HMCG78MEBRA102N - SK Hynix HMCG78MEBRA102N 16GB DDR5-4800 ECC RDIMM Memory

Name: SK Hynix HMCG78MEBRA102N 16GB DDR5-4800 ECC RDIMM Memory
Brand: Hynix
SKU: HMCG78MEBRA102N
Price: 740 USD
Availability: InStock

HMCG78MEBRA102N - SK Hynix HMCG78MEBRA102N 16GB DDR5-4800 ECC RDIMM Memory | US IT Hardware

Product overview

The SK Hynix HMCG78MEBRA102N is an enterprise-grade 16GB DDR5 ECC registered memory module designed for mission-critical server environments requiring maximum reliability and data integrity. Operating at 4800MT/s with PC5-38400 specification, this module delivers significantly higher bandwidth compared to DDR4 predecessors, enabling modern CPUs to process larger datasets and handle more simultaneous workloads with reduced latency. The module features CL40 latency timing, 1.1V operating voltage, and single-rank (1Rx8) configuration optimizing signal integrity across modern memory controllers. Integrated ECC protection at both the module level and on-die DRAM level ensures end-to-end error detection and correction, critical for virtualization, database servers, and analytics platforms. The 288-pin RDIMM form factor with registered buffering supports efficient memory access patterns in dual- and quad-channel server architectures. Fully compliant with JEDEC DDR5 specifications, this module integrates seamlessly with validated enterprise platforms from Dell, HPE, Lenovo, and IBM. Ideal for data centers, enterprise server deployments, edge computing platforms, and professional workstations where uptime and data integrity are non-negotiable requirements.

16GB DDR5-4800 ECC Registered RDIMM.
CL40 latency, 1.1V, 1Rx8 configuration.
Dual-layer ECC: on-die + module-level.
JEDEC DDR5 standard compliant.
Compatible with Dell, HPE, Lenovo servers.
3.2W active, 0.6W idle power consumption.

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Purchase orders accepted from qualified institutions.
Refunds within 14 days and replacements within 30 days of delivery with an RMA (25% restocking fee on customer-initiated returns), and every part carries our Standard 30-Day Warranty - see our return policy or contact US IT Hardware.

Featuring

JEDEC Compliance
Manufacturer part #	HMCG78MEBRA102N
Brand	Hynix
Condition	Refurbished
Speed	4800MT/s ¦ PC5-38400 ¦ DDR5-4800
Latency	CL40 (40 clock cycles)
Voltage	1.1V (±0.05V operating range)
Capacity	16GB (16,384MB)
Memory Type	DDR5 SDRAM ¦ ECC Enabled ¦ Registered (RDIMM)
Compatibility	JEDEC DDR5 Standard ¦ Dell PowerEdge ¦ HPE ProLiant ¦ Lenovo ThinkSystem ¦ IBM Power Systems
Error Detection	ECC (Error Correcting Code) ¦ On-die ECC + Module-level ECC

Compatible systems

The HMCG78MEBRA102N is fully compatible with current-generation enterprise server platforms from Dell, HPE, Lenovo, and IBM featuring DDR5-capable processors. Supports Windows Server, VMware ESXi, and major Linux distributions. Requires Intel Xeon Scalable 4th Gen or AMD EPYC 9004-series processors with DDR5-capable chipsets.

