Apple iMac "Core i5" 3.1 21.5" (4K, Late 2015) Specs
Identifiers: Retina 4K, Late 2015 - MK452LL/A - iMac16,2 - A1418 - 2833
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The iMac "Core i5" 3.1 21.5-Inch Aluminum (Retina 4K, Late 2015/Broadwell) features a 14-nm "Broadwell" Quad Core 3.1 GHz Intel "Core i5" processor (5675R) with four independent processor "cores" on a single chip, a 4 MB shared level 3 cache, 8 GB of onboard 1867 MHz LPDDR3 SDRAM (which could be upgraded to 16 GB at the time of order, but cannot be upgraded after system purchase at all), a 1 TB (5400 RPM) hard drive, and an "integrated" Intel Iris Pro 6200 graphics processor that shares system memory. It also has a built-in "FaceTime HD" webcam and stereo speakers.
This model has a 21.5" 4096x2304 LED-backlit 16:9 widescreen IPS DCI-P3 "Retina 4K" display (that runs "pixel doubled" to look like 2048x1152). The rear of the case is aluminum and is thicker in the middle and tapers to a razor thin 5 mm at the edges.
Connectivity includes four USB 3.0 ports, dual Thunderbolt 2 ports, Gigabit Ethernet, 802.11ac Wi-Fi (802.11a/b/g/n compatible), and Bluetooth 4.0.
Compared to its predecessor, this model essentially has the same external enclosure, but it has a vastly higher quality and higher resolution "Retina" display as well as a more advanced architecture and graphics architecture.
The "Late 2015" iMac models shipped with a compact aluminum Apple Magic Keyboard and the choice of either a multi-touch "Magic Mouse 2" or a traditional wired Apple mouse. For an additional US$50, one also could upgrade from the Magic Mouse 2 to the "Magic Trackpad 2," which provides multi-touch and pressure-sensitive "Force Touch" capabilities.
Also see:
- What are all the differences between the "Late 2015" Aluminum iMac models?
- What are all of the differences between the "Late 2015" Aluminum iMac models and the models replaced?
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| Introduction Date: |
October 13, 2015 |
Discontinued Date: |
June 5, 2017 |
| Details: |
The "Introduction Date" refers to the date a model was introduced via press release. The "Discontinued Date" refers to the date a model either was replaced by a subsequent system or production otherwise ended.
Also see: All Macs introduced in 2015. |
| Processors: |
1 (4 Cores) |
Architecture: |
64-Bit |
| Geekbench 2 (32): |
10555 |
Geekbench 2 (64): |
12423 |
| Details: |
Geekbench 2 benchmarks are in 32-bit and 64-bit modes, respectively. These numbers reflect an average of user provided 32-bit and 64-bit results as submitted to the Geekbench website. Higher numbers are better.
You also might be interested in reviewing all 32-bit and 64-bit Geekbench 2 user submissions for Macs with the iMac16,2 Model Identifier, which may include multiple models.
To dynamically compare Geekbench 2 results from different Macs side-by-side, see EveryMac.com's Ultimate Mac Comparison. |
| Geekbench 3 (32): |
3403 |
Geekbench 3 (32): |
11417 |
| Details: |
These Geekbench 3 benchmarks are in 32-bit mode and are for a single processor core and all processor cores, respectively. Both numbers reflect an average of user provided results as submitted to the Geekbench website. Higher numbers are better.
You also might be interested in reviewing all 32-bit single core and multicore Geekbench 3 user submissions for Macs with the iMac16,2 Model Identifier, which may include multiple models.
To dynamically compare 32-bit Geekbench 3 results from different Macs side-by-side, see EveryMac.com's Ultimate Mac Comparison. |
| Geekbench 3 (64): |
3744 |
Geekbench 3 (64): |
12611 |
| Details: |
These Geekbench 3 benchmarks are in 64-bit mode and are for a single processor core and all processor cores, respectively. Both numbers reflect an average of user provided results as submitted to the Geekbench website. Higher numbers are better.
You also might be interested in reviewing all 64-bit single core and multicore Geekbench 3 user submissions for Macs with the iMac16,2 Model Identifier, which may include multiple models.
To dynamically compare 64-bit Geekbench 3 results from different Macs side-by-side, see EveryMac.com's Ultimate Mac Comparison. |
| Geekbench 4 (SC): |
4201 |
Geekbench 4 (MC): |
12383 |
| Details: |
These Geekbench 4 benchmarks are are for a single processor core and all processor cores, respectively. All Geekbench 4 benchmarks are 64-bit. Both numbers reflect an average of user provided results as submitted to the Geekbench website. Higher numbers are better.
You also might be interested in reviewing all single core and multicore Geekbench 4 user submissions for Macs with the iMac16,2 Model Identifier, which may include multiple models.
