370-AHCW: Dell 64GB 2Rx4 DDR5-4800 RDIMM ECC Registered Memory
Also listed as: 0M321R8GA0BB0-CQK, M321R8GA0BB0, M321R8GA0BB0-CQK · made by Samsung
The Dell 370-AHCW is a Dell 64GB 2Rx4 DDR5-4800 RDIMM ECC Registered Memory providing 64GB capacity at DDR4-3200 across a 2Rx4 288-pin RDIMM layout. Manufactured with Samsung DRAM dies for part 370-AHCW, it delivers error-correcting memory performance for Dell PowerEdge R760, R660, R7615, R7625 servers.
Specifications
| Part number | 370-AHCW |
|---|---|
| Brand | Dell |
| Made by | Samsung |
| Type | Memory |
| Other numbers | 0M321R8GA0BB0-CQK, M321R8GA0BB0, M321R8GA0BB0-CQK |
| Status | current |
| Capacity (GB) | 64 |
| Memory type | DDR5-4800 RDIMM |
| Rank | Dual Rank (2Rx4) |
| Voltage | 1.1V |
| Ecc | Yes |
About the 370-AHCW
The Dell 370-AHCW is a Dell 64GB 2Rx4 DDR5-4800 RDIMM ECC Registered Memory providing 64GB of system memory operating at DDR4-3200 in a 2Rx4 288-pin RDIMM configuration. Built with tier-1 Samsung DRAM silicon, the 370-AHCW integrates Error-Correcting Code architecture to detect and correct single-bit memory faults in hardware. In Dell's memory portfolio, 370-AHCW provides dependable memory capacity and channel bandwidth for multi-tenant hypervisors, database servers, and HPC compute nodes.
Compatibility
The 370-AHCW module installs into standard 288-pin DIMM sockets across Dell PowerEdge platforms including R760, R660, R7615, R7625. Populating 370-AHCW 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-AHCW is governed by processor capabilities, auto-negotiating to supported memory bus frequencies.
How to identify a genuine unit
Genuine Dell 370-AHCW memory modules carry a serialized manufacturer label displaying DP/N 0M321R8GA0BB0-CQK, 64GB 2Rx4 DDR4-3200 specifications, and Samsung factory markings such as M321R8GA0BB0-CQK. In iDRAC System Memory inventory, the 370-AHCW module registers with verified Dell SPD profiles, serial number, and rank configuration. Physical DIMM PCBs on the 370-AHCW feature gold-plated edge contacts with standard anti-static substrate coatings.
Buying used
When inspecting pre-owned 370-AHCW 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-AHCW channels to verify zero single-bit or multi-bit ECC errors under maximum memory stress. Ensure all 370-AHCW modules installed within the same memory channel share matching ranks, capacities, and part numbers.
Fits these models
Equivalent part numbers
- Samsung
M321R8GA0BB0-CQK Samsung 64GB DDR5-4800MHz PC5-38400 ECC Registered CL40 2Rx4 RDIMM Server Memory Samsung 64GB 2Rx4 DDR5-4800 RDIMM OEM module
FAQ
How many 370-AHCW modules are needed for 2TB RAM in an R760?
Thirty-two 64GB modules fully populating all 32 DIMM slots (16 per processor).
What voltage does DDR5 memory operate at?
1.1V, regulated directly by the onboard PMIC chip on each DIMM.
Buying or selling 370-AHCW?
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 64GB DDR5-4800 Memory Product Details, checked 2026-10-27