FerriteCore review
A focused, open-source mod for reducing Minecraft memory use on clients and servers.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
FerriteCore is an open-source performance mod for Minecraft: Java Edition, designed for modded clients, modpacks, and server installations where memory consumption is a concern. Its focus is specific: reducing memory used by internal data structures rather than providing a broad collection of performance features. The project supports both client and server environments and is positioned as a multi-loader mod, with no Sodium dependency listed.
Its strongest distinction is the range of memory-focused optimizations it covers. FerriteCore reduces memory used by block-state neighbor tables, optimizes block-state property storage, and deduplicates block-state collision and render-shape caches. It also caches multipart model predicates, deduplicates multipart model instances, reduces duplicate strings in model resource locations, and deduplicates baked quad vertex-data arrays. These targets give the mod relevance across block-state, model, rendering-data, and cache-related memory use. Threading-detector memory overhead is also optimized, extending the focus beyond a single subsystem.
FerriteCore is a practical fit for users who want a free, open-source memory optimization mod that can apply to both sides of a Minecraft installation. Its public GitHub repository and MIT License suit users who value inspectable source code and permissive licensing. The trade-off is its narrow purpose: it is aimed at memory usage, not a full performance suite, and it does not offer AI features or tiered paid plans. Choose it when memory reduction is the priority for a modded client, modpack, or server; choose a broader performance tool when memory optimization alone does not match the goal.
FerriteCore pros and cons
- Where it wins
- Targets block states, models, caches, strings, and baked geometry
- Supports both client and server environments
- Open source, free, and released under the MIT License
- Where it doesn't
- Focuses on memory usage rather than broad performance tuning
- Requires a Minecraft mod installation
- Does not include AI features
FerriteCore fact sheet, pricing and score →
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
Last updated · How we research and update