SK Hynix
SK hynix 16GB/2Gx4 DDR4 PC4-21300 2666MHz /2Gx4 ECC/REG CL19 Server Memory Model HMA82GR7CJR4N-VK
Available Styles / Variations:
Enterprise ECC Stability
Validated by C.R. Vinoth Kumar ยท 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
$137.80$8.61/GBAs of May 30, 2026 ยท Verify on Amazon ยท Price subject to change
$/GB vs DDR4 market avg
16% below avgDeal score
65/100
At $8.61/GB โ 16% below the DDR4 market average.
Good time to buy
Price is near its tracked low of $174.00 โ in the bottom 20% of its recorded range.
Verify 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: B089G8QXF4) 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
- 16% below the overall DDR4 market average $/GB
- Price near its tracked low of $174.00
Limitations
- No customer reviews available yet on Amazon
- Requires ECC-compatible CPU and motherboard โ not supported on most consumer platforms
All points are derived from price data, customer ratings, and product specifications โ not editorial opinion. Updated daily.
Is This RAM Right for You?
Based on 16GB DDR4 ECC DIMM specifications.
ECC RAM is not supported on gaming platforms (consumer CPUs/boards)
ECC RAM requires server-grade hardware โ not compatible with standard office PCs
ECC RAM protects long renders from silent data corruption โ ideal for professional workstations
ECC RAM detects and corrects memory errors โ required for data-critical servers and ZFS storage
This is a desktop DIMM โ laptop upgrades require SO-DIMM modules. See Laptop RAM Prices for compatible options.
Verdicts based on capacity, form factor, and ECC specifications โ not editorial opinion. Capacity recommendations reflect 2026 software requirements.
Price History
Updated daily โ track price trends over time
Current
$189.99
38d Low
$174.00
38d High
$189.99
38d Avg
$188.31
Price Range
Tracked low
$174.00Current
$137.80Tracked high
$189.99โ Near tracked low
Speed Ranking
Top 46%
2666MHz ranks in the top 46% of all DDR4 speeds tracked (1,546 modules).
Z-Score Deviation
Exceptional Bargain (Highly Underpriced)
Deviation: -10.29ฯ
Extremely rare deal! The price is more than 2 standard deviations below the historical average.
Specifications
Memory TypeDDR generation (DDR4 vs DDR5) ยท guide | DDR4 |
CapacityTotal kit memory size ยท guide | 16GB |
| Kit Config | โ Single stick โ runs in single-channel mode. Buy 2ร for dual-channel performance. |
SpeedFrequency in MT/s or MHz ยท guide | 2666MHz |
CAS LatencyClock cycles response delay ยท guide | CL19 |
True LatencyAbsolute nanosecond latency | 14.25 ns(High latency)= (19 ร 2000) รท 2666 |
Form FactorDIMM (Desktop) vs SO-DIMM (Laptop) | RDIMM |
ECCError-correcting capability ยท guide | Yes |
ASIN | B089G8QXF4 |
Spotted a wrong price or spec? Report a data correction ยท How we verify data
Cheaper Alternatives
Same 16GB DDR4 โ lower $/GB than this product
SK Hynix
Server Premier 16GB 2666MT/s DDR4 ECC CL19 DIMM 2Rx8 Server Memory Hynix D - KSM26ED8/16HD62% cheaper/GB
28% cheaper/GB
6% cheaper/GB
Ranked by lowest $/GB. Same 16GB DDR4 DIMM only. Prices updated daily.
DDR4 Price by Capacity
Average $/GB across all DDR4 modules in the database
| Capacity | Avg $/GB |
|---|---|
| 8GB | $9.68/GB |
| 16GBThis product | $9.70/GB |
| 32GB | $9.02/GB |
| 64GB | $8.97/GB |
| 128GB | $6.58/GB |
Also available from SK Hynix
Same brand, different configurations
SK Hynix
Hynix 8GB PC4-19200 DDR4 2400MHz 288-Pin Dimm Memory Module Mfr P/N HMA81GU6AFR8N-UH
SK Hynix
Hynix HMA81GS6DJR8N-XN 8gb Ddr4-3200 Unbuffered Mem Disc Prod Spcl Sourcing See Notes
SK Hynix
Hynix 8GB PC4-21300 DDR4-2666MHz 288-Pin DIMM 1.2V Memory RAM Module HMA81GU6CJR8N-VK
Related pages
Frequently Asked Questions
Is the SK Hynix 16GB 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 $8.61/GB, this module is 16% below the overall DDR4 market average $/GB across all capacities. 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 โ most consumer platforms do not support ECC. See our ECC RAM guide for platform compatibility details.
How does SK Hynix RAM compare to other brands?
SK Hynix has 178 modules tracked with an average customer rating of 4.5โ . This specific module is 16% below the overall DDR4 market average $/GB. Browse all SK Hynix modules or use the comparison tool to see how it stacks up against Corsair, G.Skill, Kingston, and Crucial.
Is 16GB of RAM enough for gaming in 2026?
16GB is the minimum recommended for gaming in 2026. Most AAA titles use 12โ16GB alongside Discord and a browser. 32GB is the sweet spot if you also stream, record, or run VMs.
What is the difference between a single 16GB stick and a 2ร8GB kit?
A single 16GB stick runs in single-channel mode, using only one memory channel. A 2ร8GB kit of the same total capacity runs in dual-channel mode, doubling memory bandwidth and improving real-world performance by 10โ30%. For best performance, always buy RAM in matched pairs.
Similar DDR4 RAM
A-Tech
A-Tech 16GB DDR4 2400 MHz UDIMM PC4-19200 (PC4-2400T) CL17 DIMM 2Rx8 Non-ECC Desktop RAM Memory Module
Crucial
Crucial 16GB Kit (8GB x 2) DDR4 2666 MT/s (PC4-21300) UDIMM 288-Pin Memory - CT2K8G4DFRA266
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.