Micron 256GB DDR5 RDIMM reaches 9200 MT/s with 1-gamma DRAM
How much memory is enough? What about a single module with 256GB?
Micron has announced sampling of its new 256GB DDR5 RDIMM for server platforms. The module uses the company’s 1-gamma DRAM process and is rated for speeds up to 9200 MT/s.
According to Micron, the new module is more than 40% faster than DDR5 server memory currently in volume production. The comparison is based on 9200 MT/s against 6400 MT/s modules.
The 256GB RDIMM uses 3D stacking with multiple DRAM dies connected through TSVs, short for through-silicon vias. This allows Micron to increase density while keeping the module in a standard server memory format.
Micron is collaborating with key ecosystem enablers to validate the 256GB 1-gamma DDR5 RDIMM across their respective current and next-generation server platforms. This co-validation ensures broad platform compatibility and accelerates the path to production deployment for data center customers building AI and HPC infrastructure at scale.
Micron also claims a power efficiency advantage versus using two 128GB modules. The company says one 256GB RDIMM operates at 11.1W, while two 128GB modules consume 19.4W combined. That results in more than 40% lower operating power for the same 256GB capacity.
The company is sampling the modules to server ecosystem partners for validation on current and next-generation platforms. Micron is positioning the product for AI, HPC, large language models, inference and high-core-count CPU workloads. It is not meant for consumers, obviously.
| DDR5 variants | ||
|---|---|---|
| VideoCardz.com | What does it stand for | Platform |
| UDIMM | Unbuffered Dual In-Line Memory Module | Desktop/Mainstream |
| SODIMM | Small Outline DIMM | Laptops/Mainstream |
| CUDIMM | Clocked Unbuffered DIMM | Desktop/Enthusiasts |
| CSODIMM | Clocked Small Outline DIMM | Laptops/Enthusiasts |
| CAMM2 | Compression Attached Memory Module 2 | Laptops |
| LPCAMM2 | Low Power CAMM2 | Laptops |
| RDIMM⬅️ | Registered Dual In-Line Memory Module | Servers/Workstations |
| LRDIMM | Load-Reduced DIMM | Servers |
| MRDIMM | Multiplexed Rank DIMM | Servers |
| CQDIMM | ASRock’s name for a 4-rank CUDIMM-based design | Desktop/Enthusiasts |
| HUDIMM | Half Unbuffered DIMM | Desktops/Budget |
| HSODIMM | Half Unbuffered Small Outline DIMM | Laptops/Budget |
Source: Micron PR
