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2TB Kit 8x256GB DDR4-3200 PC4-25600 ECC Registered 8Rx4 Memory for ...
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Kingston Premier Series 16GB 288-Pin DDR4 SDRAM ECC Unbuffered DDR4 3200 (PC4 ...
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Samsung 32GB 288-Pin DDR4 2666 (PC4 21300) RDIMM 1.2V Server Memory Model ...
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16GB(2X8GB) SK Hynix ECC DDR4 1Rx8 PC4-2400T-RD1-11 HMA81GR7AFR8N-UH TD AC ...
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1TB Kit 8x128GB DDR4-2666 PC4-21300 ECC Registered 8Rx4 Server Memory by NEMIX RAM
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Crucial 32GB 288-Pin DDR4 SDRAM ECC Registered DDR4 2933 (PC4 23400) Server Memory ...
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Micron 16GB DDR4 3200 ECC/REG CL22 1Rx8 1.2V SDRAM RDIMM Server Memory Module - ...
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Mushkin Enhanced Proline 16GB 288-Pin DDR4 SDRAM ECC Registered DDR4 2133 (PC4 ...
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NEMIX RAM 128GB Replacement for Samsung M393AAG40M3B-CYF DDR4-2933 ECC RDIMM ...
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KINGSTON 64GB 3200MT/s DDR4 ECC Reg CL22 DIMM 2Rx4 Micron F Rambus
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16GB DDR4 2666 ECC UDIMM (Synology D4EC-2666-16G Equivalent) Server Memory RAM by ...
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SK hynix HMA81GU7AFR8N-UH 8GB 1Rx8 PC4-2400T-ED2-11 For server
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HP 840756-191 16GB (1x16GB) DDR4 2666 (PC4 21300) ECC Registered RDIMM Memory by ...
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Kingston Premier Series 8GB 288-Pin DDR4 SDRAM ECC Unbuffered DDR4 3200 (PC4 25600) ...
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Kingston 16GB 1Rx4 PC4-2666 CL19 Registered w/ Parity 288-Pin DIMM, KSM26RS4/16HAI
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Samsung M378B5173EB0-YK0
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AA810828 - Dell Compatible 64GB PC4-25600 DDR4-3200Mhz 2Rx4 1.2v 288-Pin DDR4 ...
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Crucial server memory 64GB 2x32GB DDR4-3200 PC4-25600 2Rx4 ECC Registered Server ...
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128GB Kit (4 x 32GB) DDR4-3200 PC4-25600 ECC Registered Memory for ASRock Rack ...
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NEMIX RAM 32GB Replacement for Samsung M393A4K40DB3-CWE DDR4-3200 ECC RDIMM ...
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NEMIX RAM MEM-DR464MC-ER32 64GB Replacement Memory for Supermicro
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Crucial 64GB (4 x 16GB) 288-Pin DDR4 SDRAM ECC Registered DDR4 2133 (PC4 17000) Server ...
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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.