Product Description
IBM Power10 EM78 512GB (2 x 256GB) DDIMMs, 2933 MHz, 16Gb DDR4 Memory
The IBM EM78 512GB (2 x 256GB) DDIMMs, 2933 MHz, 16Gb DDR4 Memory (CCIN 32AE, part number 01GY925) is a high-density enterprise memory kit consisting of two 256 GB DDR4 Registered DIMMs (RDIMMs), providing a total of 512 GB capacity at 2933 MHz effective speed. This memory is optimized for IBM Power Systems servers (primarily Power9 and select Power10 models), delivering exceptional bandwidth, low latency, and RAS features for demanding AIX, IBM i, and Linux workloads such as large-scale databases, virtualization, in-memory analytics, ERP, and high-concurrency applications.
Product Description
The IBM EM78 memory kit (feature code EM78) includes two 256 GB DDR4 RDIMMs (CCIN 32AE, part number 01GY925 per DIMM) rated at 2933 MHz with ECC and advanced reliability features. These high-density modules use 16 Gb DRAM chips to achieve 256 GB per DIMM, enabling systems to scale to terabytes of memory in balanced configurations. The memory supports IBM Power10 / Power9's optimized DDR4 subsystem, including chipkill, lane sparing, dynamic sparing, predictive failure analysis, and full compatibility with PowerVM logical partitioning, IBM i native memory management, and AIX/Linux large-page support. The EM78 kit is qualified for maximum performance and RAS in Power9 and Power10 servers, making it ideal for workloads requiring massive in-memory datasets (e.g., SAP HANA, Db2, Oracle, analytics platforms, AI training/inference).
Features
- 512 GB total capacity (2 × 256 GB RDIMMs) for high memory density.
- DDR4 2933 MHz speed with ECC for error detection and correction.
- Advanced RAS: chipkill, lane sparing, dynamic sparing, and predictive failure analysis.
- Support for PowerVM logical partitioning and memory overcommit.
- IBM i large page support and AIX/Linux hugepages compatibility.
- Hot-plug and concurrent maintenance in supported configurations.
- Low power consumption relative to capacity (optimized for enterprise efficiency).
- Full IBM qualification and firmware integration for Power9 / Power10.
Technical Specifications
- Feature Code: EM78 (kit)
- CCIN: 32AE (per DIMM)
- Part Number: 01GY925 (per 256 GB DIMM)
- Capacity: 512 GB total (2 × 256 GB)
- Type: DDR4 Registered DIMM (RDIMM)
- Speed: 2933 MHz (effective rate model-dependent)
- Rank: High-density (typically 8-rank or 16-rank per DIMM)
- Voltage: 1.2 V (standard DDR4)
- ECC: Yes, with chipkill support
- Form Factor: 288-pin DIMM
- Compatibility: Power9 and select Power10 models (specific slot population rules apply)
Compatibility
The IBM EM78 512GB (2 x 256GB) DDR4 Memory kit is compatible with:
- Power Systems Models:
- Power9: S922 (9009-22A/22G), S924 (9009-42A), E950/E980, and related models supporting 2933 MHz DDR4
- Power10: Select scale-out and enterprise models with DDR4 support (e.g., S1022/S1024 in backward-compatible configurations; verify with IBM for exact model support)
- Operating Systems: IBM i 7.3+ / 7.4+ / 7.5+, AIX 7.2+ / 7.3+, Linux (RHEL/SUSE/Ubuntu), VIOS
- Attachment: Dedicated memory slots on system board (balanced population across processors required for optimal bandwidth and RAS)
- Memory Subsystem: Power9/Power10 DDR4 channels; requires matching DIMM population per IBM guidelines
- Limitations: Not supported in Power8 or earlier; not compatible with DDR5-based Power10 models; requires latest firmware for full support; must follow IBM memory population rules for maximum performance and RAS
Verify exact population rules, firmware levels, and OS requirements via IBM Sales Manual or resources for your specific Power Systems model.
Warranty
This product comes with a 60-day warranty covering parts and functionality.
