Hello there,
For a cautious undervolt on the 4070 Super TUF, a solid initial setting is 0.9V at approximately 2700MHz, striking a balance between stability while minimizing heat and noise without affecting performance. To configure this, utilize MSI Afterburner and access the Voltage/Frequency Curve Editor by pressing Ctrl+F. Locate the 0.9V point on the curve, move it to your preferred clock speed, and flatten the curve past that point. Evaluate the configuration using benchmarks such as Heaven or Time Spy, or by playing your regular games to confirm stability. If it fails or lacks stability, attempt to gently reduce the clock speed or raise the voltage a little. Each GPU has its own nuances, so some adjustments may be necessary. Once set up correctly, you should observe reduced temperatures and a quieter operation without any decrease in performance. I hope this helps!