PerDIMM

PerDIMM is a line of high‑density memory modules developed by LiTech Systems for use in modern server and storage platforms. Designed to address the growing demand for scalable, low‑latency memory, each PerDIMM combines a dual‑channel DDR5 interface with an embedded microcontroller that manages power states, error correction, and inter‑module coordination.

The core innovation of PerDIMM is its partitioned row architecture. By segmenting the DRAM into independently addressable row banks, the module allows simultaneous access to multiple data streams, which reduces access contention and improves throughput in multi‑threaded workloads. The embedded controller implements advanced interleaving schemes, mapping virtual memory pages to physical rows across multiple DIMMs to balance heat and bandwidth usage.

PerDIMM utilizes 187.5 Gbit/s per‑channel data rates, supporting both single‑ended and differential signaling. An integrated SMART‑Health interface reports temperature, power draw, and refresh cycle statistics to the host system, enabling fine‑grained power‑management strategies such as dynamic voltage scaling. Error detection and correction are performed with 16‑bit ECC, and the module can automatically recover from single‑bit error bursts that occur during relatively high‑density operation.

Typical use cases for PerDIMM include high‑performance database servers, real‑time analytics engines, and artificial‑intelligence inferencing platforms where memory bandwidth and low latency are critical. It is compatible with the latest Intel Xeon Scalable processors and AMD EPYC CPUs, and can be deployed in both 1.2 mm and 1.5 mm form factors to accommodate 2‑inch and 3‑inch memory rigs.

LiTech claims that a rack‑mounted configuration using eight PerDIMM modules delivers up to 50 GB/s of bidirectional bandwidth while maintaining error rates below 10 MIT (million in‑accuracy‑trials). The modules also support remote diagnostic tools via a proprietary firmware interface, allowing system administrators to pre‑emptively detect impending failures. As data‑center workloads continue to grow, PerDIMM is positioned as a flexible, high‑performance memory solution for enterprises that require scalability without sacrificing reliability.