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Supermicro (M393A8G40AB2-CWE) 64GB SDRAM ECC Registered DDR4 3200 (PC4-25600) Server Memory Model MEM-DR464L-SL01-ER32
Supermicro
Supermicro (M393A8G40AB2-CWE) 64GB SDRAM ECC Registered DDR4 3200 (PC4-25600) Server Memory Model MEM-DR464L-SL01-ER32
  • CAS Latency: 22
  • Voltage: 1.20V
  • Rank: 2Rx4
  • Model #: MEM-DR464L-SL01-ER32
  • Item #: 1X5-000A-00PV6
  • Return Policy: Standard Return Policy
  • DDR4 3200 (PC4 25600)
  • Dual Rank 2Rx4
  • 1.2V RDIMM
  • Samsung Org. part#M393A8G40AB2-CWE
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Kingston 32GB DDR4 2666MHz 288pin DIMM ECC Reg Memory Module KSM26ED8/32ME
Kingston Technology Corp.
Kingston 32GB DDR4 2666MHz 288pin DIMM ECC Reg Memory Module KSM26ED8/32ME
  • CAS Latency: 19
  • Timing: 19-19-19
  • Voltage: 1.20V
  • Rank: 2Rx8
  • Model #: KSM26ED832ME
  • Item #: 0RN-001J-00TV5
  • Return Policy: Standard Return Policy
Supermicro (MTA36ASF4G72PZ-2G9E2) 32GB SDRAM ECC Registered DDR4 2933 (PC4 23400) Server Memory Model MEM-DR432L-CL01-ER29
Supermicro
Supermicro (MTA36ASF4G72PZ-2G9E2) 32GB SDRAM ECC Registered DDR4 2933 (PC4 23400) Server Memory Model MEM-DR432L-CL01-ER29
  • CAS Latency: 21
  • Voltage: 1.20V
  • Rank: 2Rx4
  • Model #: MEM-DR432L-CL01-ER29
  • Item #: 1X5-003U-00211
  • Return Policy: Standard Return Policy
Samsung M393A8G40AB2-CWE 64GB DDR4-3200 PC4-25600 ECC Registered RDIMM Memory for Servers
Kingston Premier Series 8GB 288-Pin DDR4 SDRAM ECC Registered DDR4 2400 (PC4 19200) Server Memory Model KSM24RS8/8HDI
Kingston Technology Corp.
Kingston Premier Series 8GB 288-Pin DDR4 SDRAM ECC Registered DDR4 2400 (PC4 19200) Server Memory Model KSM24RS8/8HDI
  • CAS Latency: 17
  • Timing: 17-17-17
  • Voltage: 1.20V
  • Rank: 1Rx8
  • Model #: KSM24RS8/8HDI
  • Item #: N82E16820242508
  • Return Policy: Standard Return Policy
Kingston Server Premier 32GB DDR4 2933 ECC CL21 Server Memory Module - KSM29ED8/32ME
Kingston Technology Corp.
Kingston Server Premier 32GB DDR4 2933 ECC CL21 Server Memory Module - KSM29ED8/32ME
  • CAS Latency: 21
  • Timing: 21-21-21
  • Voltage: 1.20V
  • Rank: 2Rx8
  • Model #: KSM29ED8/32ME
  • Item #: 1B4-00M4-003X4
  • Return Policy: Standard Return Policy
Supermicro (HMA84GR7AFR4N-VK) 32GB SDRAM ECC Registered DDR4 2666 (PC4 21300) Server Memory Model MEM-DR432L-HL01-ER26
Kingston Premier Series 32GB 288-Pin DDR4 SDRAM ECC Registered DDR4 3200 (PC4 25600) Server Memory Model KSM32RD4/32MEI
Kingston Technology Corp.
Kingston Premier Series 32GB 288-Pin DDR4 SDRAM ECC Registered DDR4 3200 (PC4 25600) Server Memory Model KSM32RD4/32MEI
  • CAS Latency: 22
  • Timing: 22-22-22
  • Voltage: 1.20V
  • Rank: 2Rx4
  • Model #: KSM32RD4/32MEI
  • Item #: N82E16820242527
  • Return Policy: Standard Return Policy
Supermicro (M393A8G40AB2-CWE) 64GB SDRAM ECC Registered DDR4 3200 (PC4-25600) Server Memory Model MEM-DR464L-SL01-ER32
Supermicro
Supermicro (M393A8G40AB2-CWE) 64GB SDRAM ECC Registered DDR4 3200 (PC4-25600) Server Memory Model MEM-DR464L-SL01-ER32
  • CAS Latency: 22
  • Voltage: 1.20V
  • Rank: 2Rx4
  • Model #: MEM-DR464L-SL01-ER32
  • Item #: 1X5-000A-00PV6
  • Return Policy: Standard Return Policy
Kingston - KSM26RS4/16MEI - Kingston 16GB Module - DDR4 2666MHz Server Premier - 16 GB - DDR4-2666/PC4-2666 DDR4 SDRAM -
Kingston Technology Corp.
