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16GB RAM Replacement for Dell A3721495, A3721501 | DDR3 1066MHz PC3-8500 ECC RDIMM 4Rx4 Server Memory
- 16GB ( 1x 16GB Module ) | DDR3 1066 MHz ( PC3-8500 ) | DDR3 DIMM ( 240-Pin ) | ECC RDIMM ( Registered DIMM ) | 1.5V - DDR3 Standard Voltage
- Compatible Equivalent for Dell A3721495, A3721501
- 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
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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 Dell:
A3721495
A3721501
Memory Specs
Memory Size: 16 GB ( 1 x 16 GB Module )
Memory Type: DDR3
Form Factor: DIMM ( 240 Pin )
Speed: DDR3 1066 MHz ( PC3-8500 )
ECC Type: ECC RDIMM ( Registered DIMM )
Voltage: 1.5V
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 Dell:
A3721495
A3721501
Memory Specs
Memory Size: 16 GB ( 1 x 16 GB Module )
Memory Type: DDR3
Form Factor: DIMM ( 240 Pin )
Speed: DDR3 1066 MHz ( PC3-8500 )
ECC Type: ECC RDIMM ( Registered DIMM )
Voltage: 1.5V
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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This A-Tech 16GB DDR3-1066 ECC Registered DIMM is a 240-pin, 1.5V server-memory replacement equivalent to Dell A3721495 and A3721501, for compatible servers and workstations that support 4Rx4 RDIMMs.
Recommended For
- Owners of an older server whose manual specifies 16GB DDR3-1066 ECC registered 4Rx4 DIMMs, replacing a failed module or adding memory while matching the platform’s supported configuration.
- Homelab operators expanding a compatible older Xeon server for several virtual machines, containers, or self-hosted services, where adding RAM capacity matters more than using a newer memory generation.
- Administrators maintaining a compatible legacy Dell server who need an ECC registered replacement module for server, storage, or backup duties rather than a platform-wide upgrade.
Real-World Use Scenarios
- On a compatible Dell server used as a Proxmox or similar hypervisor, adding this module can give existing virtual machines more memory headroom and help accommodate another light VM, depending on the server’s total capacity and workload.
- For a small homelab running several containers or server services on an older Dell system, the extra capacity can reduce memory pressure when more services run at once; it will not address CPU, storage, or network limits.
- In a compatible home or small-office file server, adding memory can provide more room for the operating system and background services while files are shared or backups run; actual transfer speeds still depend on the drives, network, and server.
- When an older compatible Dell server is short on memory for a modest self-hosted workload, this 16GB module can expand installed capacity for services such as a test web server or small database, subject to the system’s memory limits and population rules.
Spec Summary
| Attribute | Value |
|---|---|
| Best For | Server and workstation systems that support 16GB DDR3 ECC registered memory |
| Capacity | 16GB |
| Memory Type And Configuration | DDR3-1066 (PC3-8500), ECC registered memory with a 4Rx4 rank configuration |
| Memory Timing | CL7 CAS latency |
| Voltage | 1.50V |