FerriteCore vs ServerCore

FerriteCore is a free, MIT-licensed coremod for Minecraft: Java Edition that targets RAM use. It reduces memory associated with block states, models, predicates, strings, voxel shapes and baked quads through a set of documented optimizations. Examples include replacing block-state neighbor tables with FastMaps, caching multipart model predicates, deduplicating model instances and reducing baked-quad memory. The project reports that individual techniques saved hundreds of megabytes in cited tests; one pack example showed post-garbage-collection memory moving from roughly 3.1 GB to 1.1–1.2 GB on the title screen. Several optimizations have no CPU impact during play, while some add load-time CPU cost. ThreadingDetector optimization is disabled by default because it may very rarely cause race conditions. FerriteCore supports Fabric, Forge, NeoForge and Quilt and is listed for Minecraft Java Edition versions 1.16.5 through 26.3, depending on loader builds. It is marked for both client and server use, and the maintainer recommends installing it on both because some optimizations apply server-side. Versions before 1.16 are not supported for backporting.

ServerCore is a free, self-hosted Minecraft mod focused on server performance and lag-spike reduction. It runs on dedicated servers and in singleplayer, with Modrinth compatibility for Fabric, Forge, and NeoForge. Entity Activation Range reduces the entities processed by the server. Dynamic checks can adjust chunk-tick distance, view distance, simulation distance, and mobcaps according to tick time and configuration. Administrators can set spawn rates and mobcaps per spawn group, with optional rules for reinforcements, spawners, and nether-portal random ticks. Breeding Caps limit same-type breeding within a radius, while chunk-ticking-distance narrows the range for mob spawning and random ticks. Commands include reload, settings, status, mobcaps, and statistics. Configuration files are config.yml and optimizations.yml in config/servercore. Changes that alter vanilla behavior are disabled by default.