RTX 5090 Extreme Overclock Burns Connector During 1200W Stress Test

NVIDIA RTX 5090 connector melting has surfaced again, but this time the reported failure appears linked to extreme overclocking rather than stock hardware usage. Although this particular case stems from overclocking, some users continue to speculate that MSI connectors may be responsible for other melting incidents.

RTX 5090 connector melts during extreme overclock test

A new incident involving the RTX 5090 has been reported, and it centers on a heavily modified setup. According to VideoCardz, an Overclock.net user known as “Vinz” shared details of a melted connector on a Thermal Grizzly WireView monitoring device while testing an ASUS ROG Astral GeForce RTX 5090.

The graphics card was running well beyond factory specifications. The user had applied a shunt modification and flashed an XOC-class BIOS to unlock significantly higher power limits for sustained stress testing during gaming and benchmarks.

Temperature warnings reportedly ignored

During testing, the WireView device repeatedly issued temperature alarms. It reportedly displayed temperatures as high as 124°C on the PSU-to-WireView input side, while the GPU-facing output side remained around 42°C.

The user initially believed the readings were inaccurate because the adapter did not feel excessively hot to the touch, and GPU-side monitoring appeared normal. However, the following day, the connector showed visible burn damage and proved difficult to remove from the WireView unit.

Damage is limited to the monitoring adapter

According to the report, the damage affected only the external connector area on the WireView side. The GPU’s power socket and the PSU connectors reportedly showed no visible signs of damage.

After discovering the issue, the user reverted to the original 4×8-pin to 12VHPWR adapter configuration. Subsequent testing under a reported 1200W load showed temperatures in the low-to-mid 40°C range, suggesting normal behavior once the extreme setup was removed. The user is now considering replacing the WireView due to connector wear.

Extreme modifications raise connector risks

Shunt mods and XOC BIOS firmware significantly raise power limits beyond standard specifications. Such modifications typically void warranties from both GPU manufacturers and accessory makers. Running sustained high loads while ignoring repeated thermal alerts likely increased the risk of connector failure in this case.

Thermal Grizzly describes WireView as a monitoring tool equipped with sensors and alarms. It does not function as a protective device that prevents connector damage. The company also states that its extended warranty does not cover modified GPU configurations.

This is not the only recent RTX 5090-related power issue. A separate report recently detailed a case where an RTX 5090 was allegedly permanently damaged after a second 16-pin connector was added.

Unlike earlier incidents where users questioned connector designs, this latest case involved aggressive hardware modifications that exceeded normal operating conditions. The situation highlights the growing risks tied to extreme overclocking on next-generation high-power GPUs.