A report published September 29, 2026, described a modified GALAX GeForce RTX 5080 tested with a custom adapter for two PCIe 8-pin connectors in place of its intended 12V-2×6 connection. The two branches drew 194.5 W and 219.2 W, both above the cited 150 W rating per connector.
One GALAX RTX 5080 used a custom two-connector adapter
The experiment replaced the card’s intended 12V-2×6 power connection with an adapter featuring two conventional PCIe 8-pin sockets. PCAT equipment measured power, and thermal imaging recorded connector temperatures.
The reported setup ran FurMark with a 111% power limit and adjustments to GPU and memory frequencies. These details describe that particular test, not a standard configuration for RTX 5080 cards.
The two 8-pin branches drew 194.5 W and 219.2 W
The first branch was reported at 194.5 W and the second at 219.2 W. The connectors reached approximately 50–52 °C during the test. The cited rating for each PCIe 8-pin connector was 150 W, so both measured branch readings exceeded that reference.
The temperature reading is not a safety verdict
The figures describe one modified card operating under the reported test conditions. A single run is not a general safety qualification, and it does not establish that two 8-pin connectors are safer than 12V-2×6 or reliable over long-term use.
RTX 5080 cable compatibility depends on the PSU
A direct 12V-2×6 cable can replace a card adapter in a particular setup only when it is compatible with the exact power supply. The custom two-connector adapter used in this experiment is not a general cable recommendation.
