Sodium is a new mod aimed at improving the performance of the game, significantly increasing the FPS in Minecraft. Sodium is a kind of analogue of the popular Optifine mod, although it does not yet perform all the functions of Optifine.
Mod Sodium was created to improve performance in minecraft. Increases FPS, chunk loading speed and many small improvements. Also gives smooth lighting for water and some blocks, improved biome transition for blocks and water.

The mod is a free and open source rendering engine for minecraft, it solves a number of problems by increasing the performance of the game, it is developed for the mod loader for Fabric and supports working with mods. Recently there was an unofficial version of the mod for Forge.

FPS Boost Examples:
Intel i5-7200U @ 2.5GHz / Intel HD 620 (37->69 FPS) Intel i7-3770 @ 4.0 GHz / GTX 960 (27->152 FPS) Intel i3-6100 / GTX 750 Ti (10->102 FPS) Intel i7-8700K @ 5.0 GHz / RTX 2080 Ti (87->368 FPS) AMD Ryzen 5 2600 / RX 580 (133->586 FPS)