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Kingston ValueRAM 2GB ECC Fully Buffered DDR2 667 (PC2 5300) Server Memory Model KVR667D2D8F5/2G
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Kingston ValueRAM 2GB ECC Fully Buffered DDR2 667 (PC2 5300) Server Memory Model KVR667D2D8F5/2G
  • CAS Latency: CL5
  • Voltage: 1.80V
  • Heat Spreader: Yes
  • Type: 240-Pin DDR2 SDRAM
  • Model #: KVR667D2D8F5/2G
  • $18.83
  •  
  • $17.50 
  • Save: 7%
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NEMIX RAM 8GB (1X8GB) DDR4 2666MHZ PC4-21300 1Rx8 1.2V 288-PIN ECC Unbuffered UDIMM Memory
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NEMIX RAM 8GB (1X8GB) DDR4 2666MHZ PC4-21300 1Rx8 1.2V 288-PIN ECC Unbuffered UDIMM Memory
  • Chipset: Major OEM Samsung, Micron, Hynix
  • CAS Latency: CL19
  • Voltage: 1.20V
  • Part Number: ME21300-818K1
  • Model #: ME21300-818K1-G
  •  
  • $69.99 
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
  • Chipset: Major Brand Chipset
  • CAS Latency: CL19
  • Timing: 19-19-19
  • Voltage: 1.20V
  • Model #: 815101-B21
Samsung - M393A2K40CB2-CTD - Samsung 16GB DDR4 SDRAM Memory Module - 16 GB (1 x 16 GB) - DDR4-2666/PC4-21300 DDR4 SDRAM
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Samsung - M393A2K40CB2-CTD - Samsung 16GB DDR4 SDRAM Memory Module - 16 GB (1 x 16 GB) - DDR4-2666/PC4-21300 DDR4 SDRAM
  • CAS Latency: CL19
  • Voltage: 1.20V
  • Type: 288-Pin DDR4 SDRAM
  • Rank: 1Rx4
  • Model #: M393A2K40CB2-CTD
Kingston - KSM26RD8/16MEI - Kingston 16GB Module - DDR4 2666MHz Server Premier - 16 GB - DDR4-2666/PC4-2666 DDR4 SDRAM -
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Kingston - KSM26RD8/16MEI - Kingston 16GB Module - DDR4 2666MHz Server Premier - 16 GB - DDR4-2666/PC4-2666 DDR4 SDRAM -
  • CAS Latency: CL19
  • Timing: 19-19-19
  • Voltage: 1.20V
  • Type: 288-Pin DDR4 SDRAM
  • Model #: KSM26RD8/16MEI
  •  
  • $149.00 
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512MB PC2700 333Mhz DDR ECC RAM 184-PIN - Micron
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  •  
  • $22.75 
  • Free Shipping
Micron MTA16ATF2G64HZ-2G6H1
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Micron MTA16ATF2G64HZ-2G6H1
  • Brand: Micron
  • Capacity: 16GB
  • Speed: 2666
  • ECC: NON
  • Model #: MTA16ATF2G64HZ-2G6H1
Hynix HMA81GS6AFR8N-UH
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SK hynix
Hynix HMA81GS6AFR8N-UH
  • Brand: Hynix
  • Capacity: 8GB
  • Speed: DDR4 2400 (PC4 19200)
  • ECC: NON
  • Model #: HMA81GS6AFR8N-UH
NEMIX RAM 64GB (1X64GB) DDR4 2933MHZ PC4-23400 2Rx4 1.2V 288-PIN ECC RDIMM Registered Server Memory Compatible with Samsung M393A8G40MB2-CVF
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NEMIX RAM 64GB (1X64GB) DDR4 2933MHZ PC4-23400 2Rx4 1.2V 288-PIN ECC RDIMM Registered Server Memory Compatible with Samsung M393A8G40MB2-CVF
  • Chipset: Major OEM Samsung, Micron, Hynix
  • CAS Latency: CL21
  • Voltage: 1.20V
  • Part Number: MR23400-924K1
  • Model #: 759170817733
  •  
  • $536.97 
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NEMIX RAM 8GB (1X8GB) DDR4 2666MHZ PC4-21300 1Rx4 1.2V 288-PIN ECC RDIMM Registered Server Memory
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NEMIX RAM 8GB (1X8GB) DDR4 2666MHZ PC4-21300 1Rx4 1.2V 288-PIN ECC RDIMM Registered Server Memory
  • Chipset: Major OEM Samsung, Micron, Hynix
  • CAS Latency: CL19
  • Voltage: 1.20V
  • Part Number: MR21300-814K1
  • Model #: MR21300-814K01-93
  •  
  • $69.99 