Kingston - KSM26RS4/16MEI - Kingston 16GB Module - DDR4 2666MHz Server Premier - 16 GB - DDR4-2666/PC4-2666 DDR4 SDRAM -
  • CAS Latency: 19
  • Timing: 19-19-19
  • Voltage: 1.20V
  • Rank: 1Rx4
  • Model #: KSM26RS4/16MEI
  • Return Policy: View Return Policy
Supermicro (HMA81GR7CJR8N-VK) 8GB SDRAM ECC Registered DDR4 2666 (PC4 21300) Server Memory Model MEM-DR480L-HL05-ER26
SK hynix inc.
Supermicro (HMA81GR7CJR8N-VK) 8GB SDRAM ECC Registered DDR4 2666 (PC4 21300) Server Memory Model MEM-DR480L-HL05-ER26
  • CAS Latency: 19
  • Timing: 19-19-19
  • Voltage: 1.20V
  • Rank: 1Rx8
  • Model #: MEM-DR480L-HL05-ER26
  • Return Policy: View Return Policy
Samsung DDR4 2400 32GB LRDIMM M386A4G40DM1-CRC D Server Memory, Original
SAMSUNG
Samsung DDR4 2400 32GB LRDIMM M386A4G40DM1-CRC D Server Memory, Original
  • CAS Latency: 17
  • Voltage: 1.20V
  • Rank: 4Rx4
  • Model #: M386A4G40DM1-CRC
  • Return Policy: View Return Policy
Supermicro (MTA36ASF4G72PZ-2G6E1) 32GB SDRAM ECC Registered DDR4 2666 (PC4 21300) Server Memory Model MEM-DR432L-CL03-ER26
Supermicro (HMA84GR7CJR4N-XN) 32GB SDRAM ECC Registered DDR4 3200 (PC4 25600) Server Memory Model MEM-DR432L-HL01-ER32
SuperMicro (HMA81GR7CJR8N-XN) 8GB 288-Pin DDR4 SDRAM ECC Registered DDR4 3200 (PC4 25600) Server Memory Model MEM-DR480L-HL01-ER32
Kingston ME KSM29ED8 16HD 16GB 2933MHz DDR4 ECC CL21 DIMM 2Rx8 Hynix D Retail
Kingston ME KSM29ES8 8HD 8GB 2933MHz DDR4 ECC CL21 DIMM 1Rx8 Hynix D Retail
MTA8ATF1G64HZ-3G2J1 Micron  8GB  DDR4-3200MHz Memory
MTA8ATF1G64HZ-3G2J1 Micron 8GB DDR4-3200MHz Memory
  • CAS Latency: 22
  • Voltage: 1.20V
  • Multi-channel Kit: Dual Channel Kit
  • Rank: 1Rx8
  • Model #: 7427063475928
  • Return Policy: View Return Policy
Crucial 16GB DDR4 2666 (PC4-21300) CL19 ECC Unbuffered SODIMM CT16G4TFD8266
Crucial 16GB DDR4 2666 (PC4-21300) CL19 ECC Unbuffered SODIMM CT16G4TFD8266
  • $139.94
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SK HYNIX HMA81GS6CJR8N-XN 8G 3200 DDR4 1Rx8 PC4-3200AA-SA2-11 260Pin SODIMM 1.2V For Laptop
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  • $65.90 
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SAMSUNG 16GB 288-Pin DDR4 SDRAM ECC Registered DDR4 2133 (PC4 17000) Server Memory Model M393A2G40DB0-CPB
Synology D4ECSO-2666-16G Equivalent 16GB DDR4 2666 ECC SODIMM Server Memory RAM
Crucial 32GB (2 x 16GB) 240-Pin DDR3 SDRAM ECC Registered DDR3 1600 (PC3 12800) Server Memory Model CT2K16G3ERSLD4160B
Crucial 32GB (2 x 16GB) 240-Pin DDR3 SDRAM ECC Registered DDR3 1600 (PC3 12800) Server Memory Model CT2K16G3ERSLD4160B
  • CAS Latency: 11
  • Voltage: 1.35V
  • Multi-channel Kit: Dual Channel Kit
  • Rank: 2Rx4
  • Model #: CT2K16G3ERSLD4160B
  • Return Policy: View Return Policy
Crucial 16GB 288-Pin DDR4 SDRAM ECC Registered DDR4 2666 (PC4 21300) Micron Chipset Server Memory Model CT16G4RFD4266
