---
product_id: 128886076
title: "Timetec 64GB KIT(4x16GB) Compatible for Apple DDR4 2666MHz for Mid 2020 iMac (20,1/20,2) / Mid 2019 iMac (19,1) 27-inch w/Retina 5K Display PC4-21333 / PC4-21300 CL19 SODIMM Memory MAC RAM Upgrade"
brand: "timetec"
price: "$804.72"
currency: USD
in_stock: true
category: "Timetec"
url: https://www.desertcart.us/products/128886076-timetec-64gb-kit-4x16gb-compatible-for-apple-ddr4-2666mhz-mid
store_origin: US
region: United States of America
---

# 2666MHz blazing speed 64GB total capacity Lifetime warranty & free tech support Timetec 64GB KIT(4x16GB) Compatible for Apple DDR4 2666MHz for Mid 2020 iMac (20,1/20,2) / Mid 2019 iMac (19,1) 27-inch w/Retina 5K Display PC4-21333 / PC4-21300 CL19 SODIMM Memory MAC RAM Upgrade

**Brand:** timetec
**Price:** $804.72
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your iMac’s power — because your creativity deserves no limits!

## Quick Answers

- **What is this?** Timetec 64GB KIT(4x16GB) Compatible for Apple DDR4 2666MHz for Mid 2020 iMac (20,1/20,2) / Mid 2019 iMac (19,1) 27-inch w/Retina 5K Display PC4-21333 / PC4-21300 CL19 SODIMM Memory MAC RAM Upgrade by timetec
- **How much does it cost?** $804.72 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/128886076-timetec-64gb-kit-4x16gb-compatible-for-apple-ddr4-2666mhz-mid)

## Best For

- timetec enthusiasts

## Why This Product

- Trusted timetec brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Massive 64GB Memory Kit:** 4x16GB modules to power through demanding apps and creative workflows without a hitch.
- • **Energy-Efficient 1.2V Operation:** Low voltage design keeps your iMac cool and efficient during heavy workloads.
- • **Turbocharge Your iMac Performance:** Upgrade to DDR4 2666MHz for seamless multitasking and lightning-fast data transfer.
- • **Peace of Mind with Lifetime Warranty:** Invest confidently with guaranteed support and durability for years to come.
- • **Perfectly Compatible with Retina 5K iMacs:** Tailored for Mid 2019 & 2020 iMac models (19,1 / 20,1 / 20,2) ensuring plug-and-play ease.

## Overview

The Timetec 64GB DDR4 2666MHz SODIMM kit (4x16GB) is a high-performance memory upgrade designed specifically for Mid 2019 and 2020 27-inch iMacs with Retina 5K displays. Featuring a fast 2666MHz speed, low 1.2V power consumption, and a reliable CL19 latency, this kit ensures smooth multitasking and enhanced system responsiveness. Backed by a lifetime warranty and free technical support, it’s the ultimate upgrade for professionals seeking to maximize their iMac’s potential.

## Description

Buy Timetec 64GB KIT(4x16GB) Compatible for Apple DDR4 2666MHz for Mid 2020 iMac (20,1/20,2) / Mid 2019 iMac (19,1) 27-inch w/Retina 5K Display PC4-21333 / PC4-21300 CL19 SODIMM Memory MAC RAM Upgrade: Memory - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

## Features

- Compatible For Mid 2020 iMac w/ Retina 5K Display model ID: iMac 20,1 (i5 3.1GHz, i5 3.3GHz, i7 3.8GHz, i9 3.6GHz)
- Compatible For Mid 2020 iMac w/ Retina 5K Display & AMD 5700 XT Video Card model ID: iMac 20,2 (i7 3.8GHz, i9 3.6GHz)
- Compatible For Early 2019 iMac w/ Retina 5K Display model ID: iMac 19,1 (i5 3.0GHz, i5 3.1GHz, i5 3.7GHz, i9 3.6GHz)
- DDR4 2666MHz PC4-21300/ PC4-21333 Unbuffered NonParity Non-ECC 260 Pin 1.2V CL19 Dual Rank 2Rx8 based 1024x8 Module Size: 64GB Package: 4x16GB
- Wait 30 seconds for your iMac to recognize the new memory; Guaranteed – Lifetime warranty from Purchase Date Free technical support

