HMCG84MEBRA174N - 32GB DDR5-4800 ECC RDIMM | SK hynix | Server Memory
MPN: HMCG84MEBRA174N β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $190 | $190.00 |
| 10 | $185 | $1,850.00 |
| 100 | $178 | $17,800.00 |
| 500 | $172 | $86,000.00 |
| 1,000 | $165 | $165,000.00 |
Drop-in alternatives for HMCG84MEBRA174N β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
HMCG84MEBRA113N
β Drop-Inπ Reference alternative (not in catalog)
HMCG84MEBRA115N
β Drop-Inπ Reference alternative (not in catalog)
HMCG84MEBRA107N
β Drop-Inβ In Stock
$69.5 / Unit
View Datasheet βHMCG84MEBQA174N
β Drop-Inπ Reference alternative (not in catalog)
HMCG88MEBRA107N
β Drop-Inπ Reference alternative (not in catalog)
HMCG84AGBRA191N
β Drop-Inβ In Stock
$103.2 / Unit
View Datasheet βHMCG84MEBRA174N Maximum Ratings & Electrical Characteristics
| Memory Type | DDR5 SDRAM |
| Module Type | 288-Pin ECC Registered DIMM (RDIMM) |
| Capacity | 32 GB |
| Data Rate | 4800 Mbps (MT/s) |
| PC Speed Grade | PC5-38400 |
| CAS Latency | CL40 |
| Operating Voltage | 1.1 V |
| Organization | x4 |
| Rank | 1Rx4 (some distributor listings state 2Rx4 - confirm with supplier) |
| ECC | Yes (Registered with ECC, on-die ECC) |
| Peak Bandwidth | 38.4 GB/s per module |
| Form Factor | Very Low Profile (VLP) RDIMM per distributor listing |
| Number of Pins | 288 |
| Packaging | Bulk |
| Compliance | JEDEC-standard, RoHS compliant |
| Application Domain | Server / Data Center Memory |
HMCG84MEBRA174N standard Pin Configuration Guide
Complete pinout information for HMCG84MEBRA174N (standard package) with 288 pins. This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for HMCG84MEBRA174N.
Refer to the datasheet for full pin configuration.
Estimated pin count: 288 pins (digital package)
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
HMCG84MEBRA174N is suitable for 6 applications: General-Purpose 2-Socket Servers, Edge Compute Nodes, Low-VM-Density Virtualization Hosts, Cloud Infrastructure Memory Pools, Memory Upgrades and Maintenance (Aftermarket), Workstations and High-Performance Client Platforms.
General-Purpose 2-Socket Servers
The HMCG84MEBRA174N is a natural fit for mainstream dual-socket servers built on Intel Xeon Scalable or AMD EPYC platforms, where 32GB per DIMM is the most cost-efficient capacity point. Its DDR5-4800 interface provides 38.4 GB/s per module, and the registered interface allows 8-16 DIMMs per server without overloading the memory controller. Deployed in paired channels, 16 modules yield 512GB per node at CL40 latency and 1.1V, cutting memory subsystem power roughly 20-30% versus DDR4-3200 RDIMMs of equal capacity. On-die ECC plus platform ECC guards long-running virtualization workloads against silent data corruption.
Recommended
Edge Compute Nodes
Edge compute appliances benefit from the HMCG84MEBRA174N's balance of capacity, bandwidth, and thermals. The 1.1V operation and on-module PMIC reduce total memory power draw, which matters in constrained edge enclosures with limited airflow. Distributor positioning (corewavelabs, globalmemorysupply) explicitly targets edge compute hosts. A pair of these 32GB RDIMMs provides 64GB of DDR5-4800 bandwidth (76.8 GB/s aggregate across two channels), enough for container runtimes, local inference preprocessing, and real-time analytics, while on-die ECC maintains reliability in unattended environments where error scrubbing and downtime windows are limited.
Recommended
Low-VM-Density Virtualization Hosts
For virtualization hosts running moderate VM counts, 32GB RDIMMs such as the HMCG84MEBRA174N offer the best cost-per-GB granularity. CL40 CAS latency at 4800 MT/s delivers responsive performance for hypervisor overhead and guest workloads, while the registered interface supports full channel population for memory-heavy consolidation. Eight modules provide 256GB, a typical sweet spot for 20-40 light VMs. The 1.1V rail lowers idle platform power in always-on clusters, and the layered ECC (on-die plus channel CRC) reduces crash risk from cosmic-ray-induced bit flips across long uptimes. QVL-validated pairing keeps channels running at full 4800 MT/s.
Recommended
Cloud Infrastructure Memory Pools
Cloud providers standardizing on DDR5 RDIMMs use 32GB modules like the HMCG84MEBRA174N as the fungible building block for flavor sizing (small/medium instances). The part's large distributor stock - over 22,000 pieces at icDirectory and 44,000 at Octopart Canada as of August 2026 - supports bulk procurement and predictable supply chains. JEDEC-standard SPD enables automated provisioning across heterogeneous host generations. At approximately $190 per module in single-unit quantities, fleet-wide refresh economics are favorable, and RoHS compliance simplifies environmental reporting for hyperscale ESG programs. Bulk volume tiers reduce per-GB cost further at 1,000-unit quantities.
