HDD to SSD Replacement in iMac 27 Retina 5K (2019)

Yes, replacing the HDD with an SSD in a 2019 27-inch Retina 5K iMac is quite possible to do yourself with the right tools and adapters. For this model, a special adapter is required as the system uses both a SATA port for the HDD and a proprietary SSD blade form factor. SATA SSDs with good heat dissipation are recommended, such as the Samsung 870 EVO or Crucial MX500, which provide stable operation without overheating.

Contents

• Possibility of self-replacement
• Required adapters and connectors
• Recommended 512GB SSD models
• Installation process and important notes
• Tips for selection and installation

Possibility of self-replacement

Yes, replacing the hard drive with an SSD in a 2019 27-inch Retina 5K iMac (model A2115) is quite feasible without going to a service center. According to information from iFixit, the process requires care but is quite manageable for technically savvy users.

It’s important to note that the 2019 iMac has two storage slots:

• SATA port for 3.5" HDD or 2.5" SSD
• Proprietary SSD blade for the main drive

Some users on Reddit confirm that after studying guides and preparing tools, the replacement goes successfully. However, the process requires separating the display and moving the speakers, which requires caution.

Important: According to Apple Community, installing a SATA/SSD is significantly easier than replacing an NVMe PCIe blade, so this option is recommended for beginners.

Required adapters and connectors

For replacing the HDD with an SSD in the 2019 iMac, you’ll need the right adapter depending on the type of drive being installed:

For replacing HDD (SATA)

• SATA cable - for connecting 2.5" or 3.5" SSD/HDD
• Mounting brackets for securing the drive
• Thermal paste (if required)

As noted on iFixit, SATA drives require a corresponding cable that can be purchased separately.

For replacing SSD blade (NVMe)

• 12+16 pin adapter for converting M.2 NVMe to Apple SSD format
• M.2 NVMe SSD in 2280 format

According to Reddit, some A2115 models have BGA NAND SSD without a socket for the proprietary Apple SSD, so it’s important to determine your configuration in advance.

Compatible adapters

• NGFF M.2 NVMe SSD Convert Adapter for MacBook/iMac
• OWC SSD Upgrade Kit for iMac 2012-2019
• StarTech M.2 NGFF SSD to 2.5in SATA Adapter Converter

As noted on eshop.macsales.com, the best solutions provide “Plug and play Apple SMC and diagnostic compatibility” without the need for software hacks.

Recommended 512GB SSD models

For installation in the 2019 27-inch Retina 5K iMac, it’s recommended to choose SSDs with good heat dissipation and reliability. Here are proven models:

SATA SSD (most recommended)

1. Samsung 870 EVO 512GB

   • Excellent price-to-performance ratio
   • Good cooling and reliability
   • TRIM support for macOS

2. Crucial MX500 512GB

   • High reliability according to the manufacturer
   • Optimal thermal regulation
   • Good compatibility with macOS

3. WD Blue 3D NAND 512GB

   • Stable operation over a long period
   • Low power consumption
   • Good thermomechanics

NVMe SSD (only with adapter)

1. Samsung 980 PRO 512GB

   • High performance
   • Requires a quality adapter
   • May require additional cooling

2. Crucial P5 Plus 512GB

   • Good compatibility with macOS
   • Optimal price-to-performance ratio
   • Reliable thermal regulation

Important: As warned by Apple Community, when choosing an NVMe SSD, it’s important to note that not all models work well with macOS and may require additional cooling measures.

Installation process and important notes

Preparation for installation

1. Turn off the iMac and disconnect all cables
2. Prepare tools: screwdrivers, plastic cards, thermal paste
3. Check compatibility of the chosen SSD with your model
4. Create a backup of all data before replacement

Step-by-step installation (SATA SSD)

1. Separate the display from the case according to the iFixit guide
2. Disconnect the speaker and carefully set it aside
3. Disconnect the SATA cable from the HDD
4. Install the new SSD in the bracket
5. Connect the SATA cable to the new SSD
6. Reassemble the iMac in reverse order

Important notes

• Cooling: Ensure the new SSD doesn’t block ventilation holes
• Compatibility: Verify that the chosen SSD model is compatible with macOS
• Warranty: Self-installation may void Apple’s warranty
• Difficulty: According to iFixit, “new ‘Thin Series’ systems are much harder to open and you can easily damage the display”

Tips for selection and installation

Choosing an SSD

1. Prioritize reliability over maximum speed
2. Check user reviews for specific models
3. Consider the warranty period from the manufacturer
4. Prefer SATA SSDs over NVMe for beginners

Installation

1. Watch video tutorials from OWC before starting
2. Work slowly and carefully
3. Use anti-static wrist strap and tools
4. Test the system before final assembly

Alternative solutions

If self-installation seems too complicated, consider:

• External Thunderbolt 3 drives for additional storage
• Contacting an authorized service for guaranteed results
• Professional upgrade companies like OWC, specializing in iMacs

As noted by everymac.com, “upgrading storage in an iMac can significantly improve system performance with relatively small costs.”

Conclusion

Replacing the HDD with an SSD in a 2019 27-inch Retina 5K iMac is quite a feasible task for technically savvy users. For optimal results, it’s recommended to choose a SATA SSD with good heat dissipation (Samsung 870 EVO or Crucial MX500) and use the right adapter. The process requires care and preparation, but will significantly improve system performance. If you lack experience, it’s better to consult professionals or consider external storage solutions.

Sources

1. iFixit - iMac Intel 27" Retina 5K Display 2019 Hard Drive Replacement
2. OWC - Upgrade/Install a PCIe SSD in a 27-Inch iMac (2019)
3. Apple Community - Upgrading IMac 2019 27" Retina to M2 PCIe
4. Reddit - Best Hard Drive replacement for a 2019 27" iMac
5. iFixit - iMac Intel 27" Retina 5K Display Hard Drive Replacement
6. Amazon - Willhom Hard Drive Data Combo SSD HDD Sata Cable Replacement
7. MacRumors Forums - Upgrading iMac Retina 5K, 27-inch, 2019 - SSD
8. iFixit - HDD Upgrade/Replacement with SSD
9. iFixit - SSD Blade & 2.5" SSD Upgrade Question
10. iFixit - iMac 27" A2115 (2019) Power Supply & Storage Upgrade Advice
11. EveryMac - How to Upgrade iMac Hard Drive or SSD 2012-2022
12. Apple Community - iMac 2019 A2115 SSD compatibility
13. iFixit - iMac Intel 27" A1419/A2115 (Late 2012-2019) SSD Upgrade Kit
14. OWC DIY Drive Upgrade/Install Kits for Apple iMac Models
15. Reddit - 2019 iMac 27" SSD Upgrade