Alternate Current vs Nvidium

Alternate Current is a free, MIT-licensed mod for Minecraft: Java Edition that changes how redstone dust calculates power and updates blocks. It builds networks from connected wires and spreads power from wires receiving power outside a network. The project says this makes updates deterministic and less dependent on location, while retaining high Vanilla parity.

The mod focuses on reducing server work. Its README says redstone dust contributes up to 20 times less MSPT with Alternate Current, and that network-level optimizations can reduce updates by up to 20%. Listed Minecraft versions include 1.14 through 1.21.11, with some specific releases also listed; supported versions and loaders vary by release. Modrinth lists Fabric, Forge, NeoForge, Ornithe and Quilt, and server-side and singleplayer environments. The project links to its source repository, issue reporting and a Discord server. Its GitHub repository has no detected security policy and no published security advisories.

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.