To dynamically compare Geekbench 4 results from different Macs side-by-side, see EveryMac.com's Ultimate Mac Comparison. |
| Geekbench 5 (SC): |
914 |
Geekbench 5 (MC): |
3105 |
| Details: |
These Geekbench 5 benchmarks are are for a single processor core and all processor cores, respectively. All Geekbench 5 benchmarks for the Mac are 64-bit. Both numbers reflect an average of user provided results as submitted to the Geekbench website. Higher numbers are better.
You also might be interested in reviewing all single core and multicore Geekbench 5 user submissions for Macs with the iMac16,2 Model Identifier, which may include multiple models.
To dynamically compare Geekbench 5 results from different Macs side-by-side, see EveryMac.com's Ultimate Mac Comparison. |
| Processor Speed: |
3.1 GHz |
Processor Type: |
Core i5 (I5-5675R) |
| Details: |
This model is powered by a 14 nm, 64-bit "Fifth Generation" Intel Core i5 "Broadwell" (I5-5675R) processor which includes four independent processor "cores" on a single silicon chip. Each core has a dedicated 256k level 2 cache, shares 4 MB of level 3 cache, and has an integrated memory controller (dual channel).
This system also supports "Turbo Boost 2.0" -- which "automatically increases the speed of the active cores" to improve performance when needed (up to 3.6 GHz for this model) -- and "Hyper Threading" -- which enables four hardware processor cores and four "threads" for software multitasking.
Also see: How much faster are the "Late 2015" iMac models than the models replaced? |
| Turbo Boost: |
3.6 GHz |
Custom Speeds: |
N/A |
| Details: |
This model additionally could be configured with a 3.3 GHz Quad Core "Core i7" processor (I7-5775R) for an extra US$200. This "Core i7" processor supports Hyper-Threading (it has two threads per core for a total of eight threads for the system) as well as Turbo Boost 2.0 (the system can dynamically increase the processor clockspeed to 3.8 GHz when tasks demand). It has a larger 6 MB level 3 cache, too.
As requested by readers, EveryMac.com also has documented this custom configuration as its own model. |
| Processor Upgrade: |
Soldered* |
FPU: |
Integrated |
| Details: |
*Officially, Apple provides no information about whether or not the processor in this model can be upgraded. However, the processor in this model is soldered to the motherboard and cannot be upgraded.
Also see: Is it possible to upgrade the processor in the "Tapered Edge" Aluminum iMac models? |
| System Bus Speed: |
5 GT/s* |
Cache Bus Speed: |
3.1 GHz (Built-in) |
| Details: |
*This system has a "Direct Media Interface" -- specifically DMI2 -- that "connects between the processor and chipset" in lieu of a traditional system bus. Intel reports that it runs at 5 GT/s. |
| ROM/Firmware Type: |
EFI |
EFI Architecture: |
64-Bit |
| L1 Cache: |
32k/32k |
L2/L3 Cache: |
256k x4, 4 MB (on chip) |
| Details: |
Each core has its own dedicated 256k level 2 cache and the system has 4 MB of shared level 3 cache. |
| RAM Type: |
LPDDR3 SDRAM* |
Min. RAM Speed: |
1867 MHz |
| Details: |
*Shipped standard with 8 GB of 1867 MHz "Low Power" LPDDR3 SDRAM onboard. |
| Standard RAM: |
8 GB |
Maximum RAM: |
16 GB* |
| Motherboard RAM: |
8 GB |
RAM Slots: |
None |
| Details: |
There are no RAM slots. 8 GB of RAM is onboard by default. It can be upgraded to 16 GB, but only at the time of system purchase. It cannot be upgraded after system purchase at all. |
| Video Card: |
Iris Pro 6200 |
VRAM Type: |
Integrated |
| Details: |
This model has an Intel Iris Pro 6200 graphics processor that shares memory with the system.
Which "Tapered Edge" iMac have video processors with dedicated memory? Which have integrated memory? |
| Standard VRAM: |
1.7 GB |
Maximum VRAM: |
1.7 GB |
| Details: |
The Intel Iris Pro 6200 graphics processor reserves up to 1.7 GB of system memory for video function. |
| Built-in Display: |
21.5" 16:9 Widescreen |
Native Resolution: |
4096x2304 |
| Details: |
This model has a 21.5" LED-backlit 16:9 widescreen TFT active matrix "Retina 4K" display with IPS technology, a native resolution of 4096x2304, and an expanded DCI-P3 color gamut. By default, it runs "pixel doubled" at 2048x1152, but also can run at scaled resolutions of 2304x1296 and 1560x1440.
In the UK, site sponsor ALB Repair offers component-level logic board repair, display repair, and other repair services for this iMac. No fix, no fee!
