HOW-TO · RTX HDR · CHECKED ON NPI 3.0.2.3 · NOT TESTED ON A GPU
RTX HDR, Dynamic Vibrance and sharpening per game in NPI
In the game's profile set RTX HDR - Enable (0x00DD48FB) to On (Windows HDR must be on), or to Off in one profile to exclude a game. RTX Dynamic Vibrance - Enable works the same way. The brightness, middle grey, contrast and saturation sliders store plain numbers whose scale NVIDIA does not document, so we do not publish encodings. NPI 3.0.2.3 has no RTX Video setting; use the NVIDIA App for that.
You need
- NPI
- 3.0.2.1 or newer
- Hardware
- RTX GPU and an HDR display
- Windows
- HDR switched on
What this page can and cannot tell you
RTX HDR converts an SDR game to HDR, and RTX Dynamic Vibrance adjusts colour. NVIDIA controls both from the NVIDIA App, and NPI reads and writes the same profile rows. Our lab has no NVIDIA GPU and no HDR display, so we have not seen either filter run. Everything below comes from NPI’s own setting definitions and from NVIDIA’s shipped profile database, and we say so in each place. CODE · NPI 2994194 untested Visible result on a real HDR display.
Enable RTX HDR for one game
Check the prerequisites
An RTX GPU, a driver that supports RTX HDR, an HDR display, and Windows HDR switched on. Without Windows HDR the filter has nothing to output to. We could not verify the minimum GPU or driver ourselves, so check NVIDIA’s RTX HDR requirements.
Open the game's profile
Select the profile NVIDIA ships for the game, or create one for its exe.
Turn it on
Set ↗ (RTX HDR - Enable) to
On(0x00000001).Apply and restart the game
Click Apply Changes and start the game fresh. Turn off the game’s own HDR first: two HDR conversions on one image look wrong.
The tuning rows and what is known about them
| Setting | Values NPI lists | What we know |
|---|---|---|
| ↗ | Off, On | The switch. Documented in NPI. |
| ↗ | None named | Peak brightness. Stored as a number; NVIDIA does not document the scale, so no encoding is given here. |
| ↗ | None named | Middle grey. Same: scale not documented. |
| ↗ | None named | Contrast. Same: scale not documented. |
| ↗ | None named | Saturation. Same: scale not documented. |
| ↗ | 0x00, 0x06, 0x0A, 0x02, 0x03, 0x23 | Driver flags set by the NVIDIA App. NPI labels them as debanding strengths, with an indicator and a debug variant; NVIDIA does not document the bits. |
If you want the sliders on a game, set them in the NVIDIA App once, then read the resulting values in NPI. That is the only reliable way to learn the scale on your own setup, and it is why this page does not invent numbers. CODE · NPI 2994194
Turn RTX HDR off for one game
Set ↗ to Off in that game’s profile. A game profile overrides the Global profile, so RTX HDR can stay on for everything else. NVIDIA already ships this set to Off for four games in driver 621.14: Metro Exodus, The Last of Us Part I, UNCHARTED: Legacy of Thieves Collection and Resident Evil 4. OFFICIAL · driver 621.14 package, F45
A second row, ↗ (RTX HDR Allow), is stored as Disallow in 224 of NVIDIA’s profiles, almost all non-game programs such as browsers, media players and creative apps, and as Allow only for GeForce NOW. So the driver already keeps the filter away from most desktop programs. OFFICIAL · driver 621.14 package, F45 We have not tested whether changing this row for a game has any effect, so prefer the Enable row.
RTX Dynamic Vibrance
Three rows. ↗ (Enable) is Off or On. ↗ (Intensity) and ↗ (Saturation Boost) are listed by NPI as 0% to 100% in steps of 5%, so those two scales are documented in NPI even though the visual result is untested. CODE · NPI 2994194 NPI also lists older ↗ and ↗ rows under the name Dynamic Vibrance; we do not know whether current drivers still read them.
Sharpening
The old Control Panel’s image sharpening lives in three rows, available from driver 441.87. ↗ turns the filter on, ↗ sets the amount from 0.00 to 1.00 in 0.01 steps, and ↗ (Ignore Film Grain) uses the same scale. CODE · NPI 2994194 NVIDIA’s own profiles set the amount to 0.60 in 21 programs, which gives a sense of a normal value. OFFICIAL · driver 621.14 package Sharpening is separate from any in-game sharpening and from DLSS sharpness, so do not stack all three. Where the Control Panel setting went is on the Control Panel page.
What NPI cannot do: RTX Video, DSR and the overlay
- RTX Video Super Resolution and RTX Video HDR. None of the 928 settings in NPI 3.0.2.3 is named for either, so we found no way to set them. Use the NVIDIA App. This statement is dated 8 Nov 2026 and applies to NPI 3.0.2.3; recheck after a new release. CODE · NPI settings list
- DSR factors. NPI lists only an experimental row, ↗ (DSR Apply Disable), not the resolution factors. We did not test what it does.
- The NVIDIA App overlay. ↗ (NVIDIA App Overlay - Flags) has the values Off, Whitelist app for desktop capture and Disable NVIDIA App statistics. NVIDIA sets it in 626 of its profiles. Whether it hides the overlay for a game is untested here.
Because the NVIDIA App writes these same rows, it can change them behind your back. The NPI vs NVIDIA App page explains why and how to avoid conflicts.
Undo
Select the profile and reset the row you changed, or click Defaults to clear the profile. The reset page compares the methods. If the NVIDIA App still shows RTX HDR on after you set the row to Off, check whether it applied its own per-game setting over yours.
Questions people ask
Can I enable RTX HDR with NVIDIA Profile Inspector?
NPI shows the RTX HDR rows, and RTX HDR - Enable (0x00DD48FB) takes Off or On. Whether the filter then runs depends on your GPU, driver, display and the game. We could not test it, as our lab has no NVIDIA GPU, so this is read from NPI's definitions and NVIDIA's driver profiles.
How do I disable RTX HDR for one game?
Set RTX HDR - Enable to Off in that game's profile. NVIDIA already ships it set to Off for Metro Exodus, The Last of Us Part I, UNCHARTED: Legacy of Thieves Collection and Resident Evil 4 in driver 621.14.
Can NPI turn on RTX Video Super Resolution?
Not as far as we can find. None of the 928 settings in NPI 3.0.2.3 is named for RTX Video or video super resolution. Use the NVIDIA App for it. Check again after each NPI release.
Does RTX HDR cost FPS?
Probably some, as it is a filter applied to every frame, but we have no measurement and do not quote one.
Sources
- NPI setting definitions (CustomSettingNames.xml github.com · accessed 8 Nov 2026 · upstream
- NVIDIA driver 621.14 package nvidia.com · accessed 8 Nov 2026 · official