The right way to approach it is as a testable configuration change. Enable it only if your computer exposes and accepts the plan, verify that Windows actually selected the newly created scheme, and compare the results in the workload that matters to you. That approach is more reliable than assuming the word “Ultimate” means every app will run faster.
Windows 10 support status in 2026
Windows 10 reached end of support on October 14, 2025. It continues to run, but normal free security updates, feature updates, and technical support ended; eligible users may have separate Extended Security Updates options.
That does not stop Windows 10 from using power plans, but it is important context before treating a power-policy adjustment as a substitute for a supported, maintained operating system.
What Ultimate Performance is designed to do
A Windows power plan is a collection of hardware and system settings that governs how a computer uses and conserves power. Ultimate Performance builds on the existing High Performance policy and was designed to reduce micro-latencies associated with fine-grained power management.
That wording matters. The intended gain is responsiveness in circumstances where rapidly changing power states can introduce small delays. It is not a promise of a higher sustained CPU clock, a larger power limit, or faster performance in every application.
Modern processors still make important decisions themselves. With hardware-controlled performance states, the CPU monitors activity and selects its frequency at hardware time scales. In other words, Ultimate Performance influences Windows’ power-management policy, but it does not override all firmware and processor decision-making.
That is also why results vary so much between systems. A desktop workstation, a compact laptop, and an OEM-managed business PC can respond differently even when running the same edition of Windows. Firmware may retain control of power management; when it does, changing the Windows plan may not affect real system power or performance at all.
Enable it with a verification-first workflow
The command-line route works by making a new copy of the Ultimate Performance template. Duplication alone is not the same as enabling it: Windows creates a new scheme GUID, and that newly created GUID must be activated.
Use an elevated Windows Terminal, Command Prompt, or PowerShell session if the device or account returns an access-denied error; if duplication fails or the plan is not listed afterward, do not use registry or downloaded-plan workarounds—leave the existing plan in place and use Windows 11’s supported Power mode setting or consult the device manufacturer.
Before changing anything, list the schemes that Windows currently recognizes:
powercfg /list
This gives you a baseline and lets you see which scheme is currently selected. Then duplicate the Ultimate Performance template with this copyable command:
powercfg /duplicatescheme e9a42b02-d5df-448d-aa00-03f14749eb61
Windows should return a new GUID for the copied plan. Record that value exactly. The key detail is that the returned GUID identifies your local copy of the plan; it is the value to use in the next command.
powercfg -setactive <new GUID returned by the duplication command>
Finally, run the listing command again:
powercfg /list
Confirm that Windows reports the newly created scheme as the selected one. Do not assume that a successful duplication command automatically made it active.
This distinction prevents two common mistakes:
- Activating the template identifier rather than the newly created local scheme.
- Treating the presence of a plan in a menu as proof that Windows is actually using it.
Plan visibility can also be device-dependent. An independent test found a PC on which the command succeeded but Ultimate Performance still did not appear in the Power Options selection screen. If that happens, the correct response is not to assume the policy is active or effective. Check the scheme list, confirm selection, and judge the outcome with a workload test.
For a closer technical comparison, Windows can expose the settings within a locally installed scheme:
powercfg /query <scheme GUID>
That is useful when comparing your system’s Ultimate Performance copy with High Performance or Balanced. Exact plan contents and OEM defaults can differ by Windows build and device configuration, so local inspection is more meaningful than relying on a generic checklist from another PC.
Windows 11: Power mode and power plans are not the same control
Windows 11’s current, supported performance control is found at Settings > System > Power & battery > Power mode, where Best performance is the performance-oriented option.
That setting should not be treated as another name for Ultimate Performance. Power mode is the modern Settings interface; Ultimate Performance is a legacy-style power plan. They can affect similar priorities, but they are different controls and should be tested separately rather than stacked mentally into one “maximum performance” switch.
There is an important usability catch. Microsoft notes that a custom power plan can prevent changes to Power mode. If the Power mode selector is unavailable after selecting or creating a custom plan, choose Balanced first, then return to Settings and select the Power mode you want.
For most Windows 11 laptop users, trying Best performance while connected to power is the cleaner first experiment. It is a supported Settings option, is easier to reverse, and avoids assuming that a hidden legacy plan is available or useful on that particular device.
