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A-Tech 32GB (2x16GB) 2Rx4 PC4-17000R DDR4 2133 MHz ECC RDIMM Registered DIMM 288-Pin Dual Rank x4 Server & Workstation RAM Memory Upgrade Kit
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A-Tech 32GB (2x16GB) 2Rx4 PC4-17000R DDR4 2133 MHz ECC RDIMM Registered DIMM 288-Pin Dual Rank x4 Server & Workstation RAM Memory Upgrade Kit
  • Chipset: Major Brand Chipset
  • CAS Latency: CL15
  • Voltage: 1.20V
  • Multi-channel Kit: Dual Channel Kit
  • Model #: AT16G2D4D2133RD4N12V
  • $149.45
  •  
  • $144.97 
Samsung M391B1G73QH0-YK0 8GB DDR3-1600 1.35V 2Rx8 ECC Un-Buffer LP PB-Free Memory
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SAMSUNG
Samsung M391B1G73QH0-YK0 8GB DDR3-1600 1.35V 2Rx8 ECC Un-Buffer LP PB-Free Memory
  • Voltage: 1.35V
  • Type: 240-Pin DDR3 SDRAM
  • Model #: M391B1G73QH0
Supermicro Certified MEM-DR416L-HL01-EU26 Hynix HMA82GU7CJR8N-VK 16GB DDR4-2666 ECC UDIMM
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SK hynix
Supermicro Certified MEM-DR416L-HL01-EU26 Hynix HMA82GU7CJR8N-VK 16GB DDR4-2666 ECC UDIMM
  • CAS Latency: CL11
  • Voltage: 1.20V
  • Type: 288-Pin DDR4 SDRAM
  • Rank: 2Rx8
  • Model #: HY4162666ECCD8-1-M6
Samsung DDR4 2400MHz CL17 16GB RegECC 2Rx4 M393A2G40EB1-CRC 1.2V single pack
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in 30 days
SAMSUNG
Samsung DDR4 2400MHz CL17 16GB RegECC 2Rx4 M393A2G40EB1-CRC 1.2V single pack
  • CAS Latency: CL17
  • Voltage: 1.20V
  • Type: 288-Pin DDR4 SDRAM
  • Rank: 2Rx4
  • Model #: M393A2G40EB1-CRC
NEMIX RAM 64GB (2 x 32GB) DDR5 4800MHz PC5-38400 2Rx8 1.1V 288-PIN ECC UDIMM Unbuffered Memory Kit
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NEMIX RAM 64GB (2 x 32GB) DDR5 4800MHz PC5-38400 2Rx8 1.1V 288-PIN ECC UDIMM Unbuffered Memory Kit
  • Brand: NEMIX RAM
  • Capacity: 64GB (2 x 32GB)
  • Speed: DDR5 4800 (PC5 38400)
  • ECC: Yes
  • Model #: ME38400-328K2-SM-SYS-111AD-HN2-01-G2
  •  
  • $1,578.99 
A-Tech 64GB (2x32GB) 2Rx8 PC5-38400E DDR5 4800 MHz ECC UDIMM Unbuffered DIMM 288-Pin Dual Rank x8 Server & Workstation RAM Memory Upgrade Kit
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A-Tech 64GB (2x32GB) 2Rx8 PC5-38400E DDR5 4800 MHz ECC UDIMM Unbuffered DIMM 288-Pin Dual Rank x8 Server & Workstation RAM Memory Upgrade Kit
  • Chipset: Major Brand Chipset
  • CAS Latency: CL40
  • Voltage: 1.10V
  • Multi-channel Kit: Dual Channel Kit
  • Model #: AT32G2D5D4800ED8EC4N11V
  •  
  • $1,559.98 
  • Free Shipping
A-Tech 256GB (4x64GB) 2Rx4 PC4-25600R DDR4 3200 MHz ECC RDIMM Registered DIMM 288-Pin Dual Rank x4 Server & Workstation RAM Memory Upgrade Kit
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A-Tech 256GB (4x64GB) 2Rx4 PC4-25600R DDR4 3200 MHz ECC RDIMM Registered DIMM 288-Pin Dual Rank x4 Server & Workstation RAM Memory Upgrade Kit
  • Chipset: Major Brand Chipset
  • CAS Latency: CL22
  • Voltage: 1.20V
  • Multi-channel Kit: Quad Channel Kit
  • Model #: AT64G4D4D3200RD4N12V
  •  
  • $2,575.07 
