![]() not cause problems with their graphics cards, resulting in a flood of RMAs) and so took it upon itself to design an adapter that converts 8-pin PCIe connectors to a 12VHPWR, which all AICs are required to include with their custom-design RTX 4090 cards. NVIDIA probably figured out early on when implementing this connector that it cannot rely on adapters by AICs or PSU vendors to perform reliably (i.e. ![]() The 12VHPWR connector is a new standard, which means most PSUs in the market lack it, much in the same way as PSUs some 17 years ago lacked PCIe power connectors and graphics cards included 4-pin Molex-to-PCIe adapters. Update Oct 26th: There are multiple updates to the story. Attempting to "wrestle" with the connector, and somehow bending it to your desired shape, will cause improper contacts, which pose a fire-hazard. Combine this with the already tall RTX 4090 graphics cards, and you have yourself a power connector that's impractical for most standard-width mid-tower cases (chassis), with no room for cable-management. This ensures reduced pressure on the contacts in the connector. It comes with a pretty exhaustive set of dos and don'ts the latter are more relevant: apparently, you should not try to arm-wrestle with an 12VHPWR connector: do not attempt to bend the cable horizontally or vertically close to the connector, but leave a distance of at least 3.5 cm (1.37-inch). For starters, most custom RTX 4090 graphics cards have their PCBs being only two-thirds of the actual card length, which puts the power connector closer to the middle of the graphics card, making it aesthetically unappealing, but then there's a bigger problem, as uncovered by Buildzoid of Actually Hardcore Overclocking, an expert with PC hardware power-delivery designs.ĬableMod, a company that specializes in custom modular-PSU cables targeting the case-modding community and PC enthusiasts, has designed a custom 12VHPWR cable that plugs into multiple 12 V output points on a modular PSU, converting them to a 16-pin 12VHPWR. ![]() Normally, it should make your life easier as it condenses multiple 8-pin PCIe power connectors into one neat little connector but in reality the connector is proving to be quite impractical. This tiny connector is capable of delivering 600 W of power continuously, and briefly take 200% excursions (spikes). Despite sticking with PCI-Express Gen 4 as its host interface, the NVIDIA GeForce RTX 4090 "Ada" graphics card standardizes the new 12+4 pin ATX 12VHPWR power connector, even across custom-designs by NVIDIA's add-in card (AIC) partners. ![]()
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