• In Stock
  • Sold by Newegg
  • Make an Offer
  • New
Brands
Show More
Price
Show More
Speed
Type
Show More
Capacity
Show More
CAS Latency
Show More
Voltage
Show More
ECC
Buffered/Registered
Sold by
All Top Brands
Availability
Condition
Total Capacity
Current Promotion
Discount
Useful Links
Customer Ratings
  • NVIDIA AI SUPERCOMPUTE
  • Featured Brands

    See Deals from SupermicroSee Deals from CrucialSee Deals from SAMSUNGSee Deals from G.SKILLSee Deals from Corsair
Sort By:
View:
NEMIX RAM 256GB (2 x 128GB) DDR4 3200MHz PC4-25600 4Rx4 1.2V 288-PIN ECC RDIMM Registered Server Memory Kit
Quick View
NEMIX RAM 256GB (2 x 128GB) DDR4 3200MHz PC4-25600 4Rx4 1.2V 288-PIN ECC RDIMM Registered Server Memory Kit
  • Brand: NEMIX RAM
  • Capacity: 256GB (2 x 128GB)
  • Speed: DDR4 3200 (PC4 25600)
  • ECC: Yes
  • Model #: MR25600-744K2-SM-SYS-620C-TN12R
  •  
  • $2,373.89 
  • Free Shipping
NEMIX RAM 256GB (8X32GB) DDR4 2666MHZ PC4-21300 2Rx4 1.2V 288-PIN ECC RDIMM Registered Server Memory KIT Compatible with Dell PowerEdge T440 Tower
Quick View
NEMIX RAM 256GB (8X32GB) DDR4 2666MHZ PC4-21300 2Rx4 1.2V 288-PIN ECC RDIMM Registered Server Memory KIT Compatible with Dell PowerEdge T440 Tower
  • Chipset: Major OEM Samsung, Micron, Hynix
  • CAS Latency: CL19
  • Voltage: 1.35V
  • Part Number: MR21300-324K8
  • Model #: MR21300-324K8-DL-PET440
  •  
  • $1,982.99 
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
Quick View
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 
SAMSUNG 16GB ECC Registered DDR3 1600 (PC3 12800) Server Memory Model M393B2G70DB0-YK0
Quick View
SAMSUNG 16GB ECC Registered DDR3 1600 (PC3 12800) Server Memory Model M393B2G70DB0-YK0
  • CAS Latency: CL11
  • Voltage: 1.5V / 1.35V
  • Type: 240-Pin DDR3 SDRAM
  • Rank: 2Rx4
  • Model #: M393B2G70DB0-YK0
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
Quick View
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
SAMSUNG 16GB ECC Registered DDR4 2133 (PC4 17000) Server Memory Model M393A2G40DB0-CPB
Quick View
SAMSUNG 16GB ECC Registered DDR4 2133 (PC4 17000) Server Memory Model M393A2G40DB0-CPB
  • CAS Latency: CL15
  • Voltage: 1.20V
  • Type: 288-Pin DDR4 SDRAM
  • Rank: 2Rx4
  • Model #: M393A2G40DB0-CPB
A-Tech 256GB (8x32GB) 2Rx4 PC4-21300R DDR4 2666 MHz ECC RDIMM Registered DIMM 288-Pin Dual Rank x4 Server & Workstation RAM Memory Upgrade Kit
Quick View
A-Tech 256GB (8x32GB) 2Rx4 PC4-21300R DDR4 2666 MHz ECC RDIMM Registered DIMM 288-Pin Dual Rank x4 Server & Workstation RAM Memory Upgrade Kit
  • Chipset: Major Brand Chipset
  • CAS Latency: CL19
  • Voltage: 1.20V
  • Rank: 2Rx4
  • Model #: AT32G8D4D2666RD4N12V
  •  
  • $1,254.01 
64GB RAM Replacement for Micron MTC40F204651RC48BAS, MTC40F2046S1RC48BAX | DDR5 4800MHz PC5-38400 ECC RDIMM 2Rx4 (EC8) Server Memory
Quick View
64GB RAM Replacement for Micron MTC40F204651RC48BAS, MTC40F2046S1RC48BAX | DDR5 4800MHz PC5-38400 ECC RDIMM 2Rx4 (EC8) Server Memory
  • Brand: A-Tech
  • Series: Compatible Replacement for Micron MTC40F204651RC48BAS MTC40F2046S1RC48BAX
  • Capacity: 64GB
  • Speed: DDR5 4800 (PC5 38400)
  • Model #: NE-PNR-2485
  •  
  • $1,805.62 
A-Tech 32GB (2x16GB) 1Rx8 PC5-38400E DDR5 4800 MHz ECC UDIMM Unbuffered DIMM 288-Pin Single Rank x8 Server & Workstation RAM Memory Upgrade Kit
