OWC 32GB (2x16GB) DDR4 2666MHz PC4-21300 CL19 2RX8 ECC Unbuffered UDIMM 1.2V 288-pin Workstation Server Memory RAM
Bottom line: The OWC 32GB (2x16GB) DDR4 2666MHz PC4-21300 CL19 2RX8 ECC Unbuffered is a specs-and-price decision rather than a crowd-consensus one in the memory & ram category. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.
As an Amazon Associate, SpecPicks earns from qualifying purchases. Full disclosure →
Pros & Cons
Pros
- ✓ Backed by OWC's warranty and support channels
Cons
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, shipping and returns are set by the retailer and may have changed since this page was last updated
SpecPicks Verdict
SpecPicks scored OWC 32GB (2x16GB) DDR4 2666MHz PC4-21300 CL19 2RX8 ECC Unbuffered… using a rating × review-volume × price-fit model applied to published specs and reviews across the memory & ram category. OWC's memory & ram lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for memory & ram of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Key Features
- OWC 32GB UPGRADE: Consists of 2pcs of 16GB DDR4 2666MHz PC4-21300 CL19 2RX8 ECC Unbuffered DIMM 1.2V 288-pin Memory Modules
- 100% COMPLIANT: With JEDEC Standard Specifications, ROHS Compliant, Warranty Safe Upgrade. Designed and Tested to Meet or Exceed all Manufacturer OEM Specs
- INCREASED PERFORMANCE: Memory Upgrades are the Most Effective and Easy Way to Boost your PC's Performance
- INDUSTRY LEADING: Consumer Friendly Advanced Replacement Program and Limited Lifetime Warranty, which Includes Free Tech Support by Other World Computing
- Works with Desktop, Workstation and Servers like: PowerEdge, Precision, StoreEasy, ProLiant, Apollo, ThinkServer, ThinkStation, ThinkSystem, System X and more
Full Specifications
| Brand | OWC |
|---|---|
| Voltage | 1.2 Volts |
| RAM Size | 32 GB |
| Unit Count | 2.0 Count |
| Form Factor | DIMM |
| Memory Speed | 2666 MHz |
| Model Number | OWC2U6D42R8032P |
| Compatibility | PC |
| 100% COMPLIANT | With JEDEC Standard Specifications, ROHS Compliant, Warranty Safe Upgrade. Designed and Tested to Meet or Exceed all Manufacturer OEM Specs |
| Number of Pins | 288 |
| Mfr Part Number | OWC2U6D42R8032P |
| INDUSTRY LEADING | Consumer Friendly Advanced Replacement Program and Limited Lifetime Warranty, which Includes Free Tech Support by Other World Computing |
| OWC 32GB UPGRADE | Consists of 2pcs of 16GB DDR4 2666MHz PC4-21300 CL19 2RX8 ECC Unbuffered DIMM 1.2V 288-pin Memory Modules |
| Memory Generation | DDR4 |
| Compatible Devices | Desktop, Server |
| Data Transfer Rate | 2666 MHz |
| Memory Form Factor | UDIMM |
| Additional Features | Lightweight |
| Computer Memory Size | 32 GB |
| Warranty Description | OWC Memory Lifetime Limited Warranty including Advanced Replacement Program |
Ready to buy?
OWC 32GB (2x16GB) DDR4 2666MHz PC4-21300 CL19 2RX8 ECC Unbuffered UDIMM 1.2V 288-pin Workstation Server Memory RAM is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
Related Memory & RAM
More guides & deep dives from the SpecPicks archive
Browse all articles & guides →- RTX 4070 Super vs RX 7800 XT — Which to Buy in 2026
- Best Budget Gaming PC Build 2026 — ~$1,000 ($800 on Sale)
- The Complete Voodoo5 5500 AGP Driver Guide (2026 Edition)
- Best Retro Handhelds in 2026 — From $35 to $500
- Best 1440p Gaming GPUs in 2026
- Emulation Hardware in 2026: FPGA, Software, and Cart-Reader Ecosystems
- How to Build a Windows 98 Retro PC in 2026
More reviews from the SpecPicks archive
Browse all reviews →- Asus ProArt PA27USD 27-Inch OLED Review: Color Meets Gaming Speed
- GLM-5.2 Is Now the Most Intelligent Open-Weights Model — and the Most Verbose
- Build a Silent Raspberry Pi 5 NAS with NVMe and Active Cooling in 2026
- 4K@60fps USB Video Capture on Linux: What Works in 2026
- Raspberry Pi Zero W vs Pi 4 for a 2026 Cyberdeck: Which Board Fits?
- 4K Gaming PC Build 2026: Cost, Parts, FPS
- First-Time CPU Delidding: What to Expect and How to Get It Right
- Best Gaming Headset Under $50 for Console + PC (2026)
- Best Budget Gaming Peripherals Under $100 in 2026
- Sony to End Physical PlayStation Disc Production by 2028: What It Means for Retro Collectors
- VibeThinker-3B on an RTX 3060 12GB: Reasoning in 3 Billion Params
- AMD Ryzen AI HALO vs RTX 3060 12GB for Local LLMs in 2026
- Use a Raspberry Pi 4 as a Second Monitor or KVM in 2026
- CompactFlash Boot Drive for Windows 98 Retro PC: The 2026 Transcend CF133 Recipe
- Ryzen 5 2600 vs Ryzen 5 5600G for CPU-Only Llama 3.2 3B in 2026
- AMD Ryzen AI Halo vs NVIDIA DGX Spark: Local-AI Mini-Box Showdown
- Pi Pico Puts Bluetooth Keyboards on the I2C Bus
- Raspberry Pi 4 8GB vs Pi Zero W: Which Fits Your First Project?
- Intel Arc Pro B70 + llm-scaler-vllm 1.4: Is It the New Budget Inference King?
- Sega Genesis Mini vs SNES Classic Edition: Which Mini Console Wins in 2026?
- GeForce FX 5900 Ultra vs Radeon 9800 Pro: The 2003 DirectX 9 Showdown Revisited
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 5080
- Ryzen 7 5700X vs 5800X for 1080p & 1440p Gaming in 2026
- Best Raspberry Pi Starter Kit for Beginners in 2026
Earliest SpecPicks reviews
Browse full archive →- Best GPU for Llama 3.1 8B (2026)
- Best GPU for Qwen 3 14B (2026)
- Best GPU for Qwen 3 32B (2026)
- Best GPU for Llama 3.1 70B (2026)
- Best GPU for DeepSeek-R1 32B (2026)
- Best GPU for Llama 3.1 405B (2026)
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 14B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 70B on NVIDIA GeForce RTX 5090
- How to run DeepSeek-R1 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 4090