--- product_id: 121986965 title: "OWC Memory 128GB (4X 32GB) DDR4 PC4-21300 2666MHz RAM" brand: "owc" price: "R37983" currency: ZAR in_stock: true category: "Owc" url: https://www.desertcart.co.za/products/121986965-owc-memory-128gb-4x-32gb-ddr4-pc4-21300-2666mhz-ram store_origin: ZA region: South Africa --- # 2666MHz blazing speed 128GB total capacity Lifetime warranty & advanced replacement OWC Memory 128GB (4X 32GB) DDR4 PC4-21300 2666MHz RAM **Brand:** owc **Price:** R37983 **Availability:** ✅ In Stock ## Summary > 🚀 Upgrade your workflow — because your iMac deserves the best! ## Quick Answers - **What is this?** OWC Memory 128GB (4X 32GB) DDR4 PC4-21300 2666MHz RAM by owc - **How much does it cost?** R37983 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/121986965-owc-memory-128gb-4x-32gb-ddr4-pc4-21300-2666mhz-ram) ## 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 - • **Massive 128GB Capacity:** Unleash unparalleled performance with four 32GB modules, perfect for power users, creatives, and managers who demand peak efficiency. - • **Plug & Play Compatibility:** Effortlessly upgrade your 27-inch iMac (2019 & 2020 Retina 5K) or compatible desktops and laptops from top brands like Dell, HP, Lenovo, and more. - • **Blazing 2666MHz DDR4 Speed:** Turbocharge your iMac or PC with lightning-fast memory bandwidth for seamless multitasking and heavy workloads. - • **Energy-Efficient 1.2V Operation:** Keep your system cool and power consumption low without sacrificing performance — ideal for long work sessions and sustainability-minded pros. - • **Rock-Solid Reliability & Support:** Backed by OWC’s Lifetime Limited Warranty and Advanced Replacement Program, plus free expert tech support to keep you ahead of the curve. ## Overview The OWC 128GB DDR4 PC4-21300 RAM kit includes four 32GB SO-DIMM modules running at 2666MHz with CL19 latency, designed for 27-inch Retina 5K iMacs (2019 & 2020) and a wide range of compatible PCs and laptops. Operating at an energy-efficient 1.2V, this memory upgrade offers massive capacity and speed, backed by a lifetime warranty and advanced replacement program, ensuring professional-grade reliability and performance for demanding multitasking and creative workflows. ## Description Buy OWC Memory 128GB (4X 32GB) DDR4 PC4-21300 2666MHz RAM | 288-Pin Compatible with 27 iMac w/Retina 5K (Early 2019 and up) and Compatible PCs: Memory - desertcart.com ✓ FREE DELIVERY possible on eligible purchases ## Features - OWC 256.0GB UPGRADE: Consists of Four 32GB DDR4 2666MHz PC4-21300 CL19 SO-DIMMs 1.2V 260-pin Memory Module Fully compliant with JEDEC specifications, ROHS compliant, warranty safe upgrade; Backed by OWC Memory Lifetime Limited Warranty including the OWC Lifetime Advanced Replacement Program - 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) - 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) Models: MRQY2LL/A, MRR02LL/A, MRR12LL/A - PC COMPATIBLE WITH: works with compatible gaming laptops and PC desktops: Dell, HP , Toshiba, ASUS, Acer, Supermicro, Fujitsu, Gigabyte, Intel, Lenovo, LG, Samsung, Sony, Supermicro - COMPATIBLE PART NUMBERS: CT2K32G4S266M, CT32G4S266M, KCP426SD8/32, CT32G4SFD8266, HMAA4GS6AJR8N-VK, M471A4G43MB1‐CTD, MUQQ2G/A - INDUSTRY LEADING: Consumer Friendly Advanced Replacement Program and Limited Lifetime Warranty, which Includes Free Tech Support by Other World Computing ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07QD13Y17 | | Additional Features | Lightweight | | Best Sellers Rank | #157 in Computer Memory | | Brand | OWC | | Column Address Strobe Latency | CL18 | | Compatible Devices | Desktop | | Computer Memory Size | 128 GB | | Customer Reviews | 4.4 out of 5 stars 374 Reviews | | Data Transfer Rate | 2666 MHz | | Form Factor | SO-DIMM | | Item Highlight | 288-Pin Compatible with 27 iMac w/Retina 5K (Early 2019 and up) and Compatible PCs | | Manufacturer | Other World Computing | | Memory Form Factor | SODIMM | | Memory Generation | DDR4 | | Memory Speed | 2666 MHz | | Mfr Part Number | OWC2666DR4S128S | | Model Name | OWC2666DR4S128S | | Model Number | 2666DR4S128S | | Number of Items | 4 | | Number of Packs | 4 | | Number of Pins | 206 | | RAM Memory Technology | DDR4 | | RAM Size | 128 GB | | Special Feature | Lightweight | | UPC | 810586032612 | | Unit Count | 4 count | | Voltage | 1.2 volts | | Warranty Description | OWC Memory Lifetime Limited Warranty including Advanced Replacement Program | ## Product Details - **Brand:** OWC - **Computer Memory Size:** 128 GB - **RAM Memory Technology:** DDR4 - **Memory Speed:** 1333 MHz - **Compatible Devices:** Desktop ## Images ![OWC Memory 128GB (4X 32GB) DDR4 PC4-21300 2666MHz RAM - Image 1](https://m.media-amazon.com/images/I/611Wxtwj6fL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: Will this work on the 2019 imac 3.6ghz 8-core 9th gen intel core i9?** A: I see a lot of bad info on mixing the ram. Yes you can mix it, BUT you need to put the new ram in slots 1&2 OR 3&4 if you want to keep it running at 2666mhz. Easy to confirm by just going to your System Information app, then under "Hardware" is "Memory" it will show you which slot each stick is in AND its clock speed. If you alternate like many people say, it still works, but is slowed to 2133mhz. I've tried it all 3 ways on my 2020 iMac and currently left the 16gb sticks in 3 & 4 with the original Mac 4Gb sticks in 1 & 2. **Q: Will it work on 2020 imac 27 inch retina 5k display with 3.6 ghz 10 core 10th generation intel i9 processor?** A: Hi, I have the same mac 10-core intel core i9 Did it work on you? Mine says 2667 Mhz DDR4 Is this one ok even its only 2666 Mhz? **Q: Will this memory work in the 2019 iMac w/Retina 5k?** A: Hello. This will work in the 2019 iMac model. **Q: es compatible con acer predator 17** A: Look it up on google to be sure. ## Frequently Bought Together - OWC 128GB (4 x 32GB) PC21300 DDR4 2666MHz 260pin SO-DIMMs Memory Ram Upgrade Compatible with 27" iMac w/Retina 5K (Early 2019 and up) and Compatible PCs (OWC2666DR4S128S) - 2020 Apple iMac with Retina 5K Display (27-inch, 8GB RAM, 512GB SSD Storage) --- ## 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.co.za/products/121986965-owc-memory-128gb-4x-32gb-ddr4-pc4-21300-2666mhz-ram](https://www.desertcart.co.za/products/121986965-owc-memory-128gb-4x-32gb-ddr4-pc4-21300-2666mhz-ram) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-10-10*