Quick View
A-Tech 32GB (2x16GB) 1Rx8 PC5-38400E DDR5 4800 MHz ECC UDIMM Unbuffered DIMM 288-Pin Single 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 #: AT16G2D5D4800ES8EC4N11V
  •  
  • $799.98 
SAMSUNG 32GB ECC Load Reduced DDR4 2133 (PC4 17000) Server Memory Model M386A4G40DM0-CPB
Quick View
SAMSUNG 32GB ECC Load Reduced DDR4 2133 (PC4 17000) Server Memory Model M386A4G40DM0-CPB
  • Chipset: Major Brand Chipset
  • CAS Latency: CL15
  • Timing: 15-15-15
  • Voltage: 1.20V
  • Model #: M386A4G40DM0-CPB
Hynix 32GB PC4-21300 DDR4-2666MHz ECC Reg Memory HMA84GR7AFR4N-VK * New Other *
Quick View
A-Tech 32GB (2x16GB) 2Rx4 PC4-19200R DDR4 2400 MHz ECC RDIMM Registered DIMM 288-Pin Dual Rank x4 Server & Workstation RAM Memory Upgrade Kit
Quick View
A-Tech 32GB (2x16GB) 2Rx4 PC4-19200R DDR4 2400 MHz ECC RDIMM Registered DIMM 288-Pin Dual Rank x4 Server & Workstation RAM Memory Upgrade Kit
  • Chipset: Major Brand Chipset
  • CAS Latency: CL17
  • Voltage: 1.20V
  • Multi-channel Kit: Dual Channel Kit
  • Model #: AT16G2D4D2400RD4N12V
  •  
  • $172.78 
NEMIX RAM 64GB (2 x 32GB) DDR5 4800MHz PC5-38400 2Rx8 1.1V 288-PIN ECC UDIMM Unbuffered Memory Kit
Quick View
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 256GB (4x64GB) 2Rx4 PC4-25600R DDR4 3200 MHz ECC RDIMM Registered DIMM 288-Pin Dual Rank x4 Server & Workstation RAM Memory Upgrade Kit
Quick View
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
  • $2,849.65
  •  
  • $2,792.66 
Supermicro Certified MEM-DR416L-HL01-EU26 Hynix HMA82GU7CJR8N-VK 16GB DDR4-2666 ECC UDIMM
Quick View
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
V-COLOR 1TB (256GBx4) DDR5 6400MHz PC5-51200 8Rx4 CL60 1.1V ECC Registered RDIMM Server Memory with Hynix IC (TR5256G64O460Q)
Quick View
V-color
V-COLOR 1TB (256GBx4) DDR5 6400MHz PC5-51200 8Rx4 CL60 1.1V ECC Registered RDIMM Server Memory with Hynix IC (TR5256G64O460Q)
  • Brand: V-Color
  • Series: ECC RDIMM
  • Capacity: 1TB (4 x 256GB)
  • Speed: DDR5 6400 (PC5 51200)
  • Model #: TR5256G64O460Q
  •  
  • $28,799.99 
32GB RAM Replacement for Samsung M393A4K40BB2-CTD, M393A4K40CB2-CTD, M393A4K40DB2-CTD | DDR4 2666MHz PC4-21300 ECC RDIMM 2Rx4 Server Memory
Quick View
  •  
  • $162.55 
NEMIX RAM 32GB (2 x 16GB) DDR5 5600MHz PC5-44800 1Rx8 1.1V 288-PIN ECC UDIMM Unbuffered Memory Kit
Quick View
NEMIX RAM 32GB (2 x 16GB) DDR5 5600MHz PC5-44800 1Rx8 1.1V 288-PIN ECC UDIMM Unbuffered Memory Kit
  • Brand: NEMIX RAM
  • Capacity: 32GB (2 x 16GB)
  • Speed: DDR5 5600 (PC5 44800)
  • ECC: Yes
  • Model #: ME44800-618K2-SM-AS-3015MR-H8TNR-01-G2
  •  
  • $828.99 
A-Tech 16GB 2Rx8 PC4-19200 DDR4 2400 ECC UDIMM Unbuffered DIMM 288-Pin Dual Rank x8 Server RAM Memory Module
Quick View
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 
NEMIX RAM 32GB (2X16GB) DDR4 3200MHZ PC4-25600 2Rx8 1.2V 288-PIN ECC Unbuffered UDIMM KIT
Quick View
NEMIX RAM 32GB (2X16GB) DDR4 3200MHZ PC4-25600 2Rx8 1.2V 288-PIN ECC Unbuffered UDIMM KIT
  • Chipset: Major OEM Samsung, Micron, Hynix
  • CAS Latency: CL22
  • Voltage: 1.20V
  • Part Number: ME25600-628K2
  • Model #: ME25600-628K02-G
  •  
  • $339.49 
  • 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
Quick View
  •  
  • $1,799.99 
A-Tech 64GB (4x16GB) 1Rx8 PC5-38400R DDR5 4800 MHz EC8 RDIMM ECC Registered DIMM 288-Pin Single Rank x8 Server & Workstation RAM Memory Upgrade Kit