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NEMIX RAM 8GB (1X8GB) DDR4 2400MHZ PC4-19200 1Rx4 1.2V 288-PIN ECC RDIMM Registered Server Memory
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NEMIX RAM 8GB (1X8GB) DDR4 2400MHZ PC4-19200 1Rx4 1.2V 288-PIN ECC RDIMM Registered Server Memory
  • Chipset: Major OEM Samsung, Micron, Hynix
  • CAS Latency: CL17
  • Voltage: 1.20V
  • Part Number: MR19200-814K1
  • Model #: MR19200-814K01-86
  •  
  • $66.88 
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Hynix HMA82GU6MFR8N-TF
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Hynix HMA82GU6MFR8N-TF
  • Type: 288-Pin DDR4 SDRAM
  • Rank: 2Rx8
  • Model #: HMA82GU6MFR8N-TF
NEMIX RAM 16GB (1X16GB) DDR4 2400MHZ PC4-19200 2Rx8 1.2V 288-PIN ECC UDIMM Unbuffered Memory
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NEMIX RAM 16GB (1X16GB) DDR4 2400MHZ PC4-19200 2Rx8 1.2V 288-PIN ECC UDIMM Unbuffered Memory
  • Chipset: Major OEM Samsung, Micron, Hynix
  • CAS Latency: CL17
  • Voltage: 1.20V
  • Part Number: ME19200-628K1
  • Model #: ME19200-628K01-80
  •  
  • $169.99 
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Hynix HMA41GU6MFR8N-TF
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SK hynix
Hynix HMA41GU6MFR8N-TF
  • Type: 288-Pin DDR4 SDRAM
  • Rank: 2Rx8
  • Model #: HMA41GU6MFR8N-TF
32GB RAM Replacement for HP 726722-B21, 752372-081, 752372-581, 774174-001, 790110-001, 839985-S21, J9P84AA | DDR4 2133MHz PC4-17000 ECC LRDIMM 4Rx4 Server Memory
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  •  
  • $125.45 
TP9W1 - Dell Compatible 16GB PC4-21300 DDR4-2666Mhz 2Rx8 1.2v Non-288-Pin DDR4 SDRAM
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TP9W1 - Dell Compatible 16GB PC4-21300 DDR4-2666Mhz 2Rx8 1.2v Non-288-Pin DDR4 SDRAM
  • Chipset: Major Brand Chipset
  • Voltage: 1.20V
  • Type: 288-Pin DDR4 SDRAM
  • Rank: 2Rx8
  • Model #: TP9W1
  •  
  • $159.45 
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NEMIX RAM 16GB (1X16GB) DDR4 3200MHZ PC4-25600 2Rx8 1.2V 288-PIN ECC RDIMM Compatible with QNAP RAM-16GDR4ECT0-RD-3200 Registered Server Memory
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NEMIX RAM 16GB (1X16GB) DDR4 3200MHZ PC4-25600 2Rx8 1.2V 288-PIN ECC RDIMM Compatible with QNAP RAM-16GDR4ECT0-RD-3200 Registered Server Memory
  • Chipset: Major OEM Samsung, Micron, Hynix
  • CAS Latency: CL22
  • Voltage: 1.20V
  • Part Number: MR25600-628K1
  • Model #: MR25600-628K1-QN-RAM-16GDR4ECT0-RD-3200
  •  
  • $158.88 
NEMIX RAM 32GB (1X32GB) DDR4 2666MHZ PC4-21300 2Rx4 1.2V 288-PIN ECC RDIMM Registered Server Memory Compatible with Supermicro H11SSL-i AMD EPYC Series Motherboard
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NEMIX RAM 32GB (1X32GB) DDR4 2666MHZ PC4-21300 2Rx4 1.2V 288-PIN ECC RDIMM Registered Server Memory Compatible with Supermicro H11SSL-i AMD EPYC Series Motherboard
  • Chipset: Major OEM Samsung, Micron, Hynix
  • CAS Latency: CL19
  • Voltage: 1.20V
  • Part Number: MR21300-324K1
  • Model #: 99-698-425
  •  
  • $249.99 
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SNPM04W6C/16G - Dell Compatible 16GB PC4-25600 DDR4-3200Mhz 2Rx8 ECC Registered RDIMM
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SNPM04W6C/16G - Dell Compatible 16GB PC4-25600 DDR4-3200Mhz 2Rx8 ECC Registered RDIMM
  • Chipset: Major Brand Chipset
  • Voltage: 1.20V
  • Rank: 2Rx8
  • Parts: 5 Years
  • Model #: SNPM04W6C/16G
  •  
  • $239.45 
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SNPH8PGNG/8G - Dell Compatible 8GB PC4-17000 DDR4-2133Mhz 2Rx8 1.2v ECC Registered RDIMM