Recommended
Memory Upgrades and Maintenance (Aftermarket)
The HMCG84MEBRA174N is a frequent target for server memory upgrades: OWC and NEMIX RAM market validated third-party replacements, and eBay/reseller channels list 'HMCG84MEBRA174N equivalent' 32GB DDR5-4800 PC5-38400 modules. When refreshing an existing SK hynix-populated server, mixing this module with sibling suffixes (113N, 115N, 107N, BQA174N) is validated by these compatibility lists, protecting channel speed. IT teams should verify rank consistency (1Rx4) across existing DIMMs and confirm the platform QVL before deployment. Lifetime-warranty aftermarket options provide alternative support chains for out-of-warranty servers.
Recommended
Workstations and High-Performance Client Platforms
Select workstation platforms (Intel Xeon W, AMD Threadripper PRO) that accept RDIMMs can use the HMCG84MEBRA174N for cost-effective large memory configurations. Content creation, CAD, and simulation workloads that exceed 128GB benefit from populating eight 32GB RDIMMs for 256GB at full DDR5-4800 bandwidth. The VLP (very low profile) form factor cited in distributor listings aids clearance in compact workstation chassis with aftermarket CPU coolers. Because professional workstations enforce QVL lists, verify support for 1Rx4 x4 registered modules before purchase; in UDIMM-only consumer platforms, RDIMMs are electrically incompatible and will not boot.
Recommended
Recommended Products Summary
Engineering reference data for HMCG84MEBRA174N β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | HMCG84MEBRA113N | HMCG84MEBRA115N | HMCG84MEBRA107N | HMCG84MEBQA174N | HMCG88MEBRA107N | HMCG84AGBRA191N |
|---|---|---|---|---|---|---|---|
| Package | 288-pin RDIMM | 288-pin RDIMM - same | 288-pin RDIMM - same | 288-pin RDIMM - same | 288-pin RDIMM - same | 288-pin SDP-RDIMM - same socket | 288-pin RDIMM - same |
| Brand | SK hynix | SK hynix | SK hynix | SK hynix | SK hynix | SK hynix | SK hynix |
| Capacity | 32 GB | 32 GB | 32 GB | 32 GB | 32 GB | 32 GB | 32 GB |
| Data Rate | 4800 MT/s (PC5-38400) | 4800 MT/s | 4800 MT/s | 4800 MT/s | 4800 MT/s | 4800 MT/s | 5600 MT/s class (+17%) |
| CAS Latency | CL40 | CL40 | CL40 | CL40 | CL40 | [DATA_NEEDED] | [DATA_NEEDED] |
| Operating Voltage | 1.1 V | 1.1 V | 1.1 V | 1.1 V | 1.1 V | 1.1 V | 1.1 V |
| Rank Configuration | 1Rx4 (confirm per listing) | 1Rx4 | 1Rx4 | 1Rx4 | 1Rx4 | 2Rx4 (dual-rank) | [DATA_NEEDED] |
| ECC / Registration | Yes (ECC Registered, on-die ECC) | Yes | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Identical-spec sibling modules widely validated for interchange (vs HMCG84MEBRA113N)
- Single-rank 1Rx4 organization for lower power and simpler training (vs HMCG88MEBRA107N)
- Massive multi-distributor stock availability (vs HMCG84AGBRA191N)
Design Notes
Verify rank before deployment. Distributor listings conflict on this module's rank: several list 1Rx4 while others (e.g., harddiskdirect, essentialcircuits, etechbuy) describe 2Rx4 dual-rank. Populating one channel with 1Rx4 and another with 2Rx4 modules can cause the platform to drop to a lower common speed. Check the SPD data via BIOS or dmidecode after installation to confirm the actual rank of received lots, and keep channels homogeneous.
RDIMMs are socketed, so no PCB design work is required, but server chassis airflow matters: DDR5 modules dissipate heat via the on-module PMIC, and sustained operation above the JEDEC ambient envelope shortens retention. Maintain front-to-back airflow across DIMM banks and avoid stacking cables directly over DIMM slots. The very low profile (VLP) variant cited in listings improves clearance in 1U chassis; confirm the height variant shipped matches your chassis specification.
Never mix RDIMMs with UDIMMs or LRDIMMs on the same platform or channel - the registering buffer makes them electrically incompatible with unbuffered sockets and the system will fail to POST. When expanding an existing server populated with HMCG84-series modules, prefer same-family suffixes (113N/115N/107N/BQA174N) validated as compatible by OWC and NEMIX replacement lists. After installation, run a full memory test (POST memory training plus a multi-pass test) to confirm stable operation at 4800 MT/s.
Compliance Information
OWC compatibility listing states 'JEDEC-Standard and ROHS Compliant' for modules validated against HMCG84MEBRA174N. REACH/halogen-free/conflict-minerals status requires the manufacturer material declaration for the specific date code.
