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 HMA82GU7AFR8N-UH 16GB DDR4-2400T PC4-19200 2Rx8 Server Memory ModuleAvailability: Available by QuoteManufacturer: Hynix Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock - Hynix HMA84GR7DJR4N-VK 32GB DDR4-2666V PC4-21300 2Rx4 Server Memory ModuleAvailability: Available by QuoteManufacturer: Hynix Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- Hynix HMA84GR7JJR4N-WM 32GB DDR4-2933Y PC4-23400 2Rx4 Server Memory ModuleAvailability: Available by QuoteManufacturer: Hynix Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- Hynix HMAA4GR7AJR8N-XN 32GB DDR4-3200AA (PC4-25600) 2Rx8 Server Memory ModuleAvailability: Available by QuoteManufacturer: Hynix Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- Hynix HMAA8GL7AMR4N-UH 64GB DDR4-2400T-L PC4-19200 4DRx4 Server Memory ModuleAvailability: Available by QuoteManufacturer: Hynix Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- Hynix HMAA8GL7CPR4N-VK 64GB DDR4-2666V-L PC4-21300 4Rx4 Server Memory ModuleAvailability: Only 1 leftManufacturer: Hynix Condition: Refurbished 1 Year WarrantyRequest Pricing
- Hynix HMAA8GR7CJR4N-WM 64GB DDR4-2933Y PC4-23400 2Rx4 Server Memory ModuleAvailability: Available by QuoteManufacturer: Hynix Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- Hynix HMABAGL7A4R4N-VN 128GB 2S4Rx4 PC4-2666V-L DIMMAvailability: Available by QuoteManufacturer: Hynix Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- Hynix HMT41GR7AFR4C-RD 8GB 1Rx4 DDR3-1866 PC3-14900R Server Memory ModuleAvailability: Available by QuoteManufacturer: Hynix Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- Samsung M386A4G40DM1-CRC5Q 32GB DDR4-2400T-L PC4-19200 4DRx4 Memory ModuleAvailability: Available by QuoteManufacturer: Samsung Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- Samsung M386A4K40BB0-CRC 32GB DDR4-2400T PC4-19200 2Rx4 Server Memory ModuleAvailability: Available by QuoteManufacturer: Samsung Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- Samsung M386A8K40CM2-CTD 64GB DDR4-2666V-L PC4-21300 4DRx4 Server Memory ModuleAvailability: Available by QuoteManufacturer: Samsung 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.
