DDR4 Server Memory Solutions
DDR4 ECC RDIMMs and LRDIMMs — In Stock for 14th and 15th Gen Servers
Enterasource stocks DDR4 ECC registered DIMMs (RDIMMs) and load-reduced DIMMs (LRDIMMs) for Dell PowerEdge 14th and 15th generation servers and HPE ProLiant Gen 9 and Gen 10. DDR4 server memory operates at 2133, 2400, 2666, and 3200 MT/s depending on the processor and platform. All memory is tested with full diagnostic passes before listing — not just visually inspected.
RDIMMs (Registered DIMMs) are the standard choice for most server deployments up to 1.5TB total per 2-socket server. LRDIMMs (Load-Reduced DIMMs) use a buffer chip to reduce the electrical load on the memory controller, enabling higher DIMM counts and maximum memory configurations (up to 3TB for R640, up to 8TB for R750) that would not be possible with RDIMMs alone.
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Hynix HMA82GR7AFR8N-UH 16GB DDR4-2400T PC4-19200T 2Rx8 ECC Server Memory ModuleAvailability: Available by QuoteManufacturer: Hynix Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock - Samsung M386A4G40DM0-CPB 32GB DDR4L-2133 PC4L-17000 4DRx4 Server Memory ModuleAvailability: Available by QuoteManufacturer: Samsung Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- Samsung M393A4K40CB2-CTD 32GB DDR4-2666 PC4-21333 2Rx4 ECC Server Memory ModuleAvailability: Available by QuoteManufacturer: Samsung Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- Micron MTA18ASF2G72PDZ-2G3B 16GB DDR4-2400T PC4-19200T 2Rx8 Server Memory ModuleAvailability: Available by QuoteManufacturer: Micron Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- HPE 840758-091 32GB DDR4-2666 PC4-21333 2Rx4 ECC Server Memory ModuleAvailability: Available by QuoteManufacturer: HPE Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- Hynix HMA81GR7AFR8N-VK 8GB DDR4-2666 PC4-21333 1Rx8 ECC Server Memory ModuleAvailability: Available by QuoteManufacturer: Hynix Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- Hynix HMA42GR7MFR4N-TF 16GB DDR4-2133 PC4-17000 2Rx4 ECC Server Memory ModuleAvailability: Available by QuoteManufacturer: Hynix Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- Samsung M393A2G40DB0-CPB 16GB DDR4-2133 PC4-17000 2Rx4 ECC Server Memory ModuleAvailability: Available by QuoteManufacturer: Samsung Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- HP 752372-081 32GB DDR4L-2133 PC4L-17000 4Rx4 ECC Server Memory ModuleAvailability: Available by QuoteManufacturer: HPE Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- HPE 809083-091 32GB DDR4-2400T PC4-19200T 2Rx4 ECC Server Memory ModuleAvailability: Available by QuoteManufacturer: HPE Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- Samsung M393A4K40BB1-CRC4Q 32GB DDR4-2400T PC4-19200T 2Rx4 Server Memory ModuleAvailability: Available by QuoteManufacturer: Samsung Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- HPE 840756-091 16GB DDR4-2666 PC4-21333 2Rx8 ECC Server Memory ModuleAvailability: Available by QuoteManufacturer: HPE Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
Choosing DDR4 Server Memory: RDIMM vs LRDIMM
| Type | Capacity per DIMM | Max per 2-socket server | Performance | Best For |
|---|---|---|---|---|
| DDR4 RDIMM | 8GB–64GB | Up to 1.5TB (24 slots x 64GB) | Standard — no latency penalty | Most virtualization, database, and general workloads |
| DDR4 LRDIMM | 64GB–128GB+ | Up to 3TB+ (24 slots x 128GB) | Slightly higher latency vs RDIMM | In-memory databases, maximum-density VM hosts |
For most VMware vSphere, Hyper-V, and database deployments, DDR4 RDIMMs at 32GB or 64GB per DIMM provide the right balance of capacity and cost. LRDIMMs are worth the price premium when you need to maximize total system memory — for example, when running SAP HANA, Microsoft SQL Server with large in-memory tables, or very high VM densities.
- Is DDR4 memory compatible with 16th gen Dell PowerEdge servers?
- No. Dell PowerEdge 16th generation servers (R660, R760, R760xs) use DDR5 memory exclusively. DDR4 is compatible with 14th gen (R640, R740, R740xd) and 15th gen (R650, R750) servers. Browse DDR5 memory for 16th gen platforms.
- What speeds does DDR4 server memory run at?
- DDR4 server memory runs at 2133, 2400, 2666, or 3200 MT/s depending on the processor generation. 14th gen Intel Xeon Scalable supports DDR4-2666; 15th gen (Ice Lake-SP) supports DDR4-3200. Higher-speed DIMMs are backward compatible and will run at the maximum speed supported by the processor.