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SNPH8PGNG/8G - Dell Compatible 8GB PC4-17000 DDR4-2133Mhz 2Rx8 1.2v ECC Registered RDIMM
  • Chipset: Major Brand Chipset
  • CAS Latency: CL15
  • Voltage: 1.20V
  • Type: 288-Pin DDR4 SDRAM
  • Model #: SNPH8PGNG/8G
  •  
  • $44.45 
  • Free Shipping
Samsung M391B1G73QH0-CK0
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SAMSUNG
Samsung M391B1G73QH0-CK0
  • Voltage: Regular Voltage
  • Type: 240-Pin DDR3 SDRAM
  • Rank: 2Rx8
  • Model #: M391B1G73QH0-CK0
  •  
  • $34.58 
  • Free Shipping
OWC 512GB (4x128GB) DDR4 3200MHz PC4-25600 CL22 4RX4 ECC Load Reduced LRDIMM 1.2V 288-pin Memory RAM Upgrade for Server
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OWC 512GB (4x128GB) DDR4 3200MHz PC4-25600 CL22 4RX4 ECC Load Reduced LRDIMM 1.2V 288-pin Memory RAM Upgrade for Server
  • CAS Latency: CL22
  • Voltage: 1.2V
  • Multi-channel Kit: Dual Channel Kit
  • Part Number: 3L2D44R4512S
  • Model #: OWC3L2D44R4512S
  •  
  • $3,784.76 
OWC 16GB Replacement for Dell 0284FC 284FC 319?1812 319?1943 370?21961 - DDR3 1600 PC3-12800 CL11 2Rx4 240-pin 1.5V ECC Registered RDIMM Memory RAM Module Upgrade
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OWC 16GB Replacement for Dell 0284FC 284FC 319?1812 319?1943 370?21961 - DDR3 1600 PC3-12800 CL11 2Rx4 240-pin 1.5V ECC Registered RDIMM Memory RAM Module Upgrade
  • CAS Latency: CL11
  • Voltage: 1.5V
  • Part Number: 1R6D32R416GB
  • Type: 240-Pin DDR3 ECC RDIMM
  • Model #: OWC1R6D32R416GB-B639-SF
  •  
  • $59.99 
G.SKILL G5 Neo Series 192GB (4 x 48GB) ECC Registered DDR5 6400 (PC5 51200) Server Memory Model F5-6400R3239G48GQ4-G5N
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in 30 days
G.SKILL
G.SKILL G5 Neo Series 192GB (4 x 48GB) ECC Registered DDR5 6400 (PC5 51200) Server Memory Model F5-6400R3239G48GQ4-G5N
  • Brand: G.SKILL
  • Series: G5 Neo Series
  • Capacity: 192GB (4 x 48GB)
  • Speed: DDR5 6400 (PC5 51200)
  • Model #: F5-6400R3239G48GQ4-G5N
Kingston  KSM56R46BS8-16HA RAM Module - For Server, Motherboard - 16 GB - DDR5-5600/PC5-44800 DDR5 SDRAM - 5600 MHz Single-rank Memory - CL46 - 1.10 V - ECC - Registered - 288-pin - DIMM
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  • COMING SOON
Kingston KF548R36RB-32 FURY Renegade Pro 32GB DDR5 SDRAM Memory Module - For Desktop PC, Workstation - 32 GB (1 x 32GB) - DDR5-4800/PC5-38400 DDR5 SDRAM - 4800 MHz - CL36 - 1.10 V - ECC - Registered
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  • COMING SOON
Kingston KSM56E46BD8KM-32HA Server Premier 32GB DDR5 SDRAM Memory Module - For Server - 32 GB - DDR5-5600/PC5-44800 DDR5 SDRAM - 5600 MHz - CL46 - 1.10 V - On-die ECC - Unbuffered - 288-pin - DIMM
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  • COMING SOON
Kingston  KSM56R46BD8-32HA 32GB DDR5 SDRAM Memory Module - For Server, Motherboard, Computer - 32 GB - DDR5-5600/PC5-44800 DDR5 SDRAM - 5600 MHz Dual-rank Memory - CL46 - 1.10 V - ECC
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  • COMING SOON
Kingston KF560R32RBE-32 FURY Renegade Pro 32GB DDR5 SDRAM Memory Module - For Motherboard - 32 GB (1 x 32GB) - DDR5-6000/PC5-48000 DDR5 SDRAM - 6000 MHz Single-rank Memory - CL32 - 1.35 V - ECC
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  • COMING SOON
G.SKILL G5 Series 128GB (4 x 32GB) ECC Registered DDR5 6400 (PC5 51200) Server Memory Model F5-6400R3239G32GQ4-G5
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G.SKILL
G.SKILL G5 Series 128GB (4 x 32GB) ECC Registered DDR5 6400 (PC5 51200) Server Memory Model F5-6400R3239G32GQ4-G5

