NVIDIA GeForce RTX 40 Series PCIe Gen 5 power adapters have a limited plug and disconnect life of 30 cycles

NVIDIA’s GeForce RTX 40 series graphics cards will use an all-new PCIe Gen 5 power adapter to supplement their higher power needs. While only modern PSUs compatible with the new ATX 3.0 standard can offer direct, single-pin routing, users with older PSUs will need to use an adapter featuring up to four 8-pin connectors leading to a single Gen 5 cable.

NVIDIA GeForce RTX 40 graphics cards will need a new PCIe Gen 5 cable after 30 plug and play cycles

Modernization: We have confirmed with NVIDIA that the 30-cycle specifications for the 16-pin connector are the same as they were more than 20 years ago. There are the same 30-cycle specs for the standard 8-pin PCIe/ATX connector (also known as a proper micro Molex). The same connector is used by AMD and all other GPU vendors as well, so all of these cards also share a 30-cycle lifespan. In short, nothing has changed for the GPU RTX 40 series.

The new information comes from ZOTAC which has listed on its site the service life of a single PCIe Gen 5 adapter cable. According to the manufacturer, the company suggested replacing the PCIe gen 5 adapter that includes a 4×8-Pin connector to a 1x 16-Pin after 30 connections and disconnects. This means that the user can, at most, only plug and unplug the cable for 30 times before the “limited” service life expires.

ZOTAC proposes a limited disconnect/connect service life for the new PCIe Gen 5 power cable for NVIDIA’s GeForce RTX 40 Series. (Image credits: Videocardz)

Next-gen NVIDIA GeForce RTX 40 series graphics cards including the RTX 4090 and TX 4080 will be bundled with these cables, however, each package will only include one cable, so enthusiasts who want to separate their hardware often and try new things will have to be careful because you You will need new cables every time you run out of the 30 life cycle.

A PCIe Gen 5 cable can provide up to 600 watts of power, but as NVIDIA reports, the fourth 8-pin cable is completely optional and can be used to provide even more overclocking. The GPUs can be set to 3GHz + clock speeds with overclocking as officially confirmed by the company.

Every GeForce RTX 40 Series Founders Edition graphics card reduces cable clutter by taking advantage of new standard GPU power inputs for next-generation ATX 3.0 power supplies, and a 16-pin PCIe Gen-5 connector. This allows you to power a GeForce RTX 40 graphics card Series cards with just one cable, improving the aesthetics of your device.If you’re using a previous generation power supply, an adapter cable is included in the box, allowing you to connect three 8-pin power connectors, with an optional fourth connector for even more overclocking. ATX 3.0 power supplies coming in October from ASUS, Cooler Master, FSP, Gigabyte, iBuyPower, MSI, Silverstone, and ThermalTake, with more models coming.”


The problem with low life cycles stems from the fact that PCIe Gen 5 (12VHPWR) cable is very brittle to bends and with thermal discrepancies being somewhat of a concern as hinted by PCI-SIG, prolonged use beyond advertised life cycles may lead to damage cables permanently.

PCI-SIG’s internal investigation into the issue (Image credits: GamersNexus):

This should be checked once the card is released but for new owners or those who plug their GPU into the PC once and never take it out again, this shouldn’t be a big concern. Some PSU companies also make their cables with quality components but there is no way to tell how good or bad a 12VHPWR cable is without removing the sleeve.

News source: Videocardz

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