Crucial 64GB (4 x 16GB) 288-Pin DDR4 SDRAM ECC Registered DDR4 2133 (PC4 17000) Server Memory Model CT4K16G4RFD4213
Crucial 64GB (4 x 16GB) 288-Pin DDR4 SDRAM ECC Registered DDR4 2133 (PC4 17000) Server Memory Model CT4K16G4RFD4213
  • CAS Latency: 15
  • Voltage: 1.20V
  • Multi-channel Kit: Quad Channel Kit
  • Model #: CT4K16G4RFD4213
  • Return Policy: View Return Policy
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
  • CAS Latency: 19
  • Voltage: 1.20V
  • Rank: 2Rx8
  • Model #: CT16G4WFD8266
  • Return Policy: View Return Policy
Samsung RDIMM 32GB 2Rx4 DDR4 2400 PC4-2400T 19200 M393A4K40BB1-CRC0Q ECC Registered RAM Memory DIMM For Dell, HP, Lenovo, Supermicro and Other Server Systems
Kingston Premier Series 8GB 288-Pin DDR4 SDRAM ECC Unbuffered DDR4 2666 (PC4 21300) Server Memory Model KSM26ES8/8HD
Kingston Premier Series 8GB 288-Pin DDR4 SDRAM ECC Unbuffered DDR4 2666 (PC4 21300) Server Memory Model KSM26ES8/8HD
  • CAS Latency: 19
  • Timing: 19-19-19
  • Voltage: 1.20V
  • Rank: 1Rx8
  • Model #: KSM26ES8/8HD
  • Item #: N82E16820242559
  • Return Policy: Standard Return Policy
Micron MTA8ATF1G64AZ-2G6E1 DDR4 8G 1RX8 PC4-2666V-UA2-11 For Server
Micron Technology, Inc.
Micron MTA8ATF1G64AZ-2G6E1 DDR4 8G 1RX8 PC4-2666V-UA2-11 For Server
  • CAS Latency: 19
  • Voltage: 1.20V
  • Multi-channel Kit: Dual Channel Kit
  • Rank: 1Rx8
  • Model #: MTA8ATF1G64AZ-2G6E1
  • Return Policy: View Return Policy
Crucial 16GB 288-Pin DDR4 SDRAM ECC Registered DDR4 2933 (PC4 23400) Server Memory Model CT16G4RFS4293
Crucial 32GB DDR4 2666 (PC4-21300) SDRAM Server Memory ECC Registered
Crucial 32GB DDR4 2666 (PC4-21300) SDRAM Server Memory ECC Registered
  • CAS Latency: 19
  • Voltage: 1.20V
  • Multi-channel Kit: Quad Channel Kit
  • Rank: 2Rx4
  • Model #: CT32G4RFD4266
  • Return Policy: View Return Policy
Crucial 32GB (2 x 16GB) 288-Pin DDR4 SDRAM ECC Registered DDR4 2133 (PC4 17000) Server Memory Model CT2K16G4RFD4213
Crucial 16GB (2 x 8GB) 240-Pin DDR3 SDRAM ECC Unbuffered DDR3L 1600 (PC3L 12800) Server Memory Model CT2KIT102472BD160B
Crucial 16GB (2 x 8GB) 240-Pin DDR3 SDRAM ECC Unbuffered DDR3L 1600 (PC3L 12800) Server Memory Model CT2KIT102472BD160B
  • CAS Latency: 11
  • Voltage: 1.35V
  • Multi-channel Kit: Dual Channel Kit
  • Rank: 2Rx8
  • Model #: CT2KIT102472BD160B
  • Return Policy: View Return Policy
Lenovo 4X70N24889 16GB (1x16GB) DDR4 2400 (PC4 19200) SODIMM compatible Memory RAM
Lenovo 4X70N24889 16GB (1x16GB) DDR4 2400 (PC4 19200) SODIMM compatible Memory RAM
  • Voltage: 1.20V
  • Rank: 2Rx8
  • Parts: Lifetime Replacement Warranty
  • Model #: MS19200-628K01-972
  • Item #: 9SIA7S684U8150
  • Return Policy: View Return Policy
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  • $83.99 
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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.

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