Why a 100% processor setting is not an equivalent fallback
A widely repeated workaround is to create a custom plan and set Maximum processor state to 100%. That can remove a processor maximum-performance limit, but it does not recreate Ultimate Performance.
Microsoft’s definition of a power plan explains why: a plan is a collection of settings, not one processor slider. Processor minimum state, maximum state, energy-performance preferences, boost behavior, parking-related behavior, and other policy choices are separate controls. A 100% maximum processor state simply means no maximum-performance limit is applied through that one setting.
Changing it may be a useful diagnostic experiment when investigating throttling or a restrictive custom configuration. It should not, however, be presented as a substitute for the Ultimate Performance template or as evidence that the two policies behave identically.
The real cost: power use and warmth
Performance-oriented modes have a straightforward trade-off: they can consume more power and make the machine run warmer. Microsoft specifically warns that Best performance can drain a laptop battery faster and increase device warmth, while the original Ultimate Performance description also noted potentially higher consumption than Balanced.
Those are practical consequences, especially for portable PCs:
- On battery: shorter unplugged runtime is a reasonable expectation for a more performance-focused policy.
- In warm rooms or compact systems: higher heat output can lead to louder fans and less comfortable surface temperatures.
- On desktops: extra consumption may be tolerable during an important render, compile, or storage-heavy task, but wasteful during idle time.
The supplied evidence does not establish that Ultimate Performance damages batteries, creates unsafe overheating, shortens component life, or imposes a measurable electricity cost on a specific PC. Those claims depend on the device, cooling, workload, and duration. The supported conclusion is narrower: higher-performance policies can use more power and run warmer.
Laptop behavior deserves additional caution. Microsoft’s 2018 announcement said Ultimate Performance was unavailable on battery-powered systems at that time. Later reports show inconsistent outcomes on newer devices. That historical limitation does not prove how any current laptop will behave, whether plugged in or on battery. Treat availability and effect as device-specific, and verify locally.
Do not assume a gaming or editing uplift
It is tempting to make simple claims such as “games will not benefit” or “video editing will become faster.” The available evidence does not support either as a universal rule for Ultimate Performance.
A relevant comparison of Balanced and High Performance found little difference for most tested processors, while some Core Ultra 200S workloads differed materially. That is useful evidence against blanket advice, but it is not an Ultimate-Performance-specific benchmark and cannot prove a result for your game, editor, CPU, firmware, or cooling setup.
A better test is short, controlled, and repeatable:
- Pick one representative task: the same game scene, export project, compilation, virtual-machine workload, or storage test.
- Test Balanced first, then High Performance or Windows 11 Best performance, then Ultimate Performance if it is available and verified.
- Keep the power source, cooling conditions, app version, project files, and background activity as consistent as possible.
- Run each test more than once and compare averages or repeatable completion times, not a single run.
- Note fan noise, temperatures, and battery impact alongside performance.
If the timing difference is inside normal run-to-run variation, Balanced is usually the better everyday choice. If a time-sensitive workstation task repeatedly improves and the additional heat and power use are acceptable, switching plans for that task can be sensible.
A practical policy for desktops, workstations, and laptops
Ultimate Performance makes the most sense as an opt-in workstation setting, not a universal default. It is most defensible when a machine has adequate cooling, is generally plugged into mains power, runs a repeatable demanding workload, and shows a measured benefit after verification.
It is less compelling for routine web browsing, documents, media playback, and lightly loaded systems. On those workloads, aggressive performance policy may simply trade efficiency and acoustics for no noticeable improvement.
For managed PCs, support teams should also be cautious about deploying it broadly. Firmware and OEM controls can make results inconsistent, and a policy that adds heat or battery drain without measurable benefit creates support burden rather than productivity. A targeted rollout tied to a defined application benchmark is more defensible than enabling it across every endpoint.
How to return to normal behavior
Reverting does not require deleting the Ultimate Performance copy. Select Balanced again in the legacy power-plan interface, then confirm the selected scheme with powercfg /list. On Windows 11, returning to Balanced may also restore access to the Settings-based Power mode selector; from there, choose the desired Power mode.
Keep Ultimate Performance available only if it has earned its place through testing. Its name describes an intent to reduce power-management latency for demanding workloads—not a guarantee that every Windows PC, application, or game will become faster.