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8GB RAM Replacement for Hynix HMA81GU7AFR8N-VK, HMA81GU7CJR8N-VK, HMA81GU7DJR8N-VK | DDR4 2666MHz PC4-21300 ECC UDIMM 1Rx8 Server Memory
- 8GB ( 1x 8GB Module ) | DDR4 2666 MHz ( PC4-21300 ) | DDR4 DIMM ( 288-Pin ) | ECC UDIMM ( ECC Unbuffered DIMM ) | 1.2V - DDR4 Standard Voltage
- Compatible Equivalent for Hynix HMA81GU7AFR8N-VK, HMA81GU7CJR8N-VK, HMA81GU7DJR8N-VK
- High performance Memory RAM upgrade designed for Server/Workstation Systems
- All modules undergo quality assurance testing to ensure dependable and reliable performance | Please verify the supported memory (RAM) specifications of your system prior to purchase to ensure compatibility
- A-Tech provides a Lifetime Warranty for all orders & offers complimentary United States based Tech Support before, during, & after your purchase
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Overview
Specs
Reviews
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An A-Tech Memory (RAM) upgrade is an easy, quick way to boost your system's performance by speeding up loading times, improving system responsiveness, and increasing your system's ability to handle higher workloads. Take on more and multitask with ease with a simple and affordable A-Tech Memory upgrade!
Compatible Memory Module Replacement for Hynix:
HMA81GU7AFR8N-VK
HMA81GU7CJR8N-VK
HMA81GU7DJR8N-VK
Memory Specs
Memory Size: 8 GB ( 1 x 8 GB Module )
Memory Type: DDR4
Form Factor: DIMM ( 288 Pin )
Speed: DDR4 2666 MHz ( PC4-21300 )
ECC Type: ECC UDIMM ( ECC Unbuffered DIMM )
Voltage: 1.2V
Ensured Reliability
All A-Tech Memory products are rigorously tested to ensure that your memory meets our stringent quality and performance standards.
Lifetime Warranty
Purchase with confidence knowing that all A-Tech orders are backed with our Lifetime Warranty.
US Based Technical Support
Need help? Have questions? Our 5 star United States based support team is here to help before, during, and after your purchase to make sure you are completely satisfied with your A-Tech Memory!
Compatible Memory Module Replacement for Hynix:
HMA81GU7AFR8N-VK
HMA81GU7CJR8N-VK
HMA81GU7DJR8N-VK
Memory Specs
Memory Size: 8 GB ( 1 x 8 GB Module )
Memory Type: DDR4
Form Factor: DIMM ( 288 Pin )
Speed: DDR4 2666 MHz ( PC4-21300 )
ECC Type: ECC UDIMM ( ECC Unbuffered DIMM )
Voltage: 1.2V
Ensured Reliability
All A-Tech Memory products are rigorously tested to ensure that your memory meets our stringent quality and performance standards.
Lifetime Warranty
Purchase with confidence knowing that all A-Tech orders are backed with our Lifetime Warranty.
US Based Technical Support
Need help? Have questions? Our 5 star United States based support team is here to help before, during, and after your purchase to make sure you are completely satisfied with your A-Tech Memory!
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
- CONTACT
Return Policies
- Return for refund within: 30 days
- Return for replacement within: 30 days
- This item is covered by A-Tech Return Policy
Manufacturer Contact Info
- For a directory of all our manufacturers, please click below.
- Manufacturers Directory
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The A-Tech 8GB DDR4-2666 ECC UDIMM is a 288-pin, unbuffered 1Rx8 server memory module for compatible server and workstation systems, including systems that support the listed Hynix equivalents. Check your system’s memory requirements before purchasing.
Recommended For
- Owners of a compatible DDR4-2666 ECC UDIMM server or workstation replacing an 8GB Hynix HMA81GU7AFR8N-VK, HMA81GU7CJR8N-VK, or HMA81GU7DJR8N-VK module.
- Workstation users whose motherboard and processor support ECC UDIMM and who want error-correcting memory for their existing DDR4 system.
- Small-server operators maintaining a DDR4-2666 ECC UDIMM platform who need one 8GB module, rather than a registered-memory module or a multi-module kit.
- Repair technicians or system owners restoring a supported DDR4-2666 workstation to its existing 8GB-per-module configuration.
Real-World Use Scenarios
- Replacing a failed DIMM or adding memory in a compatible DDR4 ECC UDIMM workstation or server: the 8GB module can restore or expand memory capacity, provided the system supports this module type and configuration.
- Running a small home NAS or file server: in a system that supports and enables ECC, this memory can help detect and correct certain memory errors while the server handles storage and backups; ECC is not a substitute for backups or storage protections.
- Hosting a few lightweight home-lab services, such as DNS, home automation, or a small game server: an 8GB module can contribute memory to a compatible system, though the usable capacity depends on the operating system and services running.
- Using a compatible workstation for tasks where memory-error detection is valued: if the CPU, motherboard, and system configuration support ECC, the module can provide error-correction capability rather than a noticeable performance boost.