Dell PowerEdge
Model: R750
Form factor: 2U Rack
Generation: 15th Gen
Full support with latest BIOS. Supports up to 12 DIMM slots for 192GB maximum capacity.
Dell PowerEdge
Model: R760
Form factor: 2U Rack
Generation: 16th Gen
Full support with BIOS A14 or later. Validated for dual-socket configurations.
HPE ProLiant
Model: DL380 Gen11
Form factor: 2U Rack
Generation: 11th Gen
Full support with latest firmware. Compatible with iLO 6 management.
Lenovo ThinkSystem
Model: SR650
Form factor: 2U Rack
Generation: V2
Full support with XCC firmware v2.1 or later.
Lenovo ThinkSystem
Model: SR670
Form factor: 2U Rack
Generation: V3
Full support with latest XCC firmware.
IBM System x

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Signal Processing	Registered (Buffered) ¦ Unbuffered configuration available in variant models

Rank Configuration	1Rx8 (Single Rank) ¦ 2Gx8 DRAM organization

Power Consumption	Active: 3.2W ¦ Idle: 0.6W ¦ Standby: 0.15W

Form Factor	288-pin RDIMM ¦ 1Rx8 (Single Rank)
Physical Dimensions	133.35mm (L) x 31.25mm (H) x 13.5mm (D)

Storage Temperature	-40°C to 100°C (-40°F to 212°F)
Operating Temperature	0°C to 85°C (32°F to 185°F)

Frequently asked questions

What is the performance difference between DDR5-4800 and DDR4 memory?

DDR5-4800 delivers 4800 megatransfers per second compared to typical DDR4-3200 at 3200MT/s, providing 50% higher bandwidth. While CL40 latency is higher than DDR4-16, the substantially increased bandwidth results in superior real-world performance for bandwidth-intensive workloads including virtualization, analytics, and in-memory databases. The 1.1V operating voltage is also lower than DDR4, reducing power consumption.

How does the dual-layer ECC protection work in this module?

The HMCG78MEBRA102N features on-die ECC within each DRAM chip plus module-level ECC at the memory controller interface. On-die ECC improves manufacturing yields and internal reliability; module-level ECC ensures end-to-end data integrity from memory controller to DRAM cells. This layered approach provides maximum protection against single-bit errors, critical for mission-critical applications where data corruption is unacceptable.

Which enterprise servers support this memory module?

This module is validated for Dell PowerEdge R750/R760 (15th/16th Gen), HPE ProLiant DL380 Gen11, Lenovo ThinkSystem SR650/SR670 (V2/V3), and IBM enterprise systems with DDR5-capable processors. Full compatibility requires Intel Xeon Scalable 4th Gen or newer, or AMD EPYC 9004-series processors. Check your server's BIOS version for latest memory support lists.

What is the power consumption impact of upgrading to DDR5?

The HMCG78MEBRA102N consumes 3.2W active and 0.6W idle, approximately 20-30% lower than comparable DDR4 modules. In large-scale deployments with hundreds of servers, this reduction significantly impacts operational costs and cooling requirements. For a 1000-server data center, DDR5 memory can reduce annual power costs by thousands of dollars.

Is this module suitable for virtualization platforms?

Yes, the ECC protection and registered configuration make this module ideal for VMware vSphere, Microsoft Hyper-V, and KVM hypervisors. ECC memory ensures guest OS stability and prevents memory-related data corruption across multiple virtual machines. The 16GB capacity supports balanced memory allocation across numerous VMs in enterprise virtualization environments.

What JEDEC standards does this module comply with?

The HMCG78MEBRA102N is fully compliant with JEDEC DDR5 standard JESD79-5 specification, ensuring predictable behavior across validated platforms. JEDEC compliance guarantees interoperability with enterprise server platforms and reduces deployment risk in heterogeneous IT environments. This standardization simplifies procurement and qualification processes.

Can this memory be mixed with other DDR5 modules in the same server?

Yes, multiple HMCG78MEBRA102N modules can be populated in available DIMM slots to scale memory capacity. For optimal performance, populate matching modules in balanced configurations across memory channels. Mixing different DDR5 speeds or latencies may result in the system running at the lowest common denominator speed, reducing performance.

SK Hynix HMCG78MEBRA102N 16GB DDR5-4800 ECC RDIMM Memory

Product overview

Featuring

Compatible systems

Details

Shipping, warranty & returns

Customer reviews

Power Consumption

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Frequently asked questions