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Black Diamond Memory 16GB 288-Pin DDR4 SDRAM ECC Registered DDR4 2400 (PC4 19200) Server Memory Model BD16G2400MQR26
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Black Diamond Memory 64GB (2 x 32GB) 240-Pin DDR3 SDRAM ECC Load Reduced DDR3 1866 (PC3 14900) Server Memory Model BD32GX21866MTR96
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Crucial 32GB (2 x 16GB) 240-Pin DDR3 SDRAM ECC Registered DDR3 1600 (PC3 12800) Server Memory Model CT2K16G3ERSLD4160B
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Crucial 32GB (2 x 16GB) 240-Pin DDR3 SDRAM ECC Registered DDR3 1600 (PC3 12800) Server Memory Model CT2K16G3ERSLD4160B
  • CAS Latency: 11
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Kingston 32GB DDR4 3200Mhz CL22 2Rx8 ECC Unbuffered Memory RAM DIMM Module - KSM32ED8/32ME
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Kingston 32GB DDR4 3200Mhz CL22 2Rx8 ECC Unbuffered Memory RAM DIMM Module - KSM32ED8/32ME
  • Chipset: Micron Chipset
  • CAS Latency: 22
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NEMIX RAM 32GB Replacement for Samsung M393A4K40DB3-CWE DDR4-3200 ECC RDIMM 2Rx4
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NEMIX RAM 32GB Replacement for Samsung M393A4K40DB3-CWE DDR4-3200 ECC RDIMM 2Rx4
  • Chipset: Major Brand Chipset
  • CAS Latency: 22
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  • Model #: 759170817504
  • Item #: 9SIA7S6ADS6096
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Crucial 32GB DDR4 2666 (PC4-21300) SDRAM Server Memory ECC Registered
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Crucial 32GB DDR4 2666 (PC4-21300) SDRAM Server Memory ECC Registered
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  • CAS Latency: 19
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  • Model #: CT32G4RFD4266
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Crucial 64GB (4 x 16GB) 288-Pin DDR4 SDRAM ECC Registered DDR4 2133 (PC4 17000) Server Memory Model CT4K16G4RFD4213
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Crucial 64GB (4 x 16GB) 288-Pin DDR4 SDRAM ECC Registered DDR4 2133 (PC4 17000) Server Memory Model CT4K16G4RFD4213
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Crucial 16GB 288-Pin DDR4 SDRAM ECC Registered DDR4 2666 (PC4 21300) Server Memory Model CT16G4RFD4266
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Crucial 16GB 288-Pin DDR4 SDRAM ECC Registered DDR4 2666 (PC4 21300) Server Memory Model CT16G4RFD4266
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Crucial 16GB DDR4 2666 (PC4-21300) CL19 ECC Unbuffered SODIMM CT16G4TFD8266
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Crucial 16GB DDR4 2666 (PC4-21300) CL19 ECC Unbuffered SODIMM CT16G4TFD8266
Crucial 32GB (2 x 16GB) 288-Pin DDR4 SDRAM ECC Registered DDR4 2133 (PC4 17000) Server Memory Model CT2K16G4RFD4213
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32GB Kit 2x16GB DDR4-3200 PC4-25600 ECC UDIMM 2Rx8 Memory for Server/Workstation by NEMIX RAM
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32GB Kit 2x16GB DDR4-3200 PC4-25600 ECC UDIMM 2Rx8 Memory for Server/Workstation by NEMIX RAM
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  • Model #: ME25600-628K02-G
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Crucial 16GB DDR4 SDRAM ECC Unbuffered DDR4 2666 (PC4 21300) Server Memory CT16G4WFD8266
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Crucial 16GB DDR4 SDRAM ECC Unbuffered DDR4 2666 (PC4 21300) Server Memory CT16G4WFD8266
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  • CAS Latency: 19
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  • Model #: CT16G4WFD8266
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Crucial 16GB (2 x 8GB) 240-Pin DDR3 SDRAM ECC Unbuffered DDR3L 1600 (PC3L 12800) Server Memory Model CT2KIT102472BD160B
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Crucial 16GB (2 x 8GB) 240-Pin DDR3 SDRAM ECC Unbuffered DDR3L 1600 (PC3L 12800) Server Memory Model CT2KIT102472BD160B
  • Chipset: Micron Chipset
  • CAS Latency: 11
  • Voltage: 1.35V
  • Multi-channel Kit: Dual Channel Kit
  • Model #: CT2KIT102472BD160B
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Synology D4ECSO-2666-16G Equivalent 16GB DDR4 2666 ECC SODIMM Server Memory RAM
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NEMIX RAM 64GB 2x32GB DDR4-3200 PC4-25600 2Rx8 ECC Unbuffered Memory
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NEMIX RAM 64GB 2x32GB DDR4-3200 PC4-25600 2Rx8 ECC Unbuffered Memory
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  • Model #: ME25600-328K02-G
  • Item #: 9SIA7S6AZC2745
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Micron 64GB DDR4 3200 8Gx72 ECC CL22 RDIMM Server Memory Module - MTA36ASF8G72PZ-3G2B2
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Micron 64GB DDR4 3200 8Gx72 ECC CL22 RDIMM Server Memory Module - MTA36ASF8G72PZ-3G2B2
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Kingston 32GB DDR4 2666MHz 288pin DIMM ECC Reg Memory Module KSM26ED8/32ME
