ImmediatelyFast vs Nvidium

ImmediatelyFast is a free, open source Minecraft mod that improves client-side rendering performance in Minecraft: Java Edition. It batches draw calls using a custom buffer and sends data to the GPU more efficiently. Its optimizations cover entities, block entities, particles, text, GUI and HUD, maps, and immediate mode rendering used by other mods. The project supports Fabric, Forge, NeoForge, and Quilt, with compatibility listed for Minecraft versions 1.18.2 through 1.21.x and versions 26.1.x, 26.2, and 26.3. It is designed to work with most mods and modpacks, but names OptiFabric, OptiFine, LunarClient, and LabyMod as incompatibilities. The project says it can improve FPS when the CPU is the bottleneck, with slower CPUs benefiting more than very fast ones. A configuration file in the Minecraft instance’s config folder offers performance or compatibility options. The mod is licensed under LGPL-3.0-or-later, and developers can consult API documentation. The project links to a GitHub issue tracker and Discord server for support.

Nvidium is a free client-side rendering backend for Sodium in Minecraft: Java Edition. It uses NVIDIA mesh shaders for a largely GPU-driven rendering pipeline that culls terrain geometry. The project requires Sodium and an NVIDIA GTX 1600 series or newer GPU with Turing architecture or later. It is listed for Fabric and Quilt, and the supported platform is Linux. Listed Minecraft Java Edition versions include 26.3, 26.2, 26.1.x, 1.21.6–1.21.11, 1.21–1.21.1, 1.20.6, 1.20–1.20.4, and 1.19.4. Nvidium does not function on non-NVIDIA systems and disables itself there without affecting gameplay. It also switches itself off when Iris is actively using shaders. The project warns that mesh shader use may cause Minecraft to terminate unexpectedly. Nvidium is licensed under LGPL-3.0-only; GitHub is linked for issue reports and Discord for community discussion.