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A-Tech 64GB (2x32GB) DDR4 3200 MHz UDIMM PC4-25600 (PC4-3200AA) CL22 DIMM 2Rx8 Non-ECC Desktop RAM Memory Modules
A-Tech

A-Tech 64GB (2x32GB) DDR4 3200 MHz UDIMM PC4-25600 (PC4-3200AA) CL22 DIMM 2Rx8 Non-ECC Desktop RAM Memory Modules

Bottom line: The A-Tech 64GB (2x32GB) DDR4 3200 MHz UDIMM PC4-25600 (PC4-3200AA) CL22 ($498.70 on Amazon as of 2026-10-20 22:13 UTC): 64GB from just two 32GB sticks, leaving slots open on four-slot boards; main trade-off: CL22 timings are looser than enthusiast DDR4-3200 kits sold at CL16.

$498.70

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Buy on Amazon — $498.70 Compare to similar memory (ram)

Complete build that uses this part: Best Parts for a CPU-Offload Local LLM Build in 2026 (Memory) — see the full parts list for the rest of the build.

This part is in Best Parts for a CPU-Offload Local LLM Build in 2026: $1,630.28 for 7 of 8 parts, including this part (CPU cooler not included — no current Amazon price), at Amazon prices checked or later (price may vary). 🛒 Add the 7 priced parts to Amazon cart

By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For desktop and laptop memory upgrades, synthesises manufacturer specs and independent reviews rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

*Price sourced from Amazon.com. Last updated 2026-10-20. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ 64GB from just two 32GB sticks, leaving slots open on four-slot boards
  • ✓ Runs 3200 MHz at JEDEC-standard 1.2V, so no XMP profile is required
  • ✓ Dual-rank 2Rx8 modules suited to memory-heavy multitasking and VMs
  • ✓ Backed by A-Tech's lifetime warranty
  • ✓ A-Tech tech support available both before and after purchase

Cons

  • ✗ CL22 timings are looser than enthusiast DDR4-3200 kits sold at CL16
  • ✗ DDR4 desktop UDIMM only; no DDR5 boards or laptop SO-DIMM slots
  • ✗ Non-ECC, so not for workstations or servers that require ECC memory
  • ✗ 64GB is more than most gaming-only builds will use

Manufacturer description

The A-Tech 64GB DDR4 3200 MHz kit gives your desktop a large memory upgrade without a platform change. It contains two 32GB UDIMM modules. Each 288-pin stick runs at up to 3200 MHz (PC4-25600 / PC4-3200AA) with CL22 timings at the JEDEC-standard 1.2V. That is the same spec your DDR4 motherboard already expects, so the kit does not depend on an overclocked XMP profile. The modules are dual rank (2Rx8), non-ECC and unbuffered. Consumer and most prosumer DDR4 desktop boards are built for this configuration. Because the 64GB fits on two sticks, a four-slot board keeps two slots open for later…

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SpecPicks Verdict

SpecPicks scored A-Tech 64GB (2x32GB) DDR4 3200 MHz UDIMM PC4-25600 (PC4-3200AA) CL22… using a rating × review-volume × price-fit model applied to published specs and reviews across the memory (ram) category. A-Tech's memory (ram) lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for memory (ram) of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

Will this A-Tech 64GB kit work in my desktop?

It is built for DDR4 desktops that accept 288-pin non-ECC unbuffered DIMMs (UDIMMs). A-Tech lists it as compatible with select DDR4 desktop computers, so check your motherboard's supported memory type and maximum capacity first. It will not fit DDR5 boards or laptop SO-DIMM slots.

What speed and timings does this RAM run at?

Each module is rated for up to 3200 MHz (PC4-25600 / PC4-3200AA) with CL22 latency at 1.2V. That is the JEDEC DDR4 standard, so it can run at rated speed without enabling an XMP overclock profile, provided your CPU and motherboard support DDR4-3200.

Is this kit ECC or registered memory?

No. These are non-ECC, unbuffered modules. They will not work in servers or workstations that require registered (RDIMM) or ECC memory.

How many modules are in the kit, and are they single or dual rank?

The kit has two 32GB modules for 64GB total. Both are dual rank (2Rx8).

What warranty and support does A-Tech offer?

A-Tech backs this kit with a lifetime warranty, and its tech support team is available before and after purchase. Check the product listing or A-Tech directly for the current warranty claim process.

Key Features

  • Compatible with select DDR4 Desktop computers + Easy to install at home, no expertise required
  • Maximize your system's performance, boost loading speeds and multitask with ease
  • Backed by A-Tech's Lifetime Warranty + Friendly tech support team available to help before and after your purchase
  • 64GB RAM Kit ( 2 x 32GB Modules ) | DDR4 DIMM 288-Pin | Speeds up to 3200MHz, PC4-25600 / PC4-3200AA
  • NON-ECC Unbuffered | 2Rx8 - Dual Rank | JEDEC DDR4 standard 1.2V

Full Specifications

Size64GB Kit (2 x 32GB)
BrandA-Tech
ModelAT32G2D4D3200ND8N12V
WarrantyLimited Lifetime Warranty Covering Defects In Materials And Workmanship
UnitCount2
ManufacturerA-Tech
ItemPartNumberAT32G2D4D3200ND8N12V

Ready to buy?

A-Tech 64GB (2x32GB) DDR4 3200 MHz UDIMM PC4-25600 (PC4-3200AA) CL22 DIMM 2Rx8 Non-ECC Desktop RAM Memory Modules is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $498.70

*Price sourced from Amazon.com. Last updated 2026-10-20. Price and availability subject to change.

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A-Tech 64GB (2x32GB) DDR4 3200 MHz UDIMM PC4-25600 (PC4-3200AA) CL22 DIMM 2Rx8 Non-ECC Desktop RAM Memory Modules
$498.70
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