ModsFinder

Perf Boost

by Omymobie

Perf Boost adds a toggleable stats HUD and an optional performance mode for Fabric on Minecraft 1.21.10.

FabricClient-side onlyMIT LicenseOpen source1.21.10

What it does

A stats overlay in the upper-right part of the screen reports frames per second, frame time, memory use, counts of entities and chunks, multiplayer ping, and processor load and heat where the hardware exposes them. Pressing P hides or shows it. Performance mode, toggled with O, temporarily lowers graphics settings to raise frame rate and restores them when switched off.

Only the client needs the mod, so it is installed on the player's side alone. Fabric API is required. Perf Boost is open source under the MIT License and is published for 1.21.10 only.

Key features

  1. Live stats overlay

    FPS, frame time, memory, entity and chunk counts appear in the corner without leaving the game.

  2. Toggleable performance mode

    Pressing O lowers graphics settings for a quick frame rate gain in busy areas, such as crowds of entities or heavy particle effects.

  3. Session-only changes

    Previous graphics settings return when performance mode is turned off, and the options file is not written.

Compatibility

Latest build for each game version and loader.

1.21.101.0.0
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Requirements

Dependencies declared by the latest file for each loader.

Required 1

Fabric APILightweight and modular API providing common hooks and intercompatibility measures utilized by mods using the Fabric toolchain.
Required

How it compares

Full comparison

MSIandHud is client-side only, published for 1.21.11 and not open source. FpsPing is client-side only, covers 1.21.8 – 1.21.11 and is not open source. Perf Boost is open source under the MIT License and targets 1.21.10.

ModLoadersGame versionsEnvironmentUpdated
Perf BoostFabric1.21.10Client-side only2026-02-16
MSIandHudFabric1.21.11Client-side only2026-03-06
FpsPingFabric1.21.8 – 1.21.11Client-side only2026-05-29

Questions

Does Perf Boost need Fabric API?

Yes. Fabric API is listed as a required dependency and must be installed alongside Perf Boost.

Does the server need Perf Boost?

No. It is installed on the player's side alone, so servers need nothing.

In the catalog

Perf Boost is one of 36,990 Utility mods on ModsFinder, and one of 25,772 Utility mods for Fabric. 15,569 mods support Minecraft 1.21.10.

Utility mods36,990Fabric modsMods for 1.21.1015,569

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What the author says

Perf Boost adds a stats HUD in the top-right (toggle with P) showing FPS, frame time, RAM usage, entity and chunk counts, ping in multiplayer, and CPU usage/temperature when available. It also adds performance mode (toggle with O): when enabled, the mod temporarily lowers your graphics settings to improve FPS, and…
Omymobie, on the Modrinth page

Official listing

Owner
Omymobie
Published
2026-02-16
Updated on Modrinth
2026-02-16
Facts verified
2026-10-15

Tags

Utility
Open on ModrinthCompare