Brand: SK Hynix | Category: Memory (RAM)
SKU: SKHY-CMMDDR5128GE3 | Part #: CMM-DDR5-128G-E3 | MPN: CMM-DDR5-128G-E3
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The SK Hynix CXL 2.0 Memory Module CMM-DDR5 128GB from SK Hynix is enterprise-grade Memory (RAM) hardware built for data centers. SK Hynix CMM-DDR5 delivers 128GB of CXL 2.0-attached DRAM capacity to memory-constrained servers without consuming additional DDR5 DIMM slots. Available in brand new condition. SK Hynix memory (ram) products are trusted by enterprises and data centers worldwide. Available from Omnixon Global. Contact our sales team to request a quote.
| Brand | SK Hynix |
| Category | Memory (RAM) |
| SKU | SKHY-CMMDDR5128GE3 |
| Part Number | CMM-DDR5-128G-E3 |
| Condition | New |
| Model | CMM-DDR5 128GB |
| Memory Technology | DDR5 DRAM |
| Total Capacity | 128 GB |
| Host Interface | CXL 2.0 (CXL.mem Type-3) over PCIe 5.0 x8 |
| PCIe Generation | PCIe 5.0 |
| PCIe Lane Width | x8 |
| CXL Protocol Version | 2.0 |
| CXL Device Type | Type-3 Memory Expander |
| Form Factor | PCIe Add-In Card (HHHL) / E1.S (platform-dependent SKU) |
| DRAM Die Process Node | SK Hynix 1b-nm class DDR5 |
| Internal DRAM Bus Width | 72-bit (64-bit data + 8-bit ECC) per rank group |
| ECC Support | On-die ECC + end-to-end ECC via CXL controller |
| Theoretical Peak Bandwidth | ~64 GB/s (PCIe 5.0 x8 bidirectional) |
| Memory Access Latency (typical) | ~200–250 ns additional latency over local DDR5 DIMM via CXL controller |
| Operating Temperature | 0°C to 55°C (commercial data-center ambient) |
| Storage Temperature | -20°C to 70°C |
| Power Consumption (typical) | ~25 W |
| Power Consumption (maximum) | ~35 W |
| RAS Features | Patrol scrubbing, poison forwarding, hardware error injection, SPDM firmware attestation |
| Management Interface | CXL Device Component Registers (DCR), SMBus/I2C SPD 5.0, MCTP over PCIe VDM |
| Compatible CPU Platforms | Intel Xeon Scalable (Sapphire Rapids and later), AMD EPYC (Genoa and later) with native CXL 2.0 root complex |
| OS & Hypervisor Support | Linux kernel 5.18+ (NUMA tiering), Windows Server 2022+, VMware vSphere 8.0 U2+ |
| Dimensions (HHHL AIC) | 167.65 mm × 111.15 mm (Half-Height Half-Length) |
| Launch Quarter | 2025-Q2 |