OWC
OWC 128GB (2x64GB) DDR5 4800 PC5-38400 CL40 2Rx4 288-pin 1.1V ECC Registered RDIMM Memory RAM Compatible with ThinkSystem SD650 V3 SD650-I V3 SD665 V3 SD665-N V3 SR630 V3
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
65/100
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: B0CLYZTSQR) 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
- No customer reviews available yet on Amazon
- 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 (2x64) 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
Specifications
Memory TypeDDR generation (DDR4 vs DDR5) · guide | DDR5 |
CapacityTotal kit memory size · guide | 128GB (2x64) |
| Kit Config | ✓ 2× kit — dual-channel ready |
CAS LatencyClock cycles response delay · guide | CL40 |
Form FactorDIMM (Desktop) vs SO-DIMM (Laptop) | RDIMM |
ECCError-correcting capability · guide | Yes |
ASIN | B0CLYZTSQR |
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 OWC
Same brand, different configurations
OWC
OWC 16GB DDR5 4800 PC5-38400 CL40 1Rx8 288-pin 1.1V ECC Registered RDIMM Memory RAM Module Upgrade Compatible with Dell Precision Workstation 5860 5860XL 7960 7960XL Towers and 7960 Rack
OWC
OWC 64GB (2x32GB) DDR5 4800 PC5-38400 CL40 2Rx8 288-pin 1.1V ECC Registered RDIMM Memory RAM Compatible with Dell Precision Workstation 5860 5860XL 7960 7960XL Towers and 7960 Rack
OWC
OWC 64GB (2x32GB) DDR5 4800 PC5-38400 CL40 2Rx8 288-pin 1.1V ECC Unbuffered UDIMM Memory RAM Module Upgrade Kit for Select Workstations or Servers
Related pages
Frequently Asked Questions
Is the OWC 128GB (2x64) 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. Check the price history chart above to see how the price has moved recently. Prices are updated daily from Amazon.
What is DDR5 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 OWC RAM compare to other brands?
OWC has 89 modules tracked with an average customer rating of 4.4★. This specific module is 70% below the overall DDR5 market average $/GB. Browse all OWC 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 2×64GB 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 DDR5 RAM
Corsair
CORSAIR Vengeance DDR5 RAM 128GB (2x64GB) 6400MHz CL42-52-52-104 1.35V Intel XMP 3.0 Desktop Computer Memory – Black (CMK128GX5M2B6400C42)
G.Skill
Flare X5 Series DDR5 RAM (AMD EXPO & Intel XMP 3.0) 128GB (2x64GB) 6000MT/s CL34-44-44-96 1.35V Desktop Computer Memory U-DIMM - Matte Black (F5-6000J3444F64GX2-FX5)
Crucial
Crucial Pro 128GB Kit (2x64GB) DDR5 RAM, 5600MHz (or 5200MHz or 4800MHz) Desktop Gaming Memory UDIMM, Compatible with Latest Intel & AMD CPU CP2K64G56C46U5
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.