In Spain, site sponsor iRepairs provides affordable repair and data recovery services. In-person and by mail repair services include the display, graphics card, motherboard, power supply, and more for this iMac.
In Hong Kong, site sponsor iCertified provides well-reviewed repair services for the display, logic board, water damage, and more, all with a 180-day warranty; free diagnostics and estimates; and optional pickup and delivery for this iMac. |
| 2nd Display Support: |
Dual/Mirroring* |
2nd Max. Resolution: |
4096x2304 |
| Details: |
*This model can simultaneously support the internal display at full native resolution and up to 4096x2304 on an external display in both extended desktop (second workspace) and video mirroring (internal display duplicated on the external display) modes. |
| Standard Storage: |
1 TB HDD |
Std. Storage Speed: |
5400 RPM |
| Details: |
*This model has a Serial ATA (6 Gb/s) connector for a 2.5" hard drive. If configured with a "Fusion" Drive or an SSD at the initial time of system purchase, it also has a PCIe connector (PCIe 2.0 x4 NVMexpress interface), but this connector is not present if the system only is configured with a hard drive at the time of purchase.
At the time of purchase, Apple offered a 1 TB "Fusion Drive" (which combines a 24 GB SSD and a 1 TB hard drive) for an extra US$100, a 2 TB "Fusion Drive" (which combines a 128 GB SSD and a 2 TB hard drive) for an extra US$300, a 256 GB SSD for an extra US$200, or a 512 GB SSD for an extra US$500.
Also see: How do you upgrade the hard drive in the "Tapered Edge" Aluminum iMac models? What type of storage do they support? Is it even possible to upgrade these models?
In the US (and many other countries), site sponsor Other World Computing sells storage upgrades for this iMac.
In the UK, site sponsor Flexx sells storage upgrades for this iMac.
In Australia, site sponsor Upgradeable sells storage upgrades for this iMac.
Also see: SSD Compatibility Guide for All G3 & Later Macs. |
| Storage Dimensions: |
2.5" (7 mm)* |
Storage Interface: |
Serial ATA (6 Gb/s)* |
| Details: |
*This model has a SATA III (6 Gb/s) connector for a 2.5" hard drive or SSD. If the system is configured with an SSD or a "Fusion Drive" at the time of initial purchase, it also has a dedicated PCIe connection. If it was not configured with an SSD or a "Fusion Drive" initially, the PCIe connector is not present and it is not possible to install a second drive later. |
| Standard Optical: |
None* |
Standard Disk: |
None |
| Details: |
*This iMac does not have an internal optical drive. Site sponsor Adorama offers the external Apple USB SuperDrive for US$79. It writes DVD+R DL and DVD-R DL at 4X, DVD-R and DVD+R at 8X, DVD-RW at 6X, DVD+RW at 8X, reads DVD at 8X, writes CD-R at 24X, writes CD-RW at 16X, and reads CD at 24X.
Site sponsor Other World Computing also has a variety of compact external optical drive options that may be of interest, including some with Blu-ray capability.
Also see: What are the full capabilities of the external SuperDrive? Can it be used with other Macs? |
| Standard Modem: |
None |
Standard Ethernet: |
10/100/1000Base-T |
| Standard AirPort: |
802.11ac* |
Standard Bluetooth: |
4.0 |
| Details: |
*802.11ac Wi-Fi (802.11a/b/g/n backwards compatible) and Bluetooth 4.0 standard. |
| USB Ports: |
4 (3.0) |
Firewire Ports: |
None |
| Details: |
Four USB 3.0 ports. |
| Expansion Slots: |
SDXC SD Card |
Expansion Bays: |
None |
| Details: |
In the US (and many other countries), site sponsor Other World Computing sells a wide variety of external expansion options and hand-picked accessories like external storage, stands, keyboards, cables, adapters, speakers, and more for this iMac. |
| Incl. Keyboard: |
Apple Magic Keyboard |
Incl. Input: |
Magic Mouse 2* |
| Details: |
*This model shipped with a small aluminum wireless compact keyboard (without a numeric keypad) with a rechargeable battery. By default, it also shipped with the wireless "Magic Mouse 2" with multi-touch surface support although this could be substituted with a traditional Wired Apple Mouse at no extra charge. For an extra US$50, one could change the Magic Mouse 2 for an also wireless "Magic Trackpad 2" that provides multi-touch input and Force Touch (which provides different options depending on the pressure and duration of a touch or press). For an additional US$129, one could have both a Magic Mouse 2 and a Magic Trackpad 2. |
| Case Type: |
All-in-One |
Form Factor: |
21.5" iMac Late 2012 |
| Details: |
The 21.5-Inch "Retina 4K, Late 2015" Aluminum iMac models use a case design that is effectively identical to the "Late 2012," "Late 2013" and "Mid-2014" models, but both the display and internals are different. Each of these lines have a glass front laminated directly to the LCD and an aluminum back that is thicker in the middle and tapers to a razor thin 5 mm edge. The entire system sits upon an aluminum "foot" that is 6.9 inches (17.5 cm) deep. |
| Apple Order No: |
MK452LL/A |
Apple Subfamily: |
Retina 4K, Late 2015 |
| Details: |
The Apple order number should be unique to this system. |
| Apple Model No: |
A1418 (EMC 2833) |
Model ID: |
iMac16,2 |
| Details: |
Please note that these identifiers refer to more than one model.