32GB RAM Replacement for Samsung M393A4K40BB2-CTD, M393A4K40CB2-CTD, M393A4K40DB2-CTD | DDR4 2666MHz PC4-21300 ECC RDIMM 2Rx4 Server Memory
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32GB RAM Replacement for Samsung M393A4K40BB2-CTD, M393A4K40CB2-CTD, M393A4K40DB2-CTD | DDR4 2666MHz PC4-21300 ECC RDIMM 2Rx4 Server Memory
  • Chipset: Major Brand Chipset
  • CAS Latency: CL19
  • Voltage: 1.20V
  • Rank: 2Rx4
  • Model #: 5053772477551
  • $162.55
  •  
  • $151.34 
  • Save: 6%
A-Tech 512GB (8x64GB) 2Rx4 PC5-51200R DDR5 6400 MHz EC8 RDIMM ECC Registered DIMM 288-Pin Dual Rank x4 Server & Workstation RAM Memory Upgrade Kit
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A-Tech 512GB (8x64GB) 2Rx4 PC5-51200R DDR5 6400 MHz EC8 RDIMM ECC Registered DIMM 288-Pin Dual Rank x4 Server & Workstation RAM Memory Upgrade Kit
  • Chipset: Major Brand Chipset
  • Voltage: 1.10V
  • Part Number: AT64G8D5D6400RD4EC8N11V
  • Type: 288-Pin DDR5 SDRAM
  • Model #: AT64G8D5D6400RD4EC8N11V
  •  
  • $17,555.92 
  • Free Shipping
TEAMGROUP CTCMD596G6400HC32AQC01 T-Create Master 96GB kits(24GBx4) DDR5 6400 (PC5-51200) Overclock ECC RDIMM CL32 1.4V One-rank Server Memory HYNIX IC
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Team Group
TEAMGROUP CTCMD596G6400HC32AQC01 T-Create Master 96GB kits(24GBx4) DDR5 6400 (PC5-51200) Overclock ECC RDIMM CL32 1.4V One-rank Server Memory HYNIX IC
  • Brand: Team
  • Series: T-Create Master
  • Capacity: 96GB (4 x 24GB)
  • Speed: DDR5 6400 (PC5 51200)
  • Model #: CTCMD596G6400HC32AQC01
A-Tech 128GB (4x32GB) 2Rx8 PC5-38400R DDR5 4800 MHz EC8 RDIMM ECC Registered DIMM 288-Pin Dual Rank x8 Server & Workstation RAM Memory Upgrade Kit
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A-Tech 128GB (4x32GB) 2Rx8 PC5-38400R DDR5 4800 MHz EC8 RDIMM ECC Registered DIMM 288-Pin Dual Rank x8 Server & Workstation RAM Memory Upgrade Kit
  • Chipset: Major Brand Chipset
  • CAS Latency: CL40
  • Voltage: 1.10V
  • Multi-channel Kit: Quad Channel Kit
  • Model #: AT32G4D5D4800RD8EC8N11V
  •  
  • $3,721.55 
A-Tech 16GB 2Rx8 PC4-19200 DDR4 2400 ECC UDIMM Unbuffered DIMM 288-Pin Dual Rank x8 Server RAM Memory Module
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A-Tech 16GB 2Rx8 PC4-19200 DDR4 2400 ECC UDIMM Unbuffered DIMM 288-Pin Dual Rank x8 Server RAM Memory Module
  • CAS Latency: CL17
  • Type: 288-Pin DDR4 SDRAM
  • Rank: 2Rx8
  • Model #: AT16G1D4D2400UD8N12V
  •  
  • $139.99 
A-Tech 64GB (2x32GB) 2Rx4 PC4-17000R DDR4 2133 MHz ECC RDIMM Registered DIMM 288-Pin Dual Rank x4 Server & Workstation RAM Memory Upgrade Kit
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A-Tech 64GB (2x32GB) 2Rx4 PC4-17000R DDR4 2133 MHz ECC RDIMM Registered DIMM 288-Pin Dual Rank x4 Server & Workstation RAM Memory Upgrade Kit
  • Chipset: Major Brand Chipset
  • CAS Latency: CL15
  • Voltage: 1.20V
  • Multi-channel Kit: Dual Channel Kit
  • Model #: AT32G2D4D2133RD4N12V
  • $285.89
  •  
  • $260.84 
  • Save: 8%
32GB RAM Replacement for Micron MTC20F2085S1RC48BA1 | DDR5 4800MHz PC5-38400 ECC RDIMM 2Rx8 Server Memory
