Samsung
Samsung Memory Bundle with 128GB (4 x 32GB) DDR4 PC4-21300 2666MHz RDIMM (4 x M393A4K40CB2-CTD) Registered Server Memory
Current price
$899.00$7.02/GBAs of May 30, 2026 · Verify on Amazon · Price subject to change
$/GB vs DDR4 market avg
32% below avgDeal score
93/100
At $7.02/GB — 32% below the DDR4 market average.
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Our systems refresh prices daily from Amazon.com to secure the absolute lowest USD market rate. You can cross-reference this RAM kit (ASIN: B081K7STC4) 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
- 32% below the overall DDR4 market average $/GB
Limitations
- Limited review data — only 43 Amazon reviews
- Limited price history — recently added to tracking, trends not yet available
- 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 128GB (4x32) DDR4 DIMM specifications.
128GB eliminates memory as a bottleneck for AAA titles and multitasking
128GB handles office apps, video calls, and multiple browser tabs comfortably
128GB handles 4K/8K video editing, complex 3D rendering, and large project files
Non-ECC RAM is not recommended for servers or NAS — silent data corruption risk without error correction
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
$899.00
37d Low
$899.00
37d High
$899.00
37d Avg
$899.00
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 | 128GB (4x32) |
| Kit Config | ✓ 4× kit — dual-channel ready |
SpeedFrequency in MT/s or MHz · guide | 2666MHz |
Form FactorDIMM (Desktop) vs SO-DIMM (Laptop) | RDIMM |
ASIN | B081K7STC4 |
Spotted a wrong price or spec? Report a data correction · How we verify data
Platform Pairing Guide
How well 2666MHz performs on each platform — based on memory controller characteristics and manufacturer guidance.
| Platform | Benefit |
|---|---|
| AMD AM4 (Ryzen 1000–5000) | ✓ Good |
| Intel LGA1200 (10th/11th gen) | ★ Optimal |
| Intel LGA1700 DDR4 (12th–14th gen) | ✓ Good |
Platform guidance based on AMD and Intel official specifications and independent testing. Always verify compatibility with your specific motherboard's QVL.
Motherboard Compatibility
Most popular DDR4 boards per platform
ASUS TUF Gaming B550-Plus WiFi II / MSI MAG B550 Tomahawk
B550 is the top AM4 chipset. DDR4-3600 CL16 is the sweet spot.
Gigabyte B760M D2H DDR4 / ASUS Prime B760M-A D4
B760 DDR4 boards support 12th–14th Gen Intel with DDR4.
ASUS Prime B560M-A / MSI MAG B560 Tomahawk WiFi
DDR4-3200 is the official LGA1200 maximum — ideal match.
Always verify with your board's QVL before purchasing.
Cheaper Alternatives
Same 128GB DDR4 — lower $/GB than this product
Kingston
Kingston Fury Beast 128GB (4x32GB) 3200MHz DDR4 CL16 Desktop Memory Kit of 4 KF432C16BBK4/128, Black48% cheaper/GB
Ranked by lowest $/GB. Same 128GB 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 |
| 16GB | $9.70/GB |
| 32GB | $9.02/GB |
| 64GB | $8.97/GB |
| 128GBThis product | $6.58/GB |
Upgrade Cost Calculator
How much more (or less) would you spend to step up or down in capacity? Prices shown are the cheapest available DDR4 DIMM in each tier today.
Current
128GB
$899.00$7.02/GBPrices are the lowest available in each tier from our daily database — verify on Amazon before purchasing. Only DDR4 DIMM modules compared.
Also available from Samsung
Same brand, different configurations
Samsung
M378A1K43CB2-CTD Memory Module (8 GB, 1 x 8 GB, DDR4, 2666 MHz, 288-pin DIMMM, Black, Green)
Samsung
8GB DDR4 PC4-21300 2666MHz 288 PIN UDIMM 1.2V CL 19 Desktop ram Memory Module M378A1K43DB2-CTD
Samsung
SAMSUNG 8GB DDR4 PC4-19200, 2400MHZ, 288 PIN DIMM, 1.2V, CL 17 Desktop RAM Memory Module M378A1K43BB2-CRC
Related pages
Frequently Asked Questions
Is the Samsung 128GB (4x32) 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 $7.02/GB, this module is 32% 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?
DDR4 RAM is used in Intel LGA1200/LGA1700 and AMD AM4 (Ryzen 1000-5000) systems. It offers excellent value for existing platforms. 2666MHz is a standard DDR4 speed tier.
How does Samsung RAM compare to other brands?
Samsung has 133 modules tracked with an average customer rating of 4.6★. This specific module is 32% below the overall DDR4 market average $/GB. Browse all Samsung modules or use the comparison tool to see how it stacks up against Corsair, G.Skill, Kingston, and Crucial.
Is 128GB of RAM enough for gaming in 2026?
128GB is more than enough for gaming in 2026. Most AAA titles use 16–24GB alongside Discord and a browser. 128GB gives you headroom for streaming, recording, and running multiple applications simultaneously.
What is the difference between a single 128GB stick and a 2×64GB kit?
This is already a 4×32GB 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
Corsair
Corsair Vengeance LPX 128GB (4x32GB) DDR4 3600 (PC4-28800) C18 1.35V Desktop Memory - Black
128GB (4X32GB) DDR4 2666MHZ PC4-21300 UDIMM 2Rx8 1.2V CL19 288-PIN Non-ECC Unbuffered Desktop PC Computer Memory KIT
128GB (4X32GB) DDR4 3200MHZ PC4-25600 UDIMM 2Rx8 1.2V CL22 288-PIN Non-ECC Unbuffered Desktop PC Computer Memory KIT
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.