370-AHCX: Dell 128GB DDR5-4800 Quad Rank RDIMM 288-pin Memory Module
Also listed as: 071G4N, 71G4N, M321RGA80BB0-CQK, HMCG98MEBRA113N · made by Samsung
The Dell 370-AHCX is a Dell 128GB DDR5-4800 Quad Rank RDIMM 288-pin Memory Module providing 128GB capacity at DDR5-4800 across a 4Rx4 288-pin DDR5 RDIMM layout. Manufactured with Samsung DRAM dies for part 370-AHCX, it delivers error-correcting memory performance for Dell PowerEdge R760, R660, R7615, R7625 servers.
Specifications
| Part number | 370-AHCX |
|---|---|
| Brand | Dell |
| Made by | Samsung |
| Type | Memory |
| Other numbers | 071G4N, 71G4N, M321RGA80BB0-CQK, HMCG98MEBRA113N |
| Status | current |
| Capacity (GB) | 128 |
| Speed | DDR5-4800 |
| Rank width | 4Rx4 |
| Form factor | 288-pin DDR5 RDIMM |
| Tdp (W) | 16 |
About the 370-AHCX
The Dell 370-AHCX is a Dell 128GB DDR5-4800 Quad Rank RDIMM 288-pin Memory Module providing 128GB of system memory operating at DDR5-4800 in a 4Rx4 288-pin DDR5 RDIMM configuration. Built with tier-1 Samsung DRAM silicon, the 370-AHCX integrates Error-Correcting Code architecture to detect and correct single-bit memory faults in hardware. In Dell's memory portfolio, 370-AHCX provides dependable memory capacity and channel bandwidth for multi-tenant hypervisors, database servers, and HPC compute nodes.
Compatibility
The 370-AHCX module installs into standard 288-pin DIMM sockets across Dell PowerEdge platforms including R760, R660, R7615, R7625. Populating 370-AHCX requires adherence to platform channel balancing rules, and mixing Registered RDIMMs with Load-Reduced LRDIMMs or unbuffered memory within the same system is prohibited. Operating speed of the 370-AHCX is governed by processor capabilities, auto-negotiating to supported memory bus frequencies.
How to identify a genuine unit
Genuine Dell 370-AHCX memory modules carry a serialized manufacturer label displaying DP/N 071G4N, 128GB 4Rx4 DDR5-4800 specifications, and Samsung factory markings such as M321RGA80BB0-CQK. In iDRAC System Memory inventory, the 370-AHCX module registers with verified Dell SPD profiles, serial number, and rank configuration. Physical DIMM PCBs on the 370-AHCX feature gold-plated edge contacts with standard anti-static substrate coatings.
Buying used
When inspecting pre-owned 370-AHCX memory modules, examine the edge connector contacts for scratches, bent traces, or missing surface bypass capacitors. Run Dell ePSA embedded diagnostics or Memtest86+ across all 370-AHCX channels to verify zero single-bit or multi-bit ECC errors under maximum memory stress. Ensure all 370-AHCX modules installed within the same memory channel share matching ranks, capacities, and part numbers.
Fits these models
- Dell PowerEdge R760
- Dell PowerEdge R660
- Dell PowerEdge R7615
- Dell PowerEdge R7625
- Dell PowerEdge R860
- Dell PowerEdge R960
Equivalent part numbers
- Samsung M321RGA80BB0-CQK Samsung 128GB DDR5-4800 Registered ECC DIMM OEM base
FAQ
Why do DDR5 modules feature an onboard PMIC?
DDR5 moves power management from the motherboard onto the DIMM itself via a Power Management IC (PMIC), improving voltage regulation and signal purity.
Can DDR5 DIMMs be inserted into DDR4 slots?
No, DDR5 has a different key notch position, pin layout, and voltage specification than DDR4.
Buying or selling 370-AHCX?
New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.
Sources
- Dell 128GB DDR5-4800 RDIMM Specifications, checked 2026-10-27