370-AAFX: Dell 64GB DDR4-2933 Quad Rank LRDIMM 288-pin Memory Module
Also listed as: 01R80N, 1R80N, M386A8K40CM2-CVF, HMAA8GL7AMR4N-WM · made by Samsung
The Dell 370-AAFX is a Dell 64GB DDR4-2933 Quad Rank LRDIMM 288-pin Memory Module providing 64GB capacity at DDR4-2933 across a 4Rx4 288-pin LRDIMM layout. Manufactured with Samsung DRAM dies for part 370-AAFX, it delivers error-correcting memory performance for Dell PowerEdge R740, R740XD, R640, R840 servers.
Specifications
| Part number | 370-AAFX |
|---|---|
| Brand | Dell |
| Made by | Samsung |
| Type | Memory |
| Other numbers | 01R80N, 1R80N, M386A8K40CM2-CVF, HMAA8GL7AMR4N-WM |
| Status | end of sale |
| Capacity (GB) | 64 |
| Speed | DDR4-2933 |
| Rank width | 4Rx4 |
| Form factor | 288-pin LRDIMM |
| Tdp (W) | 8 |
About the 370-AAFX
The Dell 370-AAFX is a Dell 64GB DDR4-2933 Quad Rank LRDIMM 288-pin Memory Module providing 64GB of system memory operating at DDR4-2933 in a 4Rx4 288-pin LRDIMM configuration. Built with tier-1 Samsung DRAM silicon, the 370-AAFX integrates Error-Correcting Code architecture to detect and correct single-bit memory faults in hardware. In Dell's memory portfolio, 370-AAFX provides dependable memory capacity and channel bandwidth for multi-tenant hypervisors, database servers, and HPC compute nodes.
Compatibility
The 370-AAFX module installs into standard 288-pin DIMM sockets across Dell PowerEdge platforms including R740, R740XD, R640, R840. Populating 370-AAFX 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-AAFX is governed by processor capabilities, auto-negotiating to supported memory bus frequencies.
How to identify a genuine unit
Genuine Dell 370-AAFX memory modules carry a serialized manufacturer label displaying DP/N 01R80N, 64GB 4Rx4 DDR4-2933 specifications, and Samsung factory markings such as M386A8K40CM2-CVF. In iDRAC System Memory inventory, the 370-AAFX module registers with verified Dell SPD profiles, serial number, and rank configuration. Physical DIMM PCBs on the 370-AAFX feature gold-plated edge contacts with standard anti-static substrate coatings.
Buying used
When inspecting pre-owned 370-AAFX 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-AAFX channels to verify zero single-bit or multi-bit ECC errors under maximum memory stress. Ensure all 370-AAFX modules installed within the same memory channel share matching ranks, capacities, and part numbers.
Fits these models
Equivalent part numbers
- Samsung M386A8K40CM2-CVF Samsung 64GB DDR4-2933 Load-Reduced DIMM OEM base
FAQ
Can I mix this 64GB LRDIMM with 32GB registered RDIMMs?
No, registered DIMMs (RDIMMs) and load-reduced DIMMs (LRDIMMs) cannot be mixed within the same server system.
Does this memory run at 2933 MT/s with 1st Gen Xeon Scalable CPUs?
First-generation Intel Xeon Scalable (Skylake-SP) processors cap memory speed at 2666 MT/s; 2933 MT/s requires 2nd Gen Cascade Lake CPUs.
Buying or selling 370-AAFX?
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 PowerEdge R740 System Memory Guidelines and LRDIMM Configuration, checked 2026-10-27