Your Browsing History
Meet Your Seller
Visit A-Tech Store
FOLLOW
32GB RAM Replacement for HP 647904-B21, 684590-001, A2Z53AA | DDR3 1600MHz PC3L-12800 ECC LRDIMM 4Rx4 Server Memory
- 32GB ( 1x 32GB Module ) | DDR3 1600 MHz ( PC3-12800 ) | DDR3 DIMM ( 240-Pin ) | ECC LRDIMM ( Load Reduced DIMM ) | 1.35V - DDR3 Low Voltage
- Compatible Equivalent for HP A2Z53AA, 684590-001, 647904-B21
- 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
+
+
Overview
Specs
Reviews
Any questions? Ask CelesteSM will help you find out quickly.
Try me now
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 HP:
A2Z53AA
684590-001
647904-B21
Memory Specs
Memory Size: 32 GB ( 1 x 32 GB Module )
Memory Type: DDR3
Form Factor: DIMM ( 240 Pin )
Speed: DDR3 1600 MHz ( PC3-12800 )
ECC Type: ECC LRDIMM ( Load Reduced 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 HP:
A2Z53AA
684590-001
647904-B21
Memory Specs
Memory Size: 32 GB ( 1 x 32 GB Module )
Memory Type: DDR3
Form Factor: DIMM ( 240 Pin )
Speed: DDR3 1600 MHz ( PC3-12800 )
ECC Type: ECC LRDIMM ( Load Reduced 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
LOADING...
A-Tech 32GB DDR3L-1600 ECC LRDIMM server memory is a single 240-pin, 4Rx4 module designed for compatible servers and workstations, including systems that support HP part numbers A2Z53AA, 684590-001, or 647904-B21.
Recommended For
- Owners of a server or workstation whose exact model supports 32GB DDR3L-1600 ECC LRDIMMs and who want to add one 32GB module. Verify the system’s memory rules and slot population before buying.
- Operators of LRDIMM-capable legacy servers who need more memory capacity for multiple virtual machines or server workloads. LRDIMMs are intended for higher-density server memory configurations, but the platform must support this module’s exact type and speed.
- Homelab users keeping a compatible DDR3 server in service for workloads such as virtualization, storage, or self-hosted services, and seeking a 32GB-per-slot capacity upgrade.
Real-World Use Scenarios
- When a supported HP server is running out of memory for virtual machines, adding this module can increase available RAM for guest systems; the result depends on the server’s DIMM configuration and total installed memory.
- For a home lab or small server hosting several services, such as file sharing, email, or test environments, a compatible memory upgrade can provide more room for those workloads to run together before memory becomes a constraint.
- When a server’s database or application workload needs more data in memory, adding a supported module can increase its memory capacity; it does not by itself guarantee faster queries or application response times.
- If a compatible server needs a failed memory module replaced, this ECC LRDIMM can serve as a replacement when the system supports the module type and the required population rules are followed.
Spec Summary
| Attribute | Value |
|---|---|
| Best For | Server and workstation memory upgrades requiring a 32GB DDR3L ECC load-reduced module |
| Memory Configuration | 32GB module with 4Rx4 rank configuration |
| Speed And Timing | DDR3L-1600 (PC3L-12800) with CL11 CAS latency |
| Electrical And Error Correction | 1.35V, ECC, load-reduced memory |
| Module Components | Major-brand chipset and chips |
| Brand | A-Tech |














