--- product_id: 250539275 title: "16.0GB 2666MHz DDR4 PC4-21300 SO-DIMM 260 Pin Memory Upgrade, (OWC2666DDR4S16G), For 2019-2020 27 inch iMac (iMac19,1 iMac20,1 iMac20,2)" brand: "owc" price: "$395.97" currency: USD in_stock: true reviews_count: 7 category: "Owc" url: https://www.desertcart.us/products/250539275-16-0gb-2666mhz-ddr4-pc4-21300-so-dimm-260-pin store_origin: US region: United States of America --- # 2666MHz blazing speed 16GB high-capacity RAM 1.2V energy-efficient power 16.0GB 2666MHz DDR4 PC4-21300 SO-DIMM 260 Pin Memory Upgrade, (OWC2666DDR4S16G), For 2019-2020 27 inch iMac (iMac19,1 iMac20,1 iMac20,2) **Brand:** owc **Price:** $395.97 **Availability:** ✅ In Stock ## Summary > 🚀 Elevate your iMac’s brainpower—because speed waits for no one! ## Quick Answers - **What is this?** 16.0GB 2666MHz DDR4 PC4-21300 SO-DIMM 260 Pin Memory Upgrade, (OWC2666DDR4S16G), For 2019-2020 27 inch iMac (iMac19,1 iMac20,1 iMac20,2) by owc - **How much does it cost?** $395.97 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/250539275-16-0gb-2666mhz-ddr4-pc4-21300-so-dimm-260-pin) ## Best For - owc enthusiasts ## Why This Product - Trusted owc brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Effortless DIY Upgrade:** Lightweight, RoHS certified, and supported by online installation videos—upgrade your iMac like a pro. - • **Lifetime Peace of Mind:** Backed by OWC’s Lifetime Limited Warranty and Advanced Replacement Program—tech support included. - • **Energy-Smart Efficiency:** Runs at a low 1.2V voltage to keep your system cool and power consumption minimal. - • **Turbocharge Your iMac Performance:** Upgrade to 16GB DDR4 SO-DIMM for seamless multitasking and lightning-fast responsiveness. - • **Tailored for 2019-2020 27-inch iMacs:** Perfectly compatible with iMac19,1, iMac20,1, and iMac20,2 models—no guesswork, just plug & play. ## Overview The OWC 16GB 2666MHz DDR4 SO-DIMM memory module is a premium, energy-efficient upgrade designed specifically for 2019-2020 27-inch iMac models. With 16GB capacity, 260-pin form factor, and 1.2V operation, it delivers faster data transfer and enhanced multitasking. Backed by a lifetime warranty and expert support, this lightweight, RoHS-certified RAM ensures a hassle-free, high-performance upgrade experience. ## Description Buy OWC 16.0GB 2666MHz DDR4 PC4-21300 SO-DIMM 260 Pin Memory Upgrade, (OWC2666DDR4S16G), For 2019-2020 27 inch iMac (iMac19,1 iMac20,1 iMac20,2) online on desertcart.ae at best prices. ✓ Fast and free shipping ✓ free returns ✓ cash on delivery available on eligible purchase. Review: just perfect - i upgrade my imac by myself easy and its compatible . since 1 year right now Review: Good - Perfect ## Features - 16 GB (1 x 16GB) PC4-21300 DDR4, 206-pin, SO-DIMM, 1.2V, RoHS Certified, warranty safe memory upgrade - Memory Upgrade Compatible with 2018 Mac mini: Mac mini (Late 2018) (November, 2018) Model ID: Macmini8,1 (3.6GHz i3, 3.0GHz i5, 3.2GHz i7) - Memory Upgrade Compatible with 2019 iMac: iMac w/Retina 5K display (27-inch Early 2019) Model ID: iMac19,1 (3.0GHz i5, 3.1GHz i5, 3.7GHz i5, 3.6GHz i9) - Memory Upgrade Compatible with 2020 iMac: iMac w/Retina 5K display (27 inch mid 2020) Model ID: iMac20,1 and iMac20,2 (3.1GHz i5, 3.3GHz i5, 3.8GHz i7, 3.6GHz i9) - Free technical support from our expert technicians, online installation videos available, Every module is backed by OWC Memory Lifetime Limited Warranty including the OWC Lifetime Advanced Replacement Program ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07NJV1JRT | | Additional Features | Lightweight | | Best Sellers Rank | #67,994 in Computers ( See Top 100 in Computers ) #541 in Computer Memory | | Brand | OWC | | Column Address Strobe Latency | CL18 | | Compatible Devices | Desktop | | Compatible devices | Desktop | | Computer memory size | 16 GB | | Customer Reviews | 4.5 out of 5 stars 3,885 Reviews | | Data Transfer Rate | 2666 MHz | | Form Factor | SO-DIMM | | Manufacturer | Other World Computing | | Memory Speed | 1333 MHz | | Memory speed | 1333 MHz | | Model Name | OWC2666DDR4S16G | | Number of Pins | 260 | | RAM Memory Technology | DDR4 | | RAM Size | 16 GB | | Ram memory technology | DDR4 | | Special features | Lightweight | | UPC | 810586031349 | | Unit Count | 1.0 Count | | Voltage | 1.2 Volts | ## Product Details - **Brand:** OWC - **Computer memory size:** 16 GB - **Ram memory technology:** DDR4 - **Memory speed:** 1333 MHz - **Compatible devices:** Laptop ## Images ![16.0GB 2666MHz DDR4 PC4-21300 SO-DIMM 260 Pin Memory Upgrade, (OWC2666DDR4S16G), For 2019-2020 27 inch iMac (iMac19,1 iMac20,1 iMac20,2) - Image 1](https://m.media-amazon.com/images/I/61KLrkMplDL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ just perfect *by M***. on 15 November 2021* i upgrade my imac by myself easy and its compatible . since 1 year right now ### ⭐⭐⭐⭐⭐ Good *by M***. on 15 January 2023* Perfect ### ⭐⭐⭐⭐⭐ This or crucial? went for this and I'm happy *by N***L on 30 January 2021* Imac 2019 worthwhile upgrade, no pain in buying apple RAM ## Frequently Bought Together - OWC 16GB PC21300 DDR4 2666MHz 260pin SO-DIMM Memory Ram Module Compatible with Mac mini 2018, iMac 2019 and up, and Compatible PCs (OWC2666DDR4S16G) TAA Compliant - LeFix Replacement Display Adhesive Tape Kit+Opening Cut Wheel Tool Kit for iMac (Retina 4K, 21.5-inch, 2019)| iMac (21.5-inch, 2017)| iMac (Retina 4K, 21.5-inch, 2017)-A2116 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/250539275-16-0gb-2666mhz-ddr4-pc4-21300-so-dimm-260-pin](https://www.desertcart.us/products/250539275-16-0gb-2666mhz-ddr4-pc4-21300-so-dimm-260-pin) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-06*