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32GB RAM Replacement for Micron MTC20F2085S1RC48BA1 | DDR5 4800MHz PC5-38400 ECC RDIMM 2Rx8 Server Memory
  • Chipset: Micron Chipset
  • CAS Latency: CL40
  • Voltage: 1.10V
  • Rank: 2Rx8 (EC8)
  • Model #: NE-PNR-2146
  •  
  • $931.08 
A-Tech 4GB 2Rx8 PC3L-10600E DDR3 / DDR3L 1333 MHz ECC UDIMM 1.35V ECC Unbuffered DIMM 240-Pin Dual Rank x8 Server & Workstation RAM Memory Upgrade Module
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  •  
  • $20.41 
  • Free Shipping
TEAMGROUP CTCMD5192G6400HC32AOC01 T-Create Master 192GB kits(24GBx8) DDR5 6400 (PC5-51200) Overclock ECC RDIMM CL32 1.4V One-rank Server Memory HYNIX IC
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in 30 days
Team Group
TEAMGROUP CTCMD5192G6400HC32AOC01 T-Create Master 192GB kits(24GBx8) DDR5 6400 (PC5-51200) Overclock ECC RDIMM CL32 1.4V One-rank Server Memory HYNIX IC

OUT OF STOCK

  • Brand: Team
  • Series: T-Create Master
  • Capacity: 192GB (8 x 24GB)
  • Speed: DDR5 6400 (PC5 51200)
  • Model #: CTCMD5192G6400HC32AOC01
  •  
  • $2,999.00 
  • Free Shipping
32GB RAM Replacement for Hynix HMCG88AGBRA, HMCG88AGBRA188N, HMCG88AGBRA190N, HMCG88AGBRA191N, HMCG88AGBRA192N | DDR5 5600MHz PC5-44800 ECC RDIMM 2Rx8 (EC8) Server Memory
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32GB RAM Replacement for Hynix HMCG88AGBRA, HMCG88AGBRA188N, HMCG88AGBRA190N, HMCG88AGBRA191N, HMCG88AGBRA192N | DDR5 5600MHz PC5-44800 ECC RDIMM 2Rx8 (EC8) Server Memory
  • Brand: A-Tech
  • Series: Compatible Replacement for Hynix HMCG88AGBRA HMCG88AGBRA188N HMCG88AGBRA190N HMCG88AGBRA191N HMCG88AGBRA192N
  • Capacity: 32GB
  • Speed: DDR5 5600 (PC5 44800)
  • Model #: NE-PNR-2450
  •  
  • $982.82 
A-Tech 64GB (8x8GB) 2Rx4 PC3-12800R DDR3 1600 MHz ECC RDIMM 1.5V Registered DIMM 240-Pin Dual Rank x4 Server & Workstation RAM Memory Upgrade Kit
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A-Tech 64GB (8x8GB) 2Rx4 PC3-12800R DDR3 1600 MHz ECC RDIMM 1.5V Registered DIMM 240-Pin Dual Rank x4 Server & Workstation RAM Memory Upgrade Kit
  • Chipset: Major Brand Chipset
  • CAS Latency: CL11
  • Voltage: 1.50V
  • Rank: 2Rx4
  • Model #: AT8G8D3D1600RD4N15V
  •  
  • $156.10 
  • Free Shipping
V-COLOR DDR5 256GB (64GBx4) 6400MT/s CL60 ECC R-DIMM 1.1V Memory Ram for AMD TRX50/WRX90 Workstations with Hynix IC (TRA564G64D460Q)
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V-color
V-COLOR DDR5 256GB (64GBx4) 6400MT/s CL60 ECC R-DIMM 1.1V Memory Ram for AMD TRX50/WRX90 Workstations with Hynix IC (TRA564G64D460Q)
  • Brand: V-Color
  • Series: ECC RDIMM
  • Capacity: 256GB (4 x 64GB)
  • Speed: DDR5 6400 (PC5 51200)
  • Model #: TRA564G64D460Q
  •  
  • $8,719.99 
  • Free Shipping
KINGSTON KSM26ED8/16ME Kingston KSM26ED8/16ME DDR4-2666 16GB/ 2Gx72 ECC CL19 Server Memory
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  • $229.00 
  • Free Shipping
OWC 64GB Replacement for Samsung M321R8GA0BB0-CQK - DDR5 4800 PC5-38400 CL40 2Rx4 288-pin 1.1V ECC Registered RDIMM Memory RAM Module Upgrade
