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1Scan for outdated or missing drivers - takes under a minute2Repair Windows errors before they cause bigger problems3Fix the driver behind crashes, sound loss and screen glitchesNVIDIA SLI profiles are per-game driver settings, not a switch that can make every game render across multiple GPUs. Whether SLI works depends on the GPU generation, driver support, graphics API, and—especially for newer cards—whether the game itself implements multi-GPU rendering.
What an SLI profile does—and what it does not
A driver-managed profile assigns 3D settings to a particular game so the driver loads them when that application launches. NVIDIA Control Panel also has system-level SLI and PhysX configuration options for eligible multi-GPU systems. These are related layers, but a game having a driver profile does not prove that it can render across multiple GPUs.
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For newer low-level APIs such as DirectX 12 and Vulkan, developers can implement multi-GPU support within the game. NVIDIA distinguishes that native approach from driver-managed SLI profiles. The distinction matters: editing a driver profile cannot add native multi-GPU code to a game.
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Does SLI profile support still matter?
NVIDIA’s support article, updated September 29, 2021, says it would add no new SLI driver profiles for RTX 20 Series and earlier GPUs beginning January 1, 2021. NVIDIA said existing profiles would continue to be tested and maintained for SLI-ready RTX 20 Series and earlier GPUs. For the GeForce RTX 3090 and future SLI-capable GPUs, NVIDIA says SLI is supported only when implemented natively within the game. Read NVIDIA’s SLI support transition notice.
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The notice is a dated support-policy statement, not a current, exhaustive game-compatibility database. It establishes the broad direction of support, but not whether a particular title, driver, or GPU combination works today.
NVIDIA’s examples of native implementations
In that 2021 article, NVIDIA cited the following titles as examples of native implementation—not as a live or complete compatibility list:
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- DirectX 12: Shadow of the Tomb Raider, Civilization VI, Sniper Elite 4, and Gears of War 4.
- Vulkan: Red Dead Redemption 2, Quake 2 RTX, Ashes of the Singularity: Escalation, Strange Brigade, and Zombie Army 4: Dead War.
For a specific game, check its current documentation and support information rather than treating these historical examples as confirmation of present-day operation.
How the two NVIDIA configuration layers differ
| Layer | What it controls | What it cannot establish |
|---|---|---|
| Per-game 3D profile | Settings assigned to an application and loaded when it launches. | That the game has functioning multi-GPU rendering or will gain performance from it. |
| SLI and PhysX configuration | System-level SLI behavior where possible, plus how connected displays are handled on an eligible platform. | That every game supports SLI or that an SLI setting will improve its performance. |
NVIDIA’s Control Panel documentation describes assigning 3D settings to games and applications, while its SLI and PhysX page documents platform-level configuration. See NVIDIA Control Panel documentation.
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Check whether the system is eligible before changing settings
NVIDIA’s documented SLI and PhysX configuration page applies to systems with at least two NVIDIA GPUs in an SLI platform and at least one PhysX-capable GPU. The available choices depend on the setup and include:
- Disabling SLI.
- Maximizing 3D performance when possible.
- Spanning displays with Surround.
- Activating all displays.
These choices govern system configuration; they do not certify game compatibility. Consult NVIDIA’s SLI and PhysX configuration reference for the documented options.
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How to inspect or edit a game profile
NVIDIA Profile Inspector is a downloadable Windows utility, not a hardware accessory. Its project documentation says it can view and edit global and per-application driver profiles, create profiles for applications missing from the driver database, export and import profiles, and restore settings. This is third-party project documentation, not NVIDIA support documentation.
- Confirm the prerequisites. The project lists Windows, a compatible NVIDIA GPU and display driver, .NET Framework 4.8, and administrator privileges for writing profile changes.
- Save the existing profile. Export a backup before experimentation so you can restore the original settings.
- Choose the specific application profile. Prefer a per-game adjustment over a global change when the setting is intended for one title.
- Change only a setting you can identify and justify. Many advanced options are hidden, experimental, deprecated, undocumented, or driver-version-specific. Avoid copying an unexplained value or compatibility-bit recipe from an unrelated game.
- Test the game, then revert if needed. Compare the same scene and settings before and after, checking image quality and frame pacing as well as average frame rate. Restore the backup if the change causes instability, visual problems, or no useful improvement.
Settings may behave differently across games, GPU generations, and driver versions; a value can do nothing or cause problems elsewhere. The project’s documentation and downloads are available in the NVIDIA Profile Inspector repository.
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Why enabling SLI may not increase frame rate
Multi-GPU rendering is not a guaranteed performance multiplier. NVIDIA says GPU-intensive applications may benefit, while applications limited by the CPU or other factors may not. Its support article gives a general statement of “up to 2x” performance with two graphics cards; that is NVIDIA’s broad claim, not a benchmark for a particular game, GPU pair, resolution, or current driver. NVIDIA also states: “If an application becomes CPU bound, no additional graphics power can improve performance.” Read NVIDIA’s explanation of why SLI gains vary.
When evaluating a change, consider the game’s implementation and graphics API, whether the workload is GPU- or CPU-limited, and the GPU and driver generation. Measure image quality and frame pacing alongside average frame rate, and keep the change reversible. A profile edit alone cannot guarantee a gain.
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