 mm. Although the size is not small, it is still smaller than the dual 8Pin or three 8Pin configurations, which will simplify the circuit and PCB design and save more space.

At present, relevant manufacturers have listed the specifications of this 16Pin external power interface, such as Amphenol. According to the introduction, the maximum current of each pin is 9.2A, which means that the total current reaches 55.2A and the theoretical maximum power reaches 662W, but the specification is limited to 600W.
It is understood that the first graphics card with a 16Pin external power interface will be NVIDIA GeForce RTX 3090 Ti. There is no news about other graphics cards. This probably means that the 12Pin external power interface used by Nvidia on the GeForce RTX 30 series will be eliminated.

The detailed specifications are shown in the figure below:

PCIe 5.0 PCIe 5.0

Tags: PCIe 5.0