Also see: All Macs with the A1418 Model Number, the 2833 EMC Number, and the iMac16,2 Model Identifier.
For more about these identifiers and how to locate them on each Mac, please refer to EveryMac.com's Mac Identification section. |
| Battery Type: |
N/A |
Battery Life: |
N/A |
| Pre-Installed MacOS: |
X 10.11 (15A2301) |
Maximum MacOS: |
12.x (Monterey)* |
| Details: |
*This system fully supports the last version of OS X 10.11 "El Capitan" including Metal graphics acceleration. It is fully supported by the last version of macOS Sierra (10.12) and macOS High Sierra (10.13), also. Running macOS High Sierra (10.13) or later, it supports HEVC (High-Efficiency Video Coding), but it does not support hardware accelerated HEVC.
This model is compatible with the final version of macOS Mojave (10.14), macOS Catalina (10.15), and macOS Big Sur (macOS 11), as well. It additionally supports the final version macOS Monterey (macOS 12), but it does not support Universal Control or AirPlay to Mac and the more minor Spatial Audio, Portrait Mode, 3D Landmarks, and Interactive Globe features. It does not support macOS Ventura (macOS 13) or later.
Also see: Which Macs are compatible with macOS Monterey (macOS 12)? What are the system requirements? What are the major new features? Do all features work with all supported Macs? |
| Minimum Windows: |
10 (64-Bit)* |
Maximum Windows: |
10 (64-Bit)* |
| Details: |
*The pre-installed version of Apple's Boot Camp 6 supports the 64-bit version of Windows 10. Earlier versions of Windows are not supported. |
| MacOS 9 Support: |
None |
Windows Support: |
Boot/Virtualization |
| Details: |
Also see: Are there any third-party programs to run Mac OS 9/Classic applications on Intel Macs?
For more on running Windows on Intel Macs, please refer to the exhaustive Windows on Mac Q&A. |
| Dimensions: |
17.7 x 20.8 x 6.9 |
Avg. Weight: |
12.5 lbs. (5.68 kg) |
| Details: |
In inches - height by width by depth, (45.0 cm, 52.8 cm, 17.5 cm). |
| Original Price (US): |
US$1499 |
Est. Current Retail: |
US$250-US$400 |
| Details: |
Photo Credit: Apple Computer. |
Global original prices for the iMac "Core i5" 3.1 21.5" (4K, Late 2015) in 34 different countries and territories follow; organized alphabetically by region.
For global original prices for Intel Macs in one particular country on a single page, please refer to EveryMac.com's Global Original Prices section.
Original Prices - North & South America
| Canada: |
C$1899 |
Brazil: |
R$14.299 |
| Mexico: |
MXN $30,999 |
United States: |
US$1499 |
Original Prices - Europe
| Austria: |
€1699 |
Belgium: |
€1729 |
| Denmark: |
DKK 12,999 |
Finland: |
€1749 |
| France: |
€1699 |
Germany: |
€1699 |
| Ireland: |
€1749 |
Italy: |
€1729 |
| Luxembourg: |
€1671,85 |
Netherlands: |
€1729 |
| Norway: |
NOK 16.990 |
Portugal: |
€1749 |
| Spain: |
€1729 |
Sweden: |
SEK 16.495 |
| Switzerland: |
CHF 1'699 |
United Kingdom: |
£1199 |
Original Prices - Asia
| China: |
RMB 10,988 |
Hong Kong: |
HK$11,488 |
| India: |
Rs 123,900 |
Indonesia: |
N/A |
| Japan: |
¥172,800 |
Korea: |
KRW 2,090,000 |
| Malaysia: |
RM 6,899 |
The Philippines: |
PHP 77,990 |
| Singapore: |
S$2,288 |
Taiwan: |
NT$51,900 |
| Thailand: |
THB 56,900 |
Vietnam: |
VND 36,880,000 |
Original Prices - Australia & New Zealand
| Australia: |
A$2299 |
New Zealand: |
NZ$2799 |
If you have additional original prices for this model, please get in touch. Thank you.
Ten of the most popular Q&As about the iMac models follow.
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2 (Thunderbolt 2) 
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4 (3.0)
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1 (RJ-45)
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2 (Built-in)
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1
1
1
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