GDDR6X VRAM memory junction overheating (105C - 110C thermal throttle)
Micron GDDR6X memory modules on high-end graphics cards (RTX 3080/3090/4080/4090) reach critical junction limits due to deteriorated, oily, or poorly compressed factory thermal pads.
Internal desktop parts run on harmless 12V DC voltage and cannot shock you. Simply unplug the wall power cable first, then touch the unpainted metal case frame to ground static electricity.
Common Symptoms & Tells
- HWInfo64 reports 'Memory Temperature' or ' Memory Junction' pegged at 106C - 110C
- Games stutter violently after 10 minutes as core clocks down to protect memory
- core temp is cool (65C) but fans spin at 100% emergency speed
Interactive Fix Checklist
0 of 5 steps completedSafety power-off and discharge
Shut down the PC, turn off the power supply rocker switch (O), and unplug the AC power cord from the wall outlet. Press the front power button once while unplugged to discharge residual capacitor energy before touching any internal components.
Monitor GPU Memory Junction Temperature in HWInfo64
Download HWInfo64, launch in Sensors-only mode, launch a demanding game, and observe ' Memory Junction Temperature'. Maximum operating limit before thermal throttling is 105C.
Cap in-game framerates and lower memory intensive settings
Cap your framerate to your monitor refresh rate (e.g. 144 FPS) using NVIDIA Control Panel Max Frame Rate, and lower Ray Tracing and texture resolution to reduce VRAM bus utilization.
Add an intake fan blowing directly across GPU backplate
Position a 120mm bottom or side chassis fan pushing fresh cool air directly across the graphics card rear backplate to pull heat away from rear-mounted VRAM packages.
Replace factory VRAM thermal pads with high-performance pads
Disassemble the heatsink and replace oily stock thermal pads with high-conductivity pads (like Gelid GP-Ultimate or Thermalright Odyssey) with the exact millimeter thickness specified for your model.
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