Overview
- Micron has publicly demonstrated a working 512GB DDR5 RDIMM across multiple server platforms, reporting transfer speeds up to 9,200 MT/s with working samples now in testing.
- The module uses vertical 3D die‑stacking with through‑silicon vias to pack 512GB on a single RDIMM and Micron says it cuts operating power to about 16.0 W versus 44.2 W for four 128GB sticks, a reduction of more than 60%.
- AMD and Intel are formally validating the module for next‑generation server platforms, and enterprise customers including JPMorganChase have signaled interest in higher per‑slot memory capacity.
- Micron reports up to 1.4× performance on memory‑bound analytics workloads and improved throughput for in‑memory databases such as Redis and RocksDB, while noting these figures come from company testing and will need independent benchmarking.
- Working samples are in testing and Micron targets volume production in the second half of 2027, a move that could let standard 24‑slot dual‑socket servers hold as much as 12 TB of DDR5 and reduce data movement to slower storage tiers.