CXMT (ChangXin Memory Technologies) DDR5 Memory

CXMT DDR5 compatibility: (1) Intel platforms - 12th Gen Alder Lake, 13th Gen Raptor Lake, 14th Gen Raptor Lake Refresh, and Xeon Scalable processors

(2) AMD platforms - Ryzen 7000 series (AM5 socket), Ryzen 9000 series, and EPYC 9004/9005 processors

(3) Server platforms - Intel Xeon Scalable (Sapphire Rapids, Emerald Rapids), AMD EPYC (Genoa, Bergamo, Turin)

(4) Verification - CXMT DDR5 is tested and validated on major platforms

(5) JEDEC compliance - ensures broad compatibility with DDR5-compliant systems. Always verify specific platform memory support lists (QVL) for guaranteed compatibility. CXMT works closely with platform vendors to ensure optimal compatibility.

Check platform QVL (Qualified Vendor List) for guaranteed compatibility. Contact technical team for platform-specific guidance.

RDIMM vs UDIMM comparison: (1) RDIMM (Registered DIMM) - includes register chip that buffers address and command signals, enabling higher capacity and better signal integrity for servers

supports ECC

used in enterprise servers and workstations

(2) UDIMM (Unbuffered DIMM) - direct connection to memory controller, lower latency, lower cost

used in desktops and entry-level servers

typically no ECC (though ECC UDIMM exists)

(3) Capacity - RDIMM supports higher capacities (up to 96GB per module), UDIMM typically up to 32GB

(4) Performance - UDIMM has slightly lower latency, RDIMM enables higher capacity

(5) Use case - RDIMM for servers, UDIMM for PCs and workstations. CXMT offers both RDIMM and UDIMM options.

Use RDIMM for enterprise servers requiring high capacity. Use UDIMM for desktops and workstations.

DDR5 power efficiency improvements: (1) Lower voltage - DDR5 operates at 1.1V vs DDR4 at 1.2V, reducing power consumption by ~10%

(2) On-Die Power Management - DDR5 includes PMIC (Power Management IC) on the module for better voltage regulation

(3) Improved architecture - dual 32-bit channels allow more granular power management

(4) Higher density - more memory capacity per module reduces number of modules needed

(5) Better performance-per-watt - higher bandwidth at similar power levels

(6) Temperature sensing - DDR5 modules include temperature sensors for thermal management. For data centers, DDR5 power savings translate to significant operational cost reductions and improved cooling efficiency.

DDR5 provides 10-15% power savings vs DDR4. Important for data center TCO optimization.

MRDIMM (Multiplexed Rank DIMM) explained: (1) Technology - uses data buffer to multiplex data from multiple ranks, effectively doubling bandwidth

(2) Speed - MRDIMM starts at 8800Mbps, with future speeds up to 12800Mbps+

(3) Use case - high-performance computing, AI/ML training, in-memory databases, high-frequency trading

(4) Platform support - Intel Xeon Scalable (Granite Rapids), AMD EPYC future generations

(5) Capacity - supports very high capacities for memory-intensive applications

(6) Cost - premium pricing for premium performance. MRDIMM is the next evolution after RDIMM for the most demanding server applications. CXMT offers MRDIMM and TFF MRDIMM for high-performance servers.

Use MRDIMM for HPC, AI/ML, and memory bandwidth-intensive applications. Requires latest server platforms.

CXMT DDR5 capacity options: (1) Die density - 16Gb and 24Gb DDR5 dies available

(2) Module capacity - using 24Gb dies: UDIMM up to 48GB, SODIMM up to 48GB, RDIMM up to 96GB

(3) 3D stacking - future products may support higher densities through advanced packaging

(4) System capacity - depends on number of memory channels and slots

example: 2-socket server with 12 channels and 96GB RDIMM = 1.15TB per socket

(5) TFF MRDIMM - Tall Form Factor enables higher capacity in space-constrained designs. The 24Gb density is particularly valuable for data centers seeking maximum memory capacity per server.

24Gb dies enable highest capacity. Choose based on system memory slot limitations and capacity requirements.