MSI has released MSI Afterburner 4.6.7 Beta 2, adding support for its upcoming GeForce RTX 5090 Lightning series and introducing new PSU-level protection features tied to 16-pin (12VHPWR / 12V-2×6) power connectors. The headline addition is integration with MSI's GPU Safeguard+ system, available on select MEG Ai1x00 and MPG Ai1x00TS power supplies. A new PSU.dll plugin enables telemetry monitoring directly inside Afterburner, including voltage, current, power, temperature, efficiency, and fan speed. Supported MPG units can also report per-pin current data for 12VHPWR and 12V-2×6 connectors. If overcurrent or current imbalance is detected on the 16-pin connector, the app will load reduce the GPU power limit (typically to 75% on NVIDIA GPUs, 25% on AMD GPUs) and display an on-screen warning, allowing users to inspect the cable connection. Sound alerts can also be enabled.

Beyond PSU integration, Afterburner 4.6.7 Beta 2 updates the Voltage/Frequency curve editor with zoom and pan controls, adjustable node sizes, and improved curve manipulation with preserved per-point offsets. While adding support for upcoming RTX 5090 Lightning cards in advance is nice, the more notable addition is the monitoring-to-action pipeline that links PSU connector telemetry directly to automatic GPU power reduction in case of a fault.