--- product_id: 178886933 title: "16.0GB 2666MHz DDR4 PC4-21300 SO-DIMM 260 Pin Memory Upgrade, (OWC2666DDR4S16G), for 2018 Mac mini (macmini18,1), Early 2019 27 inch iMac (iMac19,1) and PC laptops" brand: "owc" price: "$252.41" currency: USD in_stock: true reviews_count: 6 category: "Owc" url: https://www.desertcart.us/products/178886933-16-0gb-2666mhz-ddr4-pc4-21300-so-dimm-260-pin store_origin: US region: United States of America --- # 16GB DDR4 high-capacity boost 1.2V energy-efficient design 2666MHz blazing fast speed 16.0GB 2666MHz DDR4 PC4-21300 SO-DIMM 260 Pin Memory Upgrade, (OWC2666DDR4S16G), for 2018 Mac mini (macmini18,1), Early 2019 27 inch iMac (iMac19,1) and PC laptops **Brand:** owc **Price:** $252.41 **Availability:** ✅ In Stock ## Summary > ⚡ Upgrade your Mac & PC with speed and power that means business! ## Quick Answers - **What is this?** 16.0GB 2666MHz DDR4 PC4-21300 SO-DIMM 260 Pin Memory Upgrade, (OWC2666DDR4S16G), for 2018 Mac mini (macmini18,1), Early 2019 27 inch iMac (iMac19,1) and PC laptops by owc - **How much does it cost?** $252.41 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/178886933-16-0gb-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 - • **Energy Smart:** Runs at a low 1.2V voltage to keep your system cool and efficient all day long. - • **Speed That Keeps Up:** 2666MHz frequency ensures smooth, lag-free performance for demanding apps. - • **Peace of Mind Warranty:** Backed by OWC’s Lifetime Limited Warranty and Advanced Replacement Program. - • **Seamless Compatibility:** Perfectly engineered for 2018 Mac mini, 2019 27-inch iMac, and compatible PC laptops. - • **Power Your Productivity:** 16GB DDR4 SO-DIMM memory to handle multitasking like a pro. ## Overview The OWC 16.0GB 2666MHz DDR4 SO-DIMM memory module is a premium, energy-efficient RAM upgrade designed for 2018 Mac mini, 2019 27-inch iMac, and compatible PC laptops. With 16GB capacity, 2666MHz speed, and 1.2V operation, it delivers a significant performance boost for multitasking and demanding workflows, backed by OWC’s lifetime warranty and expert support. ## Description Product Description Review: Increased the speed of imac early 2019 model - Very happy with the product. It did increase the speed of imac significantly. Earlier I had 2 ram of 4 gb each and wanted to add two sticks of 8 gb each. Inserted the new ram sticks in the empty slots. However, the computer wont start. Did everything to restart but nothing worked. Then i swapped the slots - the new rams in original slots and the old ram in empty slots. The computer still did not start. Then I removed the original ram and put the new ones in the original slots. The computer started and is now working perfectly fine. Guess, the combination does not work. Happy with 16 gb ram. Review: Classic one ! - My model is 3.0 GHZ,2019 imac27 inch base model ,it can be extended up to 32GB,I have bought a set of 8 gb ram and works perfectly no issues ## Features - 16 GB 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 PC Laptops: Compatible with Intel / AMD Process based PCs capable with the specifications listed above. Memory complies with JEDEC Specifications - 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 | | Best Sellers Rank | #414,172 in Electronics ( See Top 100 in Electronics ) #889 in Memory | | Brand | OWC | | Brand Name | OWC | | Column Address Strobe Latency | CL18 | | Compatible Devices | Laptop | | Computer Memory Size | 16 GB | | Customer Reviews | 4.4 out of 5 stars 1,822 Reviews | | Form Factor | SO-DIMM | | Importer Contact Information | CDM Digital Distributions Pvt. Ltd., First Floor, 32-A, Flat No. B-2 Gali No. 5, Molarband Extn. Badarpur South Delhi, Delhi 110044, 8744090999 | | Item Type Name | 16.0GB 2666MHz DDR4 SO-DIMM PC4-21300 SO-DIMM 260 Pin Memory Upgrade | | Manufacturer | OWC, 8 Galaxy Way woodstock, IL 60098, Other World Computing | | Manufacturer Contact Information | OWC, 8 Galaxy Way woodstock, IL 60098 | | Memory Speed | 1333 MHz | | Model Name | OWC2666DDR4S16G | | Number Of Pins | 260 | | Packer Contact Information | CDM Digital Distributions Pvt. Ltd., First Floor, 32-A, Flat No. B-2 Gali No. 5, Molarband Extn. Badarpur South Delhi, Delhi 110044, 8744090999 | | ProcessorSpeed | 2666 MHz | | Product Features | Lightweight | | RAM Memory Technology | DDR4 | | RAM Size | 16 GB | | Special Feature | Lightweight | | UPC | 810586031349 | | Voltage | 1.2 Volts | | Warranty Description | 3 year manufacturer | ## Product Details - **Brand:** OWC - **Compatible Devices:** Laptop - **Computer Memory Size:** 16 GB - **Memory Speed:** 1333 MHz - **RAM Memory Technology:** DDR4 ## Images ![16.0GB 2666MHz DDR4 PC4-21300 SO-DIMM 260 Pin Memory Upgrade, (OWC2666DDR4S16G), for 2018 Mac mini (macmini18,1), Early 2019 27 inch iMac (iMac19,1) and PC laptops - Image 1](https://m.media-amazon.com/images/I/61KLrkMplDL.jpg) ![16.0GB 2666MHz DDR4 PC4-21300 SO-DIMM 260 Pin Memory Upgrade, (OWC2666DDR4S16G), for 2018 Mac mini (macmini18,1), Early 2019 27 inch iMac (iMac19,1) and PC laptops - Image 2](https://m.media-amazon.com/images/I/51EaPBtJaLL.jpg) ![16.0GB 2666MHz DDR4 PC4-21300 SO-DIMM 260 Pin Memory Upgrade, (OWC2666DDR4S16G), for 2018 Mac mini (macmini18,1), Early 2019 27 inch iMac (iMac19,1) and PC laptops - Image 3](https://m.media-amazon.com/images/I/71kL+Vk-d9L.jpg) ![16.0GB 2666MHz DDR4 PC4-21300 SO-DIMM 260 Pin Memory Upgrade, (OWC2666DDR4S16G), for 2018 Mac mini (macmini18,1), Early 2019 27 inch iMac (iMac19,1) and PC laptops - Image 4](https://m.media-amazon.com/images/I/61tAPiYMO5L.jpg) ![16.0GB 2666MHz DDR4 PC4-21300 SO-DIMM 260 Pin Memory Upgrade, (OWC2666DDR4S16G), for 2018 Mac mini (macmini18,1), Early 2019 27 inch iMac (iMac19,1) and PC laptops - Image 5](https://m.media-amazon.com/images/I/61CMcerWZZL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Increased the speed of imac early 2019 model *by S***Y on 8 January 2023* Very happy with the product. It did increase the speed of imac significantly. Earlier I had 2 ram of 4 gb each and wanted to add two sticks of 8 gb each. Inserted the new ram sticks in the empty slots. However, the computer wont start. Did everything to restart but nothing worked. Then i swapped the slots - the new rams in original slots and the old ram in empty slots. The computer still did not start. Then I removed the original ram and put the new ones in the original slots. The computer started and is now working perfectly fine. Guess, the combination does not work. Happy with 16 gb ram. ### ⭐⭐⭐⭐⭐ Classic one ! *by M***E on 10 July 2021* My model is 3.0 GHZ,2019 imac27 inch base model ,it can be extended up to 32GB,I have bought a set of 8 gb ram and works perfectly no issues ### ⭐⭐⭐⭐⭐ Best Budget Ram available for iMac 2019 *by R***D on 30 July 2022* My iMac 2019 is running way more smoother than it was before definitely I will recommend you all. ## 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/178886933-16-0gb-2666mhz-ddr4-pc4-21300-so-dimm-260-pin](https://www.desertcart.us/products/178886933-16-0gb-2666mhz-ddr4-pc4-21300-so-dimm-260-pin) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-20*