Apr 06, 2019 As initially discovered by OWC, the 2019 27-inch 5K iMac can support up to 128GB of RAM via a 4 x 32GB SO-DIMM module configuration. Hence, if you wish to upgrade your RAM, you’ll want to configure your iMac with the base 8GB amount, and buy compatible aftermarket RAM modules. Upgrade the memory of your 27-inch 2019 iMac up to 128GB. OWC memory kits are 100% Apple compatible and backed by a lifetime OWC warranty. Apr 05, 2019 How to upgrade 2019 27-inch 5K iMac RAM. Step 7: Reinstall the RAM slot cover that you removed in step 3. Step 8: Place your 5K iMac back on your desktop, reconnect all cables, and power it on. A-Tech 64GB RAM Kit for 2019 iMac (Retina 5K, 27-inch), 2018 Mac Mini - (2 x 32GB) DDR4 2666MHz PC4-21300 / PC4-21333 SODIMM Memory Upgrade Modules. 4.6 out of 5 stars 33. $289.98 $ 289. Get it as soon as Tue, Nov 19. FREE Shipping by Amazon. Only 8 left in stock - order soon. Mac Specs By Capability Actual Maximum RAM iMac Models. The actual maximum RAM of each iMac is listed below along with its compatible RAM type, default amount of RAM pre-installed, common identifiers suitable to identify a iMac in order to determine its RAM capacity, and more. 27-inch iMac with Retina 5K display. Magic Trackpad 2. Magic Keyboard with Numeric Keypad. 3.6GHz 8-core Intel Core i9 upgrade. 16GB, 32GB, or 64GB memory upgrade. 3TB Fusion Drive. 512GB, 1TB, or 2TB SSD. Radeon Pro Vega 48 with 8GB of HBM2 memory. May 25, 2019 Apple still allows iMac Retina 5K users to replace RAM (memory) on their computers, but only on the 27-inch model, not the 21.5-inch model. Here's how to replace the memory on the iMac (Retina 5K, 2019) and the parts you'll need. The latest iMac (Retina 5K) includes four memory slots and offers base RAM of 8GB (2 x 4GB DIMMs).
Learn how to identify your iMac, then find it below.
Apple Imac 27 Inch Desktop
iMac Model | Max. DRAM | User- Installable Slot | AASP- Installable Slot | Video/ VRAM | Notes |
---|---|---|---|---|---|
iMac (Retina 5K, 27-inch, 2019) | 64GB | 2666MHz DDR4 | 4GB or 8GB GDDR5 SDRAM | 5 | |
iMac (Retina 4K, 21.5-inch, 2019) | 32GB | None | 2666MHz DDR4 (for i5 processor) 2400MHz DDR4 (for i3 processor) | 2GB, 4GB, or 8GB GDDR5 SDRAM | 3 |
iMac (Retina 5K, 27-inch, 2017) | 64GB | 2400MHz DDR4 | 4GB or 8GB GDDR5 SDRAM | 5 | |
iMac (Retina 4K, 21.5-inch, 2017) | 32GB | None | 2400MHz DDR4 | 2GB or 4GB GDDR5 SDRAM | 3 |
iMac (21.5-inch, 2017) | 16GB | None | 2133MHz DDR4 | Intel Iris Plus Graphics 640 | 3 |
iMac (Retina 5K, 27-inch, Late 2015) | 32GB | 1867MHz DDR3 | 2GB or 4GB GDDR5 SDRAM | 4 | |
iMac (Retina 4K, 21.5-inch, Late 2015) | 16GB | None | Intel Iris Pro Graphics 6200 | 6 | |
iMac (21.5-inch, Late 2015) | 16GB | None | Intel Iris Pro Graphics 6000 | 6 | |