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07RTHKVDZ |
| Additional Features | Lightweight |
| Best Sellers Rank | #256 in Computer Memory |
| Brand | Timetec |
| Column Address Strobe Latency | 19 |
| Compatible Devices | Desktop |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,392) |
| Data Transfer Rate | 2666 MHz |
| Form Factor | SO-DIMM |
| Manufacturer | Timetec |
| Memory Form Factor | SODIMM |
| Memory Generation | DDR4 |
| Memory Speed | 2666 MHz |
| Mfr Part Number | 78AP26NUS2R8-16GK4 |
| Model Name | Timetec |
| Model Number | 78AP26NUS2R8-16GK4 |
| Number of Pins | 260 |
| RAM Memory Technology | DDR4 |
| RAM Size | 64 GB |
| UPC | 765441341814 |
| Voltage | 1.2 Volts |
| Warranty Description | Lifetime |

## Product Details

- **Brand:** Timetec
- **Compatible Devices:** Desktop
- **Computer Memory Size:** 64 GB
- **Memory Speed:** 2666 MHz
- **RAM Memory Technology:** DDR4

## Images

![Timetec 64GB KIT(4x16GB) Compatible for Apple DDR4 2666MHz for Mid 2020 iMac (20,1/20,2) / Mid 2019 iMac (19,1) 27-inch w/Retina 5K Display PC4-21333 / PC4-21300 CL19 SODIMM Memory MAC RAM Upgrade - Image 1](https://m.media-amazon.com/images/I/81aQ4wbhxAL.jpg)
![Timetec 64GB KIT(4x16GB) Compatible for Apple DDR4 2666MHz for Mid 2020 iMac (20,1/20,2) / Mid 2019 iMac (19,1) 27-inch w/Retina 5K Display PC4-21333 / PC4-21300 CL19 SODIMM Memory MAC RAM Upgrade - Image 2](https://m.media-amazon.com/images/I/81TgE9ARpYL.jpg)
![Timetec 64GB KIT(4x16GB) Compatible for Apple DDR4 2666MHz for Mid 2020 iMac (20,1/20,2) / Mid 2019 iMac (19,1) 27-inch w/Retina 5K Display PC4-21333 / PC4-21300 CL19 SODIMM Memory MAC RAM Upgrade - Image 3](https://m.media-amazon.com/images/I/81abP3WMKKL.jpg)
![Timetec 64GB KIT(4x16GB) Compatible for Apple DDR4 2666MHz for Mid 2020 iMac (20,1/20,2) / Mid 2019 iMac (19,1) 27-inch w/Retina 5K Display PC4-21333 / PC4-21300 CL19 SODIMM Memory MAC RAM Upgrade - Image 4](https://m.media-amazon.com/images/I/81YLYALkc2L.jpg)
![Timetec 64GB KIT(4x16GB) Compatible for Apple DDR4 2666MHz for Mid 2020 iMac (20,1/20,2) / Mid 2019 iMac (19,1) 27-inch w/Retina 5K Display PC4-21333 / PC4-21300 CL19 SODIMM Memory MAC RAM Upgrade - Image 5](https://m.media-amazon.com/images/I/71DKDtgj5lL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: If i buy the 32gb (2-16's) leave the original 8gb in (total 48gb) in imac 2019, it will work, correct? does it matter what slots the new ram is in?**
A: With duel channel memory everything as to be symmetrical, memory slot 1 & 3, 2 & 4 needs to be the same. However the memory types, speeds etc need to be the same across all 4 slots.

I took my 8gb out and replace with 4 16gb memory sticks, I have a total of 64gb all the same and I've had zero issues, you can never have enough ram so it was cheap and the results are perfect.
A work colleague did what you want to, stuck a 16gb stick in slot 1 & 3 and the original 4gb sticks in 3 & 4. he ended up having issues were the iMac 2019 would crash. To be fair, he reached out to the company and they did replace his ram, so far so good but they have only just been replaced.

Personally I would buy 4 sticks all the same if budget allows and keep the 8gb as back up if you ever have to send it in for repairs or sell them to another 8gb user.

**Q: I have an early 2019 27" iMac Model 19, 1 - is this what I need to upgrade with?**
A: Yes, it is compatible with your iMac 27inch 5K 2019.
If you have any further questions, please feel free to contact support@timetecinc.com.
Thank you,
I.F.
Timetec Inc.

**Q: This shows pc4-21300 apple says to use pc4-21333. is this the right speed for a 2019 imac. why the difference?**
A: I have the same question. None of the third party RAM I can find says PC4-21333.

**Q: Yes installed this in my new mac mini. i now own a brick. what are my options - it will not boot up. what are my options?**
A: Try reseating the ram once more. If no go, I would try using one stick, if it doesn’t boot use the other single stick. If you can get it to boot with either one but not both you know that a module is bad and contact them for return/replacement. If you put back the original it should boot as well. Make sure you follow a guide and use safe practices like anti static wrist bands when working in the minI. If still no boot with original ram, contact apple but don’t say you swapped the ram out ^.-

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-09*