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Kingston 32GB DDR4 2666MHz 288pin DIMM ECC Reg Memory Module KSM26ED8/32ME
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Crucial 32GB 288-Pin DDR4 SDRAM ECC Registered DDR4 3200 (PC4 25600) Server Memory Model CT32G4RFD432A
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16GB DDR4 2666 ECC UDIMM (Synology D4EC-2666-16G Equivalent) Server Memory RAM by Crucial or Micron
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Micron Technology, Inc.
16GB DDR4 2666 ECC UDIMM (Synology D4EC-2666-16G Equivalent) Server Memory RAM by Crucial or Micron
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  • Voltage: 1.20V
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  • Model #: MEC28
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Crucial 16GB 288-Pin DDR4 SDRAM ECC Unbuffered DDR4 2666 (PC4 21300) Server Memory Model CT16G4XFD8266
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Crucial 32GB 288-Pin DDR4 SDRAM ECC Registered DDR4 2933 (PC4 23400) Server Memory Model CT32G4RFD4293
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Crucial 16GB 288-Pin DDR4 SDRAM ECC Registered DDR4 2933 (PC4 23400) Server Memory Model CT16G4RFS4293
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SK Hynix HMA81GR7CJR8N-XN  8GB DDR4 1RX8 PC4-3200AA ECC For server
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Crucial 8GB DDR4 2400 (PC4 19200) 288-Pin UDIMM 1Rx8 ECC Unbuffered CL17 1.2v Desktop Memory Module - CT8G4WFS824A
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SAMSUNG 16GB 288-Pin DDR4 SDRAM ECC Registered DDR4 2133 (PC4 17000) Server Memory Model M393A2G40DB0-CPB
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Kingston Premier Series 16GB 288-Pin DDR4 SDRAM ECC Unbuffered DDR4 3200 (PC4 25600) Server Memory Model KSM32ED8/16HD
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Kingston 16GB 288-Pin DDR4 SDRAM ECC Unbuffered DDR4 3200 (PC4 25600) Server Memory Model KTD-PE432ES8/16G
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Kingston 16GB 288-Pin DDR4 SDRAM ECC Unbuffered DDR4 3200 (PC4 25600) Server Memory Model KTD-PE432ES8/16G
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Crucial 16GB 240-Pin DDR3 RDIMM - DDR3L 1600 (PC3L 12800) Server Memory - 1.35V - ECC - 2Rx4 - CT16G3ERSLD4160B
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Supermicro (HMAA8GR7AJR4N-XN) 64GB SDRAM ECC Registered DDR4 3200 (PC4-25600) Server Memory Model MEM-DR464L-HL02-ER32
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Crucial  CT16G4RFD4213 16GB  288-Pin DDR4 2133 Server Memory
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Crucial CT16G4RFD4213 16GB 288-Pin DDR4 2133 Server Memory
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  • Model #: CT16G4RFD4213
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A9781929 - Dell Compatible 32GB PC4-21300 DDR4-2666Mhz 2Rx4 1.2v Registered RDIMM
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Brute Networks
A9781929 - Dell Compatible 32GB PC4-21300 DDR4-2666Mhz 2Rx4 1.2v Registered RDIMM
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  • CAS Latency: 15
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  • Model #: A9781929
  • Item #: 9SIADU06E89333
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HMA82GR7DJR8N-XN Hynix 16GB(1X16GB) DDR4-25600 2Rx8 EEC PC4-3200AA Server Memory
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SK hynix inc.
HMA82GR7DJR8N-XN Hynix 16GB(1X16GB) DDR4-25600 2Rx8 EEC PC4-3200AA Server Memory
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  • Model #: HMA82GR7DJR8N-XN X1
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Kingston KSM26ED8/16ME 16GB DDR4 2666 2RX8 Memory Module
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Kingston KSM26ED8/16ME 16GB DDR4 2666 2RX8 Memory Module
  • CAS Latency: 19
  • Timing: 19-19-19
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  • Model #: KSM26ED8/16ME
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HPE 64GB Quad Rank 4Rx4 DDR4-2666 (PC4 21300) CL19 ECC Load Reduced Server Memory
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HP
HPE 64GB Quad Rank 4Rx4 DDR4-2666 (PC4 21300) CL19 ECC Load Reduced Server Memory
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  • CAS Latency: 19
  • Timing: 19-19-19
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  • Model #: 815101-B21
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Kingston Premier Series 32GB 288-Pin DDR4 SDRAM ECC Registered DDR4 3200 (PC4 25600) Server Memory Model KSM32RD4/32HDR
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Kingston Technology Corp.
Kingston Premier Series 32GB 288-Pin DDR4 SDRAM ECC Registered DDR4 3200 (PC4 25600) Server Memory Model KSM32RD4/32HDR
  • CAS Latency: 22
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  • Model #: KSM32RD4/32HDR
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Choosing the right server memory can boost the performance and reliability of your data center by checking for data errors and reducing electrical loads. There are different types of server RAM to prevent crashes, correct inaccuracies in your data or allow for faster operation.