iMac (Retina 5k, 27-inch, Mid 2015) | 32GB | 1600MHz DDR3 | 2GB GDDR5 SDRAM | 4 | |
iMac (Retina 5K, 27-inch, Late 2014) | 32GB | 1600MHz DDR3 | 2GB or 4GB GDDR5 SDRAM | 4 | |
iMac (21.5-inch, Mid 2014) | 16GB | None | Intel HD Graphics 5000 | ||
iMac (27-inch, Late 2013) | 32GB | PC3-12800 (1600) DDR3 204-pin SO-DIMM | 1GB GDDR5 SDRAM, 2GB GDDR5 SDRAM and 4GB GDDR5 SDRAM | ||
iMac (21.5-inch, Late 2013) | 16GB | None | PC3-12800 (1600) DDR3 204-pin SO-DIMM | Intel HD Graphics 4000 | |
iMac (27-inch, Late 2012) | 32GB | PC3-12800 (1600) DDR3 204-pin SO-DIMM | 512MB GDDR5 SDRAM, 1GB GDDR5 SDRAM and 2GB GDDR5 SDRAM | ||
iMac (21.5-inch, Late 2012) | 16GB | None | PC3-12800 (1600) DDR3 204-pin SO-DIMM | 512MB GDDR5 SDRAM | |
iMac (27-inch, Mid 2011) | 16GB | PC3-10600 (1333) DDR3 204-pin SO-DIMM | 512MB GDDR5 SDRAM and 1GB GDDR5 SDRAM and 2GB GDDR5 SDRAM | ||
iMac (21.5-inch, Mid 2011) | 16GB | PC3-10600 (1333) DDR3 204-pin SO-DIMM | 512MB GDDR5 SDRAM | ||
iMac (27-inch, Mid 2010) | 16GB | PC3-10600 (1333) DDR3 204-pin SO-DIMM | 512MB GDDR3 SDRAM and 1GB GDDR5 SDRAM | ||
iMac (21.5-inch, Mid 2010) | 16GB | PC3-10600 (1333) DDR3 204-pin SO-DIMM | 256 MB up to 512MB GDDR3 SDRAM | ||
iMac (Late 2009) | 16GB | PC3-8500 (1066) DDR3 204-pin SO-DIMM | 256 up to 512MB GDDR3 SDRAM | ||
iMac (Mid 2009) | 4GB | PC3-8500 (1066) DDR3 204-pin SO-DIMM | 256 up to 512MB GDDR3 SDRAM | ||
iMac (Early 2009) | 8GB | PC3-8500 (1066) DDR3 204-pin SO-DIMM | 256 up to 512MB GDDR3 SDRAM | ||
iMac (Early 2008) | 4GB | PC2-6400 (800) DDR2 200-pin SO-DIMM | 128 or 256MB GDDR3 SDRAM | ||
iMac (Mid 2007) | 4GB | PC2-5300 (667) DDR2 200-pin SO-DIMM | 128 or 256MB GDDR3 SDRAM | ||
iMac (Late 2006) | 4GB | PC2-5300 (667) DDR2 200-pin SO-DIMM | 128MB GDDR3 SDRAM | 1 | |
iMac (Mid 2006) and iMac (17-inch Late 2006 CD) | 2GB | PC2-5300 (667) DDR2 200-pin SO-DIMM | 64MB GDDR3 SDRAM | ||
iMac (Early 2006) | 2GB | PC2-5300 (667) DDR2 200-pin SO-DIMM | 128MB GDDR3 SDRAM |
- Although iMac (Late 2006) accepts up to a 2GB SO-DIMM in each of its two memory slots, the computer only supports 3GB total memory.
- iMac (Late 2009), iMac (Mid 2010), and iMac (Mid 2011) have four SDRAM slots, each of which can accept a 2GB or 4GB SO-DIMM.
- These iMac models have no user-installable SDRAM slots. An Apple Authorized Service Provider (AASP) can install SDRAM in these computers.
- 27-inch iMac models introduced in 2012 through 2015 have four SDRAM slots, each of which can accept a 4GB or 8GB SO-DIMM.
- 27-inch iMac models introduced in 2017 and 2019 have four SDRAM slots, each of which can accept a 4GB, 8GB, or 16GB SO-DIMM.
- Learn more about integrated video on Intel-based Macs.
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