Undervolt GPU: The Complete Guide for a Cooler and Quieter Card

Is your graphics card running hot, its fans spinning wildly during gameplay, or do you simply want to reduce your PC's power consumption? Undervolting is one of the most cost-effective optimizations available: by slightly lowering the GPU's supply voltage, you reduce heat and noise, most often without losing performance—and sometimes even gaining it.

This tutorial guides you step-by-step with MSI Afterburner, the free reference tool compatible with NVIDIA cards (RTX 3050, 5060, 5060 Ti, 5070...), and the equivalent method for AMD. No advanced skills are required, and the process is reversible at any time.

Why undervolt your graphics card?

Manufacturers apply a deliberately generous factory voltage to guarantee the stability of 100% of the chips produced. However, each chip is different: yours will likely operate at the same frequency with a lower voltage. The tangible benefits are:

• Lower temperatures: typically 5 to 10°C less under load.
• Less noise: slower-spinning fans mean a quieter PC.
• Reduced power consumption: around 10 to 20% fewer watts depending on the card.
• Stable, or even better, performance: a cooler card maintains its boost frequencies for longer.

Is it risky? No: lowering the voltage cannot damage the hardware. At worst, an overly aggressive undervolt will cause a game or driver crash—you simply need to slightly increase the voltage. Everything is reversible with one click.

Step 1: Prepare the tools

• MSI Afterburner: Download it from the official MSI website (free, works with all card brands).
• A monitoring tool: Afterburner already includes temperature, frequency, and voltage graphs.
• A stress test: a demanding game in windowed mode, a game's built-in benchmark (Cyberpunk 2077 for example), or 3DMark.

Before you begin, note your baseline values: launch your usual game for 10 minutes and record the GPU temperature, average frequency, and voltage ("Voltage" column in the monitoring).

Step 2: Open the frequency/voltage curve editor

In MSI Afterburner, press Ctrl + F to open the curve editor. This graph shows the frequency (vertical axis) your GPU achieves for each voltage step (horizontal axis). Undervolting involves telling the card: "reach your target frequency at a lower voltage, and don't go any higher."

The flat-line method

1. Note your card's typical in-game boost frequency (example: 2700 MHz at 1.00 V).
2. On the curve, select the point corresponding to a lower voltage, for example 0.95 V.
3. Raise this point to the target frequency (the 2700 MHz from the example), then press L to lock this step, or flatten the curve beyond this point (all subsequent points at the same frequency or below).
4. Click the ✓ checkmark in Afterburner to apply.

Result: the card reaches the same frequency as before, but never exceeds 0.95 V instead of going up to 1.05 V or more.

Step 3: Test stability

This is the most important step. Run 20 to 30 minutes of demanding gameplay or a looped benchmark, and monitor:

• No game or driver crashes (black screen, return to desktop).
• No visual artifacts: flickering, colored pixels, abnormal textures.
• Temperature and frequency: the frequency should remain stable at the target value.

If it crashes: increase the voltage by one notch (+0.025 V) or lower the target frequency by 50 MHz, then retest. If it's stable: you can try one notch lower (0.925 V, then 0.90 V...) until you find your chip's limit, then go back up one safety notch.

Step 4: Save and automate

Once your setting is validated, save it to an Afterburner profile (floppy disk icon then a number from 1 to 5). Then enable "Apply at Windows startup" and Afterburner's automatic startup. Your undervolt will be applied at each session without intervention.

What about AMD Radeon?

AMD cards (like the RX 9070 XT) integrate undervolting directly into the drivers: open AMD Software Adrenalin, go to the Performance tab then Tuning, and gradually lower the "GPU Voltage" in 25 mV increments, testing stability at each step. Same logic, same caution.

Mistakes to avoid

• Going too fast: an unstable undervolt might seem to work then crash after an hour. Test it on several games.
• Forgetting VRAM: don't touch the memory frequency during the undervolting phase; address one parameter at a time.
• Comparing without measuring: always record your before/after values to quantify the actual gain.
• Confusing undervolt with power limit: lowering the power limit also reduces heat, but at the cost of reduced performance. Undervolting, however, preserves the frequency.

Conclusion: a free gain in 30 minutes

Undervolting is the optimization with the best effort/benefit ratio for a gaming PC: half an hour of adjustments for a cooler, quieter, and more energy-efficient machine, without spending a dime. It's particularly useful in summer when ambient temperatures rise.

And if you prefer to start with a healthy, pre-assembled and tested base, take a look at DSGate gaming PCs assembled in France: careful airflow, standard components, and ready-to-use machines—all that's left is the pleasure of fine-tuning.