The modder claims he could offer this solution to other owners with full warranty coverage
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In response to a commenter asking whether this mod will be covered under PNY’s warranty, he said, “We're a PNY partner. You'll be able to buy a PNY-specific card with a similar modification directly from us with a full warranty.” This mod isn't currently on his website, however. PNY hasn't been great at honoring warranties for the 12VHPWR issue with third-party cables, as covered in this recent story about a third-party cable melting in use , so take the claim of full warranty coverage with a grain of salt.
The 16-pin connector issue plagues many Nvidia graphics cards because they draw high current through what is essentially a 12-pin connector. The four smaller pins are sensors, and the remaining 12 are split between six +12V and ground connections. The connector typically uses high-current-rated 16AWG cables, and in theory, they should handle up to 600W.
Apparently, some cases of these melting connectors are due to poor connections where the pins don't make enough contact, causing high resistance and heat buildup, and uneven current distribution is often a source of issues. This was rarely the case with older multi-8-pin connector setups, as the safety margins were higher. However, graphics cards now draw more current, and Nvidia thought it should run it through fewer wires.
The modder essentially fixed this issue by soldering additional connections to the power rails directly on the RTX 5090’s PCB and routing them to what can only be described as a power distributor. This distributor contains a PCB that the wires connect to and where the two female 8-pin connectors are placed. It is unknown whether the modder designed it himself and whether it contains any other power-delivery or protection components, such as capacitors and fuses.
Modded RTX 5090 ditches 16-pin power for triple 8-pin connectors
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Reference reading
- https://www.tomshardware.com/pc-components/gpus/SPONSORED_LINK_URL
- https://www.tomshardware.com/pc-components/gpus/modder-fixes-melting-rtx-5090-power-connectors-with-custom-distributor-dual-8-pin-mod-peaks-at-just-40c-during-a-48-hour-550w-stress-test#main
- https://www.tomshardware.com/membership
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Informational only. No financial advice. Do your own research.