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16GB RAM Replacement for Hynix HMT42GR7AMR4A-H9, HMT42GR7BMR4A-H9, HMT42GR7CMR4A-H9 | DDR3 1333MHz PC3L-10600 ECC RDIMM 4Rx4 Server Memory
- 16GB ( 1x 16GB Module ) | DDR3 1333 MHz ( PC3-10600 ) | DDR3 DIMM ( 240-Pin ) | ECC RDIMM ( Registered DIMM ) | 1.35V - DDR3 Low Voltage
- Compatible Equivalent for Hynix HMT42GR7AMR4A-H9, HMT42GR7BMR4A-H9, HMT42GR7CMR4A-H9
- 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
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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:
HMT42GR7AMR4A-H9
HMT42GR7BMR4A-H9
HMT42GR7CMR4A-H9
Memory Specs
Memory Size: 16 GB ( 1 x 16 GB Module )
Memory Type: DDR3
Form Factor: DIMM ( 240 Pin )
Speed: DDR3 1333 MHz ( PC3-10600 )
ECC Type: ECC RDIMM ( Registered DIMM )
Voltage: 1.35V
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:
HMT42GR7AMR4A-H9
HMT42GR7BMR4A-H9
HMT42GR7CMR4A-H9
Memory Specs
Memory Size: 16 GB ( 1 x 16 GB Module )
Memory Type: DDR3
Form Factor: DIMM ( 240 Pin )
Speed: DDR3 1333 MHz ( PC3-10600 )
ECC Type: ECC RDIMM ( Registered DIMM )
Voltage: 1.35V
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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A-Tech 16GB DDR3L-1333 ECC Registered DIMM is a 240-pin, 1.35V 4Rx4 server memory module suited to compatible servers and workstations that support PC3L-10600 RDIMM memory, including systems using the listed Hynix equivalents.
Recommended For
- People maintaining a legacy server that specifically supports 16GB DDR3-1333 ECC registered 4Rx4 DIMMs and needs a single-module replacement or capacity addition.
- IT technicians or refurbishers replacing a Hynix HMT42GR7AMR4A-H9, HMT42GR7BMR4A-H9, or HMT42GR7CMR4A-H9 module in a compatible DDR3 server.
- Owners of older workstations whose motherboard and CPU documentation explicitly allow DDR3 ECC RDIMMs, 4Rx4 modules, and the intended memory population.
- Operators keeping older DDR3 server or workstation hardware in service who need a like-for-like low-voltage memory module rather than a newer DDR generation.
Real-World Use Scenarios
- A homelab operator adding RAM to a compatible legacy server for Proxmox or another hypervisor can use the extra capacity to give virtual machines more memory or run more guests, provided the system supports this module and its memory layout.
- Someone expanding a compatible DDR3 NAS or file server can add memory headroom for storage services and, with ZFS, its memory-dependent workload; the actual benefit depends on the server’s total RAM and configuration.
- A home-server user running several services on an older DDR3 system can add this module to increase available memory for concurrent apps, containers, or file-management tasks, if the platform supports 16GB 4Rx4 ECC Registered DIMMs.
- A technician replacing a failed module in a compatible legacy server or workstation can use this as a 16GB replacement, helping restore memory capacity without changing the whole system; check the system’s supported DIMM type and population rules first.