Quick View
A-Tech 64GB (4x16GB) 1Rx8 PC5-38400R DDR5 4800 MHz EC8 RDIMM ECC Registered DIMM 288-Pin Single 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 #: AT16G4D5D4800RS8EC8N11V
  •  
  • $1,829.48 
32GB RAM Replacement for Hynix HMCG88AGBRA, HMCG88AGBRA188N, HMCG88AGBRA190N, HMCG88AGBRA191N, HMCG88AGBRA192N | DDR5 5600MHz PC5-44800 ECC RDIMM 2Rx8 (EC8) Server Memory
Quick View
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
  •  
  • $893.47 
A-Tech 8GB 2Rx4 PC3-12800R DDR3 1600 MHz ECC RDIMM 1.5V Registered DIMM 240-Pin Dual Rank x4 Server & Workstation RAM Memory Upgrade Module
Quick View
A-Tech 8GB 2Rx4 PC3-12800R DDR3 1600 MHz ECC RDIMM 1.5V Registered DIMM 240-Pin Dual Rank x4 Server & Workstation RAM Memory Upgrade Module
  • Chipset: Major Brand Chipset
  • CAS Latency: CL11
  • Voltage: 1.50V
  • Rank: 2Rx4
  • Model #: AT8G1D3D1600RD4N15V
  •  
  • $19.51 
  • Free Shipping
64GB RAM Replacement for Samsung M321R8GA0BB0-CQK | DDR5 4800MHz PC5-38400 ECC RDIMM 2Rx4 Server Memory
Quick View
64GB RAM Replacement for Samsung M321R8GA0BB0-CQK | DDR5 4800MHz PC5-38400 ECC RDIMM 2Rx4 Server Memory
  • Chipset: Samsung Chipset
  • CAS Latency: CL40
  • Voltage: 1.10V
  • Rank: 2Rx4 (EC8)
  • Model #: NE-PNR-2274
  •  
  • $1,805.62 
Total Micro 16GB ECC Registered DDR3 1600 (PC3 12800) Server Memory Model A5940905-TM
Quick View
Total Micro 16GB ECC Registered DDR3 1600 (PC3 12800) Server Memory Model A5940905-TM

OUT OF STOCK

  • CAS Latency: CL11
  • Voltage: 1.50V
  • Type: 240-Pin DDR3 SDRAM
  • Model #: A5940905-TM
  • $69.99
  •  
  • $48.99 
  • Save: 30%
  • Free Shipping
32GB RAM Replacement for Samsung M321R4GA0BB0-CQK | DDR5 4800MHz PC5-38400 ECC RDIMM 1Rx4 Server Memory
Quick View
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 
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
Quick View
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 
KINGSTON KSM26ED8/16ME Kingston KSM26ED8/16ME DDR4-2666 16GB/ 2Gx72 ECC CL19 Server Memory
Quick View
  •  
  • $229.00 
  • Free Shipping
Hynix DDR4-2133 32GB/4Gx72 ECC/REG CL15 Chip Server Memory HMA84GR7MFR4N-TF
Quick View
SK hynix
Hynix DDR4-2133 32GB/4Gx72 ECC/REG CL15 Chip Server Memory HMA84GR7MFR4N-TF
  • CAS Latency: CL15
  • Voltage: 1.20V
  • Type: 288-Pin DDR4 SDRAM
  • Rank: 2Rx4
  • Model #: HMA84GR7MFR4N-
16GB RAM Replacement for Micron MTC10F1084S1RC48BA1 | DDR5 4800MHz PC5-38400 ECC RDIMM 1Rx8 Server Memory
Quick View
16GB RAM Replacement for Micron MTC10F1084S1RC48BA1 | DDR5 4800MHz PC5-38400 ECC RDIMM 1Rx8 Server Memory
  • Chipset: Micron Chipset
  • CAS Latency: CL40
  • Voltage: 1.10V
  • Rank: 1Rx8 (EC8)
  • Model #: NE-PNR-2142
  •  
  • $457.37 
NEMIX RAM 64GB (4X16GB) DDR4 3200MHZ PC4-25600 2Rx8 1.2V 288-PIN ECC RDIMM Registered Server Memory KIT
Quick View
NEMIX RAM 64GB (4X16GB) DDR4 3200MHZ PC4-25600 2Rx8 1.2V 288-PIN ECC RDIMM Registered Server Memory KIT
  • Chipset: Major OEM Samsung, Micron, Hynix
  • CAS Latency: CL22
  • Voltage: 1.20V
  • Part Number: MR25600-628K4
  • Model #: MR25600-628K4-G
  •  
  • $634.49 
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
Quick View
  •  
  • $20.41 
  • Free Shipping

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