Learn how to identify your iMac, then find it below.
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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.
16gb Ddr3 Sodimm 1600mhz
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Learn about integrated video on Intel-based Macs
Get more information about memory and specific iMac models:
These high-performance 1.2V low-voltage DDR4 SODIMM memory from Crucial are designed for space-restricted devices such as laptops, notebook computers and 6th Gen Intel’s Next Unit of Computing (NUC) machines.
In the ever-changing world of technology, any component more than five years old is usually in need of an update. At seven years old and counting, that’s where DDR3 memory is at: laptops can only do so much with it. Since the introduction of DDR3 memory technology in 2007, processors have doubled in capability, SSDs have revolutionised throughput, and graphics cards have drastically increased frame rates, leaving memory as a limiting factor. With Crucial DDR4 SODIMMs, crush the DDR3 memory bottleneck and unlock a new standard of performance.
Features
- DDR4 specification gives performance comparable to full-size desktop memory
- All Crucial memory modules have a lifetime manufacturer warranty
- Fast 2133MHz / PC4-17000 access speed gives fantastic performance
- Low-voltage Small Outline Dual In-line Memory Module fits 6th Gen Intel NUC, laptops, etc. *
- Low-voltage Small Outline Dual In-line Memory Module fits Intel NUC, laptops, etc. †
- *DDR4 SODIMM 16GB Sng, DDR4 SODIMM 4GB Sng, DDR4 SODIMM 8GB Sng only
- †DDR4 SODIMM 16GB, DDR4 SODIMM 32GB only
More Energy Efficient
Extend battery life by using less power. Operating at just 1.2V compared to 1.5V for standard DDR3 memory, Crucial DDR4 SODIMMs consume 20% less voltage than standard DDR3 technology. Crucial DDR4 SODIMMs also contain other efficiency features, for an overall power reduction of up to 40%
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Pack more memory into your laptop than ever before. Crucial DDR4 SODIMMs debut in densities up to 4GB, and as DDR4 technology develops, modules are projected to hit 32GB — allowing you to install twice as much memory as you could in a DDR3 system. Since laptops only have 1-2 memory slots, high-density Crucial DDR4 SODIMMs allow you to overcome this limitation and install more memory for faster mobile performance.
More Speed
Two Sodimm Slots
Load applications faster and run demanding programs without lag. Crucial DDR4 SODIMMs debut at 2133 MT/s —more than 30% faster than DDR3 modules.
More Bandwidth
![Two sodimm slots Two sodimm slots](/uploads/1/2/5/2/125258956/490795586.jpg)
64gb Ddr4 Sodimm
Effortlessly multitask between apps and empower your system to fire on all cylinders. Crucial DDR4 SODIMMs increase memory bandwidth by over 30%, allowing your system to handle more data at once. Crucial DDR4 SODIMMs are optimised for next-gen platforms, allowing you to maximise bandwidth.