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UCS-ML-X32G2RS-H - Cisco Compatible 32GB PC4-21300 DDR4-2666MHz 2Rx4 1.2V ECC ...
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4ZC7A15121 - Lenovo Compatible 16GB PC4-25600 DDR4-3200Mhz 2Rx8 1.2v ECC ...
$239 .45
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P19040-B21 - HP Compatible 8GB PC4-23400 DDR4-2933Mhz 1Rx8 1.2v ECC Registered ...
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4VN06UT - HP Compatible 8GB PC4-21300 DDR4-2666MHz 1Rx8 1.2v Non-ECC SODIMM
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Q2D33A - HP Compatible 64GB PC4-21300 DDR4-2666Mhz 4Rx4 1.2v ECC LRDIMM
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P05588-B21 - HP Compatible 16GB PC4-21300 DDR4-2666MHz 2Rx8 1.2V ECC Registered ...
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AA335286 - Dell Compatible 8GB PC4-21300 DDR4-2666MHz 2Rx8 1.2V ECC UDIMM
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6VDX7 - Dell Compatible 8GB PC4-25600 DDR4-3200Mhz 1Rx8 1.2v Non-ECC SODIMM
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P39382-001 - HP Compatible 32GB PC4-23400 DDR4-2933Mhz 1Rx4 ECC Registered ...
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AB675798 - Dell Compatible 32GB PC4-25600 DDR4-3200Mhz 2Rx8 ECC Registered RDIMM
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P07782-001 - HPE Compatible 32GB PC4-21300 DDR4-2666Mhz 2Rx8 1.2v ECC Registered ...
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RC9V6 - Dell Compatible 8GB PC4-25600 DDR4-3200Mhz 1Rx8 1.2v ECC Registered RDIMM
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P14117-B21 - HPE Compatible 16GB PC4-23400 DDR4-2933Mhz 1Rx4 ECC Registered ...
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AB133482 - Dell Compatible 8GB PC4-25600 DDR4-3200Mhz 1Rx8 1.2v Non-ECC UDIMM
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P38446-B21 - HPE Compatible 32GB PC4-23400 DDR4-2933Mhz 1Rx4 1.2v ECC Registered ...
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882362?091 - HPE Compatible 64GB PC4-21300 DDR4-2666Mhz 4Rx4 1.2v 288-Pin DDR4 ...
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P43019-B21 - HPE Compatible 16GB DDR4-3200Mhz 1Rx8 ECC UDIMM
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P63345?B21 - HPE Compatible 128GB DDR5-4800Mhz 4Rx4 ECC Registered RDIMM
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P14119-H21 - HPE Compatible 16GB DDR4-2933Mhz 2Rx8 ECC Registered RDIMM
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4X71D07932 - Lenovo Compatible 32GB DDR4-3200Mhz 2Rx8 Non-ECC UDIMM
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Micron 48GB DDR5 5600 MHz PC5-44800 CL46 DIMM 288-pin registered Model ...
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Micron 32GB (1 x 32GB) DDR5 SDRAM PC5-44800 5600MHz CL46 ECC Registered Server and ...
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AB883073 - Dell Compatible 8GB DDR5-4800Mhz 1Rx16 Non-ECC UDIMM
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P39381-001 - HPE Compatible 32GB DDR4-3200Mhz 1Rx4 ECC Registered RDIMM
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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.