Take full control of how Windows allocates CPU time, I/O bandwidth, and power to any running process. Set priorities, pin processes to specific cores, enable Efficiency Mode to reduce heat and power, and save your tuning as a persistent JSON profile that loads automatically on startup.
Dark HUD, Real-Time Control
A clean dark-themed control panel for every running process on your system.
Precision Process Tuning
Six CPU priority levels, four I/O priority levels, and per-core affinity — all per process.
Set the Windows scheduling priority for any process — from Real Time for latency-critical apps to Idle for background noise.
- Real Time — maximum, use with care
- High — above most system processes
- Above Normal — slightly elevated
- Normal — default Windows priority
- Below Normal — deprioritised
Control disk and network I/O scheduling independently from CPU priority. Keep heavy background I/O from stalling your foreground work.
- High — prioritised disk access
- Normal — default behavior
- Low — throttled background
- Very Low — minimal, for idle tasks
Pin a process to specific CPU cores. Isolate latency-sensitive apps to dedicated cores, or prevent a rogue process from consuming your entire CPU.
- Per-core checkbox selection
- At least one core always enabled
- Works with any number of cores
Enable or disable Intel/AMD dynamic CPU frequency boost (Turbo Boost / Precision Boost) on a per-process basis.
- Toggle per process
- Reduce heat for background tasks
- Maximize performance for foreground
Control the Windows kernel's dynamic thread priority raising after waits. Essential for fine-tuning real-time and latency-sensitive workloads.
- Read current boost state
- Enable / disable per process
- Useful for audio/video apps
Toggle Windows 11 Efficiency Mode on any process. Lowers CPU usage, reduces heat, and extends battery life for background applications.
- Uses Windows EcoQoS API
- Perfect for browser helpers, updaters
- Reduces power draw without killing the process
Live CPU & RAM Dashboard
Real-time per-core CPU usage bars and RAM consumption, updated continuously.
Profiles That Survive Reboots
Your tuning is remembered. PLimit auto-applies saved settings every time it starts.
All process settings — priority, affinity, boost, efficiency, I/O — are serialized to Settings/processes.json next to the executable.
PLimit reads your saved profile at launch and reapplies all settings to matching processes automatically. Set it once, forget it.
Search by process name or PID from the real-time process list. Live count display shows how many processes are running.
Runs with Administrator privileges to modify system-level process settings. Graceful error handling for permission-denied scenarios.
Modern dark-themed WinForms UI with immersive dark title bar (Windows 10 22H2+ / Windows 11) and DoubleBuffered ListView for smooth rendering.
Mutex-protected single instance prevents duplicate PLimit windows from competing with each other's settings writes.
Built On
Download PLimit
Open source, MIT licensed. Download from GitHub. .NET 10 Runtime required. Windows 10+ only.