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Monitor Overclocking

  • GamersNexus has a nice guide to get started into the topic - worth to read!

Why overclock your Monitor?

  • Higher Refresh Rate(s)
  • Custom Resolution
  • Fix/Correct missing/wrong EDID values
  • Correct/change or expand FreeSync range(s)
  • Smoother fps gameplay

Possible Disadvantages

  • Artifacts or no picture output
  • The settings you made must be imported and applied manually after each new driver installation (import/export)
  • Skipped frames (even if the monitor accepted the new values and everything seems "fluid")
  • HDCP might break or DRM fails
  • Color might be changed after applying the changes use Color Sustainer to correct this. (This is a OS issue!)

Possible Risks?

None (!), every change is temporarily until you approved the change. You can import/export profiles and backup the current states before you do any serious change. The hardware itself will not be affected in case something went wrong.

Tools needed

Color profile(s)

Make sure you install a correct ICC Color profile. You can right-click on it and install it or place it manually under \System32\Spool\Drivers\Color. You should work with two profiles, one for applications such as Office and one for Gaming (if you have a separate monitor for gaming only you can skip this part and only apply the gaming color profile.

If possible:

  • Go with an IPS panel (yep, even for gaming such as the ASUS ROG PG279Q)
  • See if you get a compromise between HZ, Color and viewing angle
  • Good reviews are coming from professional sites like prad.de, TFT Central or ExpertReviews.
  • Make sure that you correctly calibrate your Monitor. In case that you can effort a hardware Colorimeter such as the i1Display Pro prefer this instead.

FPS capping

Why is capping the FPS important?

There is an detailed answer here in short: you should ALWAYS CAP THE FPS which results in a smooth stutter and lag-free experience. RTSS Rivatuner Statistics Server is more accurate than most (not all) in-game FPS limiter, the nVidia own limiter adds some delay to it and is not recommend to use!

Performance issues with multi-monitors

Multiple monitors plugged might causes performance issues which is depending on the game engine and if you do other tasks to the same time on other monitors. A workaround is to Unplug non-primary monitors or to ensure that every monitor runs at the same Hz.

Using Variable Refresh Rate (FreeSync)

The new VRR does not replace the traditional FreeSync / Adaptive-Sync! The new Windows toggle doesn’t override any of the settings you’ve already configured in the FreeSync or Adaptive-Sync control panels.

Requirements:

  • Windows 1903+
  • WDDM 2.6+ driver
  • FreeSync or Adaptive-Sync capable monitor
  • DX11 full-screen game which does not support VRR natively

Enabling dithering for nVidia Geforce GPUs (non-Quadro GPUs/Linux)

Worth knowing

  • Under AMD Temporal dithering is (by default) on.
  • Intel Graphics tweak tool can adjust Intel's dithering. Newer Intel driver have dithering disabled by default.
  • Programs like Handbreak automatically seems to apply dither when converting to 8 bit.
  • Since nVidia driver v353.06 users can select bit depth in the Nvidia Control Panel on all systems, if you see 10-bit Nvidia will automatically dither down to the bit depth selected if it is lower. If you can select 10-bit in Nvidia CP, the driver will not dither and sent true 10bit signal to your display.
  • Nvidia will not dither 10-bit input when set to 12-bit.

Dithering on Nvidia GPUs are usually only present with Quadro GPUs, the only exception are GeForce drivers under any Linux OS. The user Guzz discovered a way to unlock the hidden registry entry "DitherRegistryKey". The method seems to be stable for Windows 7 up to Win 10 1607. Later OS versions seems to have massive problems. Linux handles it a bit different from Windows.

Drawbacks

  • Constant banding everywhere on 1903+ (?)
  • Disable dithering -> shut down -> turn on PC -> enable dithering seems the best way to workaround the problems.
  • Nvidia drivers (300+) rounding VCGT from 16-bit to 8-bit with certain scenario such as after monitor wake up from sleep or after computer wake up from sleep which might causes problems.
  • Multi-Monitor problems.