ECC Memory Uses Algorithms to Constantly Check Data for Errors

ECC server memory can prevent system failure and data corruption, which is particularly important in data centers and business environments, such as healthcare and finance. ECC memory adds a ""parity bit"" to each binary code to detect errors. When writing data, this type of system-specific memory creates and stores an ECC code. When it reads data, ECC memory creates a new ECC code and compares it to the one it had previously stored. If there are errors, the memory decrypts the corrupted data and corrects it immediately. ECC computer memory uses algorithms to continually check for single-bit errors as the server processes data. This type of server memory can be slower than others, but it reduces system crashes. It also tends to be more expensive. The other components of the server, such as the processor and motherboard, must support ECC memory.

Registered Memory Puts Less Strain on CPU Memory Controller

There are two types of ECC server memory: unbuffered and registered. When using unbuffered memory, the CPU communicates directly with the data banks for faster performance. Registered memory has registers on each memory bank module. The CPU needs to communicate with the registers first, then the registers communicate with the DRAM. This process means that every instruction from the server requires at least one extra CPU cycle, resulting in slower performance. However, registered server memory puts less strain on the CPU's memory controller, and increases reliability, a useful choice in data centers and business settings. Registered memory works with the DDR, DDR2 and DDR3 modules of many server models. 

Load-reduced Dual Inline Memory Modules Reduce Electrical Loading on the Memory Bus

A load-reduced dual inline memory module (LRDIMM) is a type of server memory that reduces electrical loading on the memory bus. LRDIMMs have a memory buffer chip for each module that goes into the parallel memory bus. This way, they do not connect directly to the bus like other types of memory. When a server only has LRDIMMs as dynamic RAM, the memory controllers shift from parallel to serial mode, so the memory buffer handles all the read and write operations. Thanks to the reduced electrical load, LRDIMMs typically work faster than registered memory. 

Dynamic RAM Is Common as Main Memory

When considering desktop memory, there are two types of server RAM: static and dynamic. Static RAM (SRAM) has a more complex construction, with latches and transistors. Each block of memory requires six transistors. SRAM consumes less power than dynamic RAM (DRAM) and it is faster, but it is only available in smaller storage sizes. Since SRAM has a short access time, it is most common as cache memory. DRAM has a larger access time, so it is more common as the main memory. It is generally more expensive than SRAM. These factors also apply to laptop memory.