A-Tech
A-Tech 512GB Kit (8x64GB) DDR4 2666MHz PC4-21300 ECC RDIMM 4Rx4 (3DS 2S2Rx4) Quad Rank 1.2V ECC Registered DIMM 288-Pin Server & Workstation RAM Memory Upgrade Modules (A-Tech Enterprise Series)
Available Styles / Variations:
Enterprise ECC Stability
Validated by C.R. Vinoth Kumar · Founder & Senior Editor
This is an Error Correcting Code (ECC) server module designed to prevent silent data corruption in 24/7 server environments (like TrueNAS/ZFS or enterprise workloads). Ensure your motherboard and CPU officially support ECC before purchasing.
Current price
$1595.00$3.12/GBAs of May 30, 2026 · Verify on Amazon · Price subject to change
$/GB vs DDR4 market avg
70% below avgDeal score
93/100
At $3.12/GB — 70% below the DDR4 market average.
Buy on AmazonLoad alertsVerify Alternative Stores
Our systems refresh prices daily from Amazon.com to secure the absolute lowest USD market rate. You can cross-reference this RAM kit (ASIN: B0C2FWW7W7) against alternative marketplaces like Newegg or Crucial before buying.
Product prices and availability are accurate as of the date of the last daily update and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product. As an Amazon Associate we earn from qualifying purchases.
At a Glance
Strengths
- 70% below the overall DDR4 market average $/GB
Limitations
- Limited review data — only 5 Amazon reviews
- Limited price history — recently added to tracking, trends not yet available
- Requires ECC-compatible CPU and motherboard — not supported on most consumer platforms
- Availability unconfirmed — may be out of stock or delisted
All points are derived from price data, customer ratings, and product specifications — not editorial opinion. Updated daily.
Is This RAM Right for You?
Based on 512GB (8x64) DDR4 ECC DIMM specifications.
ECC RAM is not supported on gaming platforms (consumer CPUs/boards)
ECC RAM requires server-grade hardware — not compatible with standard office PCs
ECC RAM protects long renders from silent data corruption — ideal for professional workstations
ECC RAM detects and corrects memory errors — required for data-critical servers and ZFS storage
This is a desktop DIMM — laptop upgrades require SO-DIMM modules. See Laptop RAM Prices for compatible options.
Verdicts based on capacity, form factor, and ECC specifications — not editorial opinion. Capacity recommendations reflect 2026 software requirements.
Price History
Updated daily — track price trends over time
Current
$1,595.00
3d Low
$1,595.00
3d High
$1,595.00
3d Avg
$1,595.00
Speed Ranking
Top 46%
2666MHz ranks in the top 46% of all DDR4 speeds tracked (1,546 modules).
Specifications
Memory TypeDDR generation (DDR4 vs DDR5) · guide | DDR4 |
CapacityTotal kit memory size · guide | 512GB (8x64) |
| Kit Config | ✓ 8× kit — dual-channel ready |
SpeedFrequency in MT/s or MHz · guide | 2666MHz |
Form FactorDIMM (Desktop) vs SO-DIMM (Laptop) | RDIMM |
ECCError-correcting capability · guide | Yes |
VoltageOperating voltage level | 1.2V |
ASIN | B0C2FWW7W7 |
Spotted a wrong price or spec? Report a data correction · How we verify data
DDR4 Price by Capacity
Average $/GB across all DDR4 modules in the database
| Capacity | Avg $/GB |
|---|---|
| 8GB | $9.68/GB |
| 16GB | $9.70/GB |
| 32GB | $9.02/GB |
| 64GB | $8.97/GB |
| 128GB | $6.58/GB |
| 512GBThis product | $3.12/GB |
Also available from A-Tech
Same brand, different configurations
A-Tech
A-Tech 8GB (2x4GB) DDR4 2666 MHz UDIMM PC4-21300 (PC4-2666V) CL19 DIMM Non-ECC Desktop RAM Memory Modules
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A-Tech 64GB (2x32GB) DDR4 2666 MHz UDIMM PC4-21300 (PC4-2666V) CL19 DIMM 2Rx8 Non-ECC Desktop RAM Memory Modules
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A-Tech 8GB (2x4GB) DDR4 2400 MHz UDIMM PC4-19200 (PC4-2400T) CL17 DIMM Non-ECC Desktop RAM Memory Modules
Related pages
Frequently Asked Questions
Is the A-Tech 512GB (8x64) 2666MHz DDR4 compatible with my motherboard?
Compatibility depends on your motherboard's supported memory type (DDR4), speed, and capacity. Check your motherboard manufacturer's QVL list to confirm this module is validated for your specific board.
Is this DDR4 module a good deal right now?
At $3.12/GB, this module is 70% below the overall DDR4 market average $/GB across all capacities. Deal score: 93/100. Check the price history chart above to see how the price has moved recently. Prices are updated daily from Amazon.
What is 2666MHz RAM used for?
This is an ECC (Error-Correcting Code) RAM module designed for servers, workstations, and NAS systems where data integrity is critical. ECC RAM detects and corrects single-bit memory errors automatically. It requires a compatible CPU and motherboard — most consumer platforms do not support ECC. See our ECC RAM guide for platform compatibility details.
How does A-Tech RAM compare to other brands?
A-Tech has 283 modules tracked with an average customer rating of 4.6★. This specific module is 70% below the overall DDR4 market average $/GB. Browse all A-Tech modules or use the comparison tool to see how it stacks up against Corsair, G.Skill, Kingston, and Crucial.
Is 512GB of RAM enough for gaming in 2026?
512GB is more than enough for gaming in 2026. Most AAA titles use 16–24GB alongside Discord and a browser. 512GB gives you headroom for streaming, recording, and running multiple applications simultaneously.
What is the difference between a single 512GB stick and a 2×256GB kit?
This is already a 8×64GB dual-channel kit — the correct configuration for maximum performance. Dual-channel mode doubles the memory bandwidth by using both memory channels simultaneously, improving performance in games and applications by 10–30% compared to a single stick of the same total capacity.
Similar DDR4 RAM
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A-Tech 512GB Kit (8x64GB) DDR4 2666MHz PC4-21300 ECC LRDIMM 4Rx4 (4DRx4) Quad Rank 1.2V Load Reduced DIMM 288-Pin Server RAM Memory Upgrade Modules (A-Tech Enterprise Series)
Crucial
Crucial 8GB Single DDR4 2400 MT/s (PC4-19200) DR x8 DIMM 288-Pin Memory - CT8G4DFD824A
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A-Tech 8GB (2x4GB) DDR4 2666 MHz UDIMM PC4-21300 (PC4-2666V) CL19 DIMM Non-ECC Desktop RAM Memory Modules
Expertly Curated by C.R. Vinoth Kumar
Lead Hardware AnalystC.R. Vinoth Kumar is a senior systems systems engineer and memory hardware architect with over 12 years of experience benchmarking computer components, building performance virtualization servers, and assembling local LLM inference rigs. Every memory module tracked in our database is mathematically checked using custom telemetry to isolate nanosecond CAS latency bounds, price-per-gigabyte market averages, and Ryzen/Intel platform pairings.
As an Amazon Associate we earn from qualifying purchases. Prices are updated daily and may change on Amazon.