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  •  
  • $1,799.99 
Crucial 32G 288-Pin DDR4 SDRAM ECC Buffered / Registered DDR4 2400 (PC4 19200) Server Memory Model CT32G4RFD424A
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Crucial 32G 288-Pin DDR4 SDRAM ECC Buffered / Registered DDR4 2400 (PC4 19200) Server Memory Model CT32G4RFD424A
  • Chipset: Micron Chipset
  • CAS Latency: CL17
  • Voltage: 1.20V
  • Type: 288-Pin DDR4 SDRAM
  • Model #: CT32G4RFD424A
32GB RAM Replacement for Samsung M321R4GA0BB0-CQK | DDR5 4800MHz PC5-38400 ECC RDIMM 1Rx4 Server Memory
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32GB RAM Replacement for Samsung M321R4GA0BB0-CQK | DDR5 4800MHz PC5-38400 ECC RDIMM 1Rx4 Server Memory
  • Chipset: Samsung Chipset
  • CAS Latency: CL40
  • Voltage: 1.10V
  • Rank: 1Rx4 (EC8)
  • Model #: NE-PNR-2273
  •  
  • $827.63 
NEMIX RAM 32GB (1X32GB) DDR3 1600MHZ PC3-12800 4Rx4 1.35V 240-PIN ECC LRDIMM Compatible with Hynix HMT84GL7BMR4A-PB Load Reduced Server Memory
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NEMIX RAM 32GB (1X32GB) DDR3 1600MHZ PC3-12800 4Rx4 1.35V 240-PIN ECC LRDIMM Compatible with Hynix HMT84GL7BMR4A-PB Load Reduced Server Memory
  • Chipset: Major OEM Samsung, Micron, Hynix
  • CAS Latency: CL9
  • Voltage: 1.35V
  • Part Number: ML12800-344LK1
  • Model #: ML12800-344LK01-2394
  •  
  • $49.99 
  • Free Shipping
Hynix HMA81GU6AFR8N-UH 8GB DDR4-2400 Non-ECC UDIMM Memory
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Hynix HMA81GU6AFR8N-UH 8GB DDR4-2400 Non-ECC UDIMM Memory
  • Type: 288-Pin DDR4 SDRAM
  • Model #: HMA81GU6AFR8N-UH
32GB RAM Replacement for Micron MTA18ASF4G72PDZ-3G2 | DDR4 3200MHz PC4-25600 ECC RDIMM 2Rx8 Server Memory
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in 30 days
32GB RAM Replacement for Micron MTA18ASF4G72PDZ-3G2 | DDR4 3200MHz PC4-25600 ECC RDIMM 2Rx8 Server Memory
  • Chipset: Major Brand Chipset
  • CAS Latency: CL22
  • Voltage: 1.20V
  • Rank: 2Rx8
  • Model #: 5053772479203
  •  
  • $340.58 
NEMIX RAM 16GB (1X16GB) DDR4 3200MHZ PC4-25600 2Rx8 1.2V 288-PIN ECC RDIMM Registered Server Memory
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NEMIX RAM 16GB (1X16GB) DDR4 3200MHZ PC4-25600 2Rx8 1.2V 288-PIN ECC RDIMM Registered Server Memory
  • Chipset: Major OEM Samsung, Micron, Hynix
  • CAS Latency: CL22
  • Voltage: 1.20V
  • Part Number: MR25600-628K1
  • Model #: MR25600-628K1-G
  •  
  • $158.88 
OWC 64GB Replacement for Micron MTC36F2046S1PC48B MTC40F2046S1RC48B MTC40F2046S1RC48BR - DDR5 4800 PC5-38400 CL40 2Rx4 288-pin 1.1V ECC Registered RDIMM Memory RAM Module Upgrade
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  •  
  • $1,799.99 
Kingston KSM32ED8/32HD RAM Module - 32 GB - DDR4-3200/PC4-25600 DDR4 SDRAM - 3200 MHz Dual-rank Memory - CL22 - 1.20 V - ECC - 288-pin - DIMM
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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.

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