First 512GB DDR5 Module Unveiled: What Designers Need to Know

Sep 28, 2026

Storage giant Micron has launched **its first 512GB DDR5 memory module, delivering a maximum data transfer rate of 9200MT/s**. It targets next-generation AI servers and data center infrastructure.

Both AMD and Intel have started validation work on this module for their upcoming server platforms.

Micron projects that the 512GB DDR5 RDIMM will **enter mass production in the second half of 2027 based on customer demand.**

The 512GB DDR5 RDIMM leverages advanced 3D stacking packaging. Multiple DRAM dies are stacked vertically and interconnected via TSV through-silicon vias.
Micron has not disclosed the exact model and quantity of DRAM chips used.

According to Micron’s testing, **one 512GB DDR5 RDIMM consumes around 16W, while four 128GB DDR5 modules for the same total capacity draw about 44.2W.**

At the same capacity, the single 512GB module reduces power consumption by more than 60%.

In terms of performance, Micron states that for some memory-bound data analytics workloads, the 512GB RDIMM can deliver up to 1.4x higher performance compared with 256GB DDR5 configurations.

For memory-intensive databases and caching applications such as RocksDB and Redis, more data can reside directly in memory to improve throughput and concurrency.

Micron is not the first supplier to launch a 512GB DDR5 RDIMM; Samsung released its version earlier. However, **this is the industry’s first certified 512GB memory module capable of running at 9200 MT/s under the standard 1.1V operating voltage.**

Back in May this year, Micron began sampling its 256GB DDR5 RDIMM to server ecosystem partners. It also uses 3D stacking and TSV packaging, with a peak speed of 9200MT/s.