GoKawiilModder develops auxiliary 8-pin board to fix RTX 5090 connector melting
Reddit user DallasGrave, reportedly affiliated with cooling company Grave PC, detailed a mod that solders a pickup PCB to the RTX 5090's 12VHPWR header and routes power through an added dual eight-pin board, spreading current across three cable sets. The user says a card modified this way ran at 550W for 48 hours with cable temperatures staying under 40°C, and plans to offer the conversion as a paid service with warranty, with a PNY-branded version also in the works.
GoKawiil's interpretation of the reporting above, not reported fact.
The RTX 5090's 12VHPWR connector has been linked to overheating and melting reports, and a third-party fix with warranty support could offer worried owners an alternative to waiting on Nvidia or cable makers. DallasGrave's comment that the 12VHPWR standard was approved for too high a power rating suggests the fix addresses a design limitation rather than just manufacturing defects, though its durability and broader compatibility remain unproven beyond this one test.
- A pickup PCB mod splits GPU power load across three cable sets to cut temperatures
- Test reportedly kept cable temps under 40°C during a 48-hour, 550W full-load run
- Modder plans a paid conversion service with warranty, plus a PNY-branded version
CableMod 12VHPWR Angled Adapter — If you're worried about melting power connectors on your RTX 5090, a quality 12VHPWR adapter like CableMod's angled version helps relieve cable strain and improve seating, which is often a root cause of overheating connectors. It's a simple, affordable way to add peace of mind while more permanent fixes like this PCB mod become mainstream.
See CableMod 12VHPWR Angled Adapter on Amazon → Affiliate link — we may earn a commission on purchases, at no extra cost to you. Product picked by AI based on this article; it is not a tested recommendation.Source: techspot.com — Shawn Knight, 2026-10-05
Published there as: “RTX 5090 modder claims to have solved melting power connectors with auxiliary 8-pin board”
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