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16GB RAM Replacement for HP 798038-001, 816496-971, 820571-001, 820571-002, 834942-001, 865965-001, 865979-001, P1N55AA, P1N55AT, T0H91AA, X2E91AA | DDR4 2133MHz PC4-17000 SODIMM 2Rx8 Laptop Memory
- 16GB ( 1x 16GB Module ) | DDR4 2133 MHz ( PC4-17000 ) | DDR4 SODIMM ( 260-Pin ) | Non-ECC SODIMM ( Unbuffered SO-DIMM ) | 1.2V - DDR4 Standard Voltage
- Compatible Equivalent for HP 820571-002, 834942-001, 865979-001, T0H91AA, 816496-971, 820571-001, P1N55AA, X2E91AA, 865965-001, 798038-001, P1N55AT
- High performance Memory RAM upgrade designed for Laptop/Notebook/All-in-One Computer 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 HP:
820571-002
834942-001
865979-001
T0H91AA
816496-971
820571-001
P1N55AA
X2E91AA
865965-001
798038-001
P1N55AT
Memory Specs
Memory Size: 16 GB ( 1 x 16 GB Module )
Memory Type: DDR4
Form Factor: SO-DIMM ( 260 Pin )
Speed: DDR4 2133 MHz ( PC4-17000 )
ECC Type: Non-ECC SO-DIMM ( Unbuffered SO-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 HP:
820571-002
834942-001
865979-001
T0H91AA
816496-971
820571-001
P1N55AA
X2E91AA
865965-001
798038-001
P1N55AT
Memory Specs
Memory Size: 16 GB ( 1 x 16 GB Module )
Memory Type: DDR4
Form Factor: SO-DIMM ( 260 Pin )
Speed: DDR4 2133 MHz ( PC4-17000 )
ECC Type: Non-ECC SO-DIMM ( Unbuffered SO-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 16GB DDR4-2133 SO-DIMM is a laptop memory module for systems that support 260-pin, 1.2V, non-ECC unbuffered DDR4-2133 memory, including compatible HP systems listed for this replacement.
Recommended For
- Owners of a verified-compatible HP laptop with less than 16GB of RAM who keep many browser tabs, office apps, or video calls open and want more memory headroom.
- People replacing a failed or missing memory module in a compatible HP system that specifies a 16GB DDR4-2133 SO-DIMM spare part.
- Refurbishers or DIY maintainers upgrading a supported older HP business laptop or mobile workstation for everyday office and multitasking use, after checking the exact model’s memory limit and slot configuration.
- Users with a compatible system who need a single 16GB module for a capacity upgrade or replacement, rather than a pre-matched multi-module kit.
Real-World Use Scenarios
- When a compatible laptop is running low on memory, keeping many browser tabs open alongside email and office documents can feel less sluggish when switching between them after the upgrade brings the system to a supported 16GB configuration.
- For everyday multitasking—office files, browser tabs, and audio or video streaming open together—more available memory can help avoid slowdowns caused by the laptop running short of RAM.
- When switching frequently between several work apps, a RAM upgrade may make app and document switching smoother if the laptop’s current memory is nearly full; it will not fix slowdowns caused by an older processor or storage drive.
- For routine photo work, such as editing several images while other apps remain open, a supported 16GB configuration provides more room for multitasking than a memory-constrained setup; demanding edits may still depend on the laptop’s processor and graphics hardware.
- If an older compatible laptop regularly reaches high memory use during normal work, upgrading may help it stay responsive with several apps open; check the laptop’s supported capacity and slot configuration before installing this 16GB module.
Spec Summary
| Attribute | Value |
|---|---|
| Best For | Laptop memory upgrades for AMD- and Intel-compatible systems |
| Capacity And Performance | 16GB DDR4 memory rated at 2133 (PC4 17000), with CL15 CAS latency |
| Module Type And Compatibility | 260-pin DDR4 SO-DIMM; non-ECC and unbuffered |
| Voltage | 1.20V |
| Brand And Components | A-Tech memory with major-brand chips |