OUT OF STOCK

  • Brand: G.SKILL
  • Series: G5 Series
  • Capacity: 128GB (4 x 32GB)
  • Speed: DDR5 6400 (PC5 51200)
  • Model #: F5-6400R3239G32GQ4-G5
Samsung - M386A8K40BM2-CTD - Samsung 64GB DDR4 SDRAM Memory Module - 64 GB (1 x 64 GB) - DDR4-2666/PC4-21300 DDR4 SDRAM
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Samsung - M386A8K40BM2-CTD - Samsung 64GB DDR4 SDRAM Memory Module - 64 GB (1 x 64 GB) - DDR4-2666/PC4-21300 DDR4 SDRAM
  • Chipset: Major Brand Chipset
  • CAS Latency: CL19
  • Voltage: 1.20V
  • Type: 288-Pin DDR4 SDRAM
  • Model #: M386A8K40BM2-CTD

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.

Bestselling Server Memory Reviews:

Matthew D.
7/29/2023 12:51:29 PM
Works with Ryzen Pro 4350G and Asrock B550 Mini-ITX

“ Highly recommended if you are building a home server on a Ryzen platform and need ECC ram that is compatible. ”

NEMIX RAM 32GB (2X16GB) DDR4 3200MHZ PC4-25600 2Rx8 1.2V 288-PIN ECC Unbuffered UDIMM KIT
Thomas
6/14/2022 1:17:58 PM
Works great in a consumer build

“ An advantage of this server memory is it works out of the box with the BIOS with no overclock profile required and runs at 1.2V. ”

Micron DDR4-3200 32GB/4Gx72 ECC CL22 Server Memory