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Supermicro (M393A8G40AB2-CWE) 64GB SDRAM ECC Registered DDR4 3200 (PC4-25600) ...
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SuperMicro 8GB 288-Pin DDR4 SDRAM ECC Registered DDR4 3200 (PC4 25600) Server ...
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Supermicro (HMA84GR7CJR4N-XN) 32GB SDRAM ECC Registered DDR4 3200 (PC4 25600) ...
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Supermicro (MTA36ASF4G72PZ-2G9E2) 32GB SDRAM ECC Registered DDR4 2933 (PC4 ...
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Kingston ME KSM32ES8 8HD 8GB 3200MHz DDR4 ECC CL22 DIMM 1Rx8 Hynix D Retail
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SuperMicro (M393A8G40MB2-CVF) 64GB 288-Pin DDR4 SDRAM ECC Registered DDR4 2933 ...
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Samsung 32GB 288-Pin DDR4 2666 (PC4 21300) RDIMM 1.2V Server Memory Model ...
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SAMSUNG DIMM 16GB 288-Pin DDR4 SDRAM ECC REG Registered DDR4 2400 (PC4 19200) ...
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HMAA4GU7AJR8N-WM Hynix Replacement 32GB DDR4-2933 PC4-23400 ECC Unbuffered ...
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Crucial 32GB 288-Pin DDR4 SDRAM ECC Registered DDR4 2933 (PC4 23400) Server Memory ...
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HP 669324-B21 8GB (1x8GB) DDR3 1600 (PC3 12800) ECC Unbuffered UDIMM Memory by ...
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8GB SK Hynix ECC DDR4 1Rx8 PC4-2400T-RD1-11 HMA81GR7AFR8N-UH TD AC RAM Server ...
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Synology - D4EC-2666-16G - Synology 16GB DDR4 SDRAM Memory Module - For NAS Server - ...
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D4ECSO-2666-16G DDR4 ECC SO-DIMM 2666 Memory for DiskStation DS1819+
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Micron MTA36ASF4G72PZ-2G6 32GB DDR4 2666 (PC4-21300) 1.2V 288-PIN SDRAM Server ...
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NMA1XBD128GQS Intel 128GB PC4-21300 DDR4-2666MHz CL19 Persistent Optane DIMM ...
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Black Diamond Memory 64GB (2 x 32GB) 288-Pin DDR4 SDRAM ECC Registered DDR4 2133 ...
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Micron CT16G4WFD8266 Crucial Memory CT16G4WFD8266 16GB DDR4 2666 CL19 DR x8 ...
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Crucial 16GB DDR4 SDRAM ECC Unbuffered DDR4 2666 (PC4 21300) Server Memory ...
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HP 850880-001 16GB (1x16GB) DDR4 2666 (PC4 21300) ECC Registered RDIMM Memory by ...
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Differences between Desktop and Server Memory

Introduction

While many servers are compatible with both desktop and server memory, it is advantageous to use server RAM. Compared to desktop memory, computer server RAM has two major features make it more suited for the needs of servers. Those two major features are error correction code (ECC) and registered memory. Below, NeweggBusiness will detail why those two features are important for servers.

Error Correction Code (ECC)

It can sometimes also be referred to as error-correcting code. ECC is a feature that checks for and corrects errors in memory automatically without requiring input from the processor, operating system, or user. When data is saved onto server RAM, an algorithm generates a code that describes the data. The code is then saved along with the data. When the data is retrieved later, the RAM runs the same algorithm again. If the newly calculated code does not match the code stored with the data, the RAM attempts to repair the data by comparing the codes.

ECC memory has slightly slower performance than non-ECC memory, but increases system stability and reduces the likelihood of data corruption. It is important to not install ECC memory and non-ECC memory in the same system, or use it with a motherboard that does not support ECC. Doing either will result in ECC being disabled and may cause system instability.

Registry

Registered memory is a type of memory that has a hardware register between the RAM chips and the system memory controller. The register is a component that delays the transfer of data between the RAM and system memory controller to increase stability. Without a hardware register, the stability of the server RAM would decrease as the amount of memory increases. Registered memory allows for more RAM to be put onto one module without sacrificing stability.

Registered memory has slower performance than non-registered memory but is available in larger capacities. In an environment where quantity is preferred over performance, registered memory is the best option.

Load-Reduced Dual In-line Memory Module (LR-DIMM or LRDIMM)

A type of memory that allows for even more RAM chips on one module than registered memory. LR-DIMM memory utilizes a buffer instead of a register to support the increased memory. On the upper end of the price spectrum, LR-DIMM memory is mostly used by organizations with larger IT budgets.