Samsung
Samsung 128GB DDR5 4800MHz PC5-38400 ECC RDIMM 4Rx4 2S2Rx4 (EC8 10x4) Quad Rank 1.1V Registered DIMM 288-Pin Server RAM Memory M321RAGA0B20-CWK, 1 Module
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
$395.00$3.09/GBAs of May 30, 2026 · Verify on Amazon · Price subject to change
$/GB vs DDR5 market avg
70% below avgDeal score
92/100
At $3.09/GB — 70% below the DDR5 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: B0D2LZKK41) 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 DDR5 market average $/GB
- Compatible with AMD Threadripper 7000 (TRX50) and AMD Threadripper PRO 7000 (sWRX9)
Limitations
- Limited review data — only 3 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 128GB DDR5 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
$395.00
4d Low
$395.00
4d High
$395.00
4d Avg
$395.00
Speed Ranking
Top 75%
4800MHz ranks in the top 75% of all DDR5 speeds tracked (1,188 modules).
Specifications
Memory TypeDDR generation (DDR4 vs DDR5) · guide | DDR5 |
CapacityTotal kit memory size · guide | 128GB |
| Kit Config | ⚠ Single stick — runs in single-channel mode. Buy 2× for dual-channel performance. |
SpeedFrequency in MT/s or MHz · guide | 4800MHz |
Form FactorDIMM (Desktop) vs SO-DIMM (Laptop) | RDIMM |
ECCError-correcting capability · guide | Yes |
VoltageOperating voltage level | 1.1V |
ASIN | B0D2LZKK41 |
Spotted a wrong price or spec? Report a data correction · How we verify data
Compatible Platforms
Always verify with your motherboard's QVL before purchasing.
DDR5 Price by Capacity
Average $/GB across all DDR5 modules in the database
| Capacity | Avg $/GB |
|---|---|
| 8GB | $17.28/GB |
| 16GB | $18.93/GB |
| 32GB | $17.28/GB |
| 64GB | $13.71/GB |
| 128GBThis product | $3.27/GB |
Also available from Samsung
Same brand, different configurations
Samsung
PUSKILL 32GB DDR5 RAM (2x16GB) 6000MHz CL30 Desktop Memory | Ultra-Low Latency Gaming PC Upgrade | Intel XMP 3.0 & AMD EXPO Ready for 700/600 & Ryzen 7000 (AM5)
Samsung
PUSKILL 32GB DDR5 RAM (2x16GB) 4800MHz CL38 Desktop Memory Kit | High-Performance PC Upgrade for Gaming & Multitasking | Intel & AMD Ryzen 7000 (AM5) Compatible
Samsung
Samsung M323R2GA3BB0-CQK 16GB DDR5-4800 PC5-38400 4800MHz UDIMM Non-ECC UNBUFFERED Desktop RAM Memory Module
Related pages
Frequently Asked Questions
Is the Samsung 128GB 4800MHz DDR5 compatible with my motherboard?
This module is compatible with AMD Threadripper 7000 (TRX50), AMD Threadripper PRO 7000 (sWRX9). Always verify with your motherboard's QVL (Qualified Vendor List) before purchasing, as compatibility can vary by board revision.
Is this DDR5 module a good deal right now?
At $3.09/GB, this module is 70% below the overall DDR5 market average $/GB across all capacities. Deal score: 92/100. Check the price history chart above to see how the price has moved recently. Prices are updated daily from Amazon.
What is 4800MHz 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 Samsung RAM compare to other brands?
Samsung has 133 modules tracked with an average customer rating of 4.6★. This specific module is 70% below the overall DDR5 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?
A single 128GB stick runs in single-channel mode, using only one memory channel. A 2×64GB kit of the same total capacity runs in dual-channel mode, doubling memory bandwidth and improving real-world performance by 10–30%. For best performance, always buy RAM in matched pairs.
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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.