2026-11-04 · Fonte：Tom's Hardware
Micron ends Samsung's five-year run alone at 512GB DDR5, claiming 60% lower energy use than four 128GB modules — but pricing may deter even hyperscalers.
Micron has announced 512GB DDR5 memory modules, ending a five-year stretch in which Samsung's 512GB DDR5 modules faced no direct rival. Alongside the capacity milestone, Micron promises speed bins up to 9200 MT/s, putting DDR5-9200 at the head of the new lineup. The move reintroduces head-to-head competition at the very top of the DDR5 capacity ladder, a segment that until now had a single supplier.
The published specifications carry direct consequences for server builders. Each module draws 16W, and populated systems can reach up to 12TB of memory per server. Micron claims the 512GB modules are 60% less energy-intensive than configuring equivalent capacity with four 128GB modules. Framed that way, the product is an efficiency argument as much as a density play: fewer modules hosting more gigabytes, drawing less power per terabyte in the rack.
For data center operators, the figures matter at scale. A 12TB ceiling per server marks a high watermark for memory capacity in a single machine, while the 16W per-module draw keeps memory's contribution to power budgets contained. The 60% efficiency claim against a four-module 128GB configuration speaks directly to the operating cost calculations that shape large-scale procurement.
The open question is price. Tom's Hardware cautions that the modules' pricing could prove too high even for hyperscalers, the customers best positioned to absorb premium memory costs. Until Micron discloses commercial terms, adoption will likely hinge on whether buyers judge the energy savings and density gains worth the premium — and whether Samsung responds to its first challenger at this capacity tier in five years.
Tags: Micron · Samsung · 512GB DDR5 · DRAM · Data Center · Server Memory
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