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Apple iMac 21.5-inch Retina 4K, Late 2015 (MK452)

Apple iMac 21.5-inch Retina 4K, Late 2015 (MK452)
alaScore 96

326 reviews

May, 2017

alaTest has collected and analyzed 326 reviews of Apple iMac 21.5-inch Retina 4K, Late 2015 (MK452). The average rating for this product is 4.7/5, compared to an average rating of 4.1/5 for other Desktops for all reviews. Opinions about the reliability and size are overall positive. The price and design are also appreciated.

usability, design, price, size, reliability

We analyzed user and expert ratings, product age and more factors. Compared to other Desktops the Apple iMac 21.5-inch Retina 4K, Late 2015 (MK452) is awarded an overall alaScore™ of 96/100 = Excellent quality.

Review analysis

(Based on 326 reviews)

Expert Reviews  

User Reviews  

Showing 297 review(s)

Expert Reviews User Reviews

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Showing 1 - 29 of 297 Show Reviews: in English | in other languages (29)

Consumer review by: (amazon.com)

Amazon.com review summary for Apple iMac 21.5-inch Retina 4K, Late 2015 (MK452)

 

alaTest has collected and analyzed 19 user reviews of Apple iMac 21.5-inch Retina 4K, Late 2015 (MK452) from Amazon.com. The average user rating for this product is 4.1/5, compared to an average user rating of 4.0/5 for other Desktops on Amazon.com. People really like the design, but the usability and reliability get less positive opinions. Opinions are divided on the size.

design

price, reliability, usability

79% of the reviews on Amazon.com give this product a positive rating.

This summary is based on the products: Apple iMac MK452LL/A 21.5-Inch Retina 4K Desktop (NEWEST VERSION)Apple iMac MK452LL/A 21.5-Inch Retina 4K Desktop (NEWEST VERSION)

May, 2017

Expert review by: Stuart Miles (pocket-lint.com)

Apple 21.5-inch iMac with Retina 4K display review: All about the ultra-high definition

 

A new iMac range is here to woo you into staying with the desktop in 2015 rather than going mobile.

4K screen resolution in top-end model looks great, new keyboard, faster performance than predecessor

Slow 5,400rpm hard drive as standard, mouse uncomfortable to use, no post-purchase RAM upgrades, Fusion Drive limits flash to 24GB (down from 128GB)

If you are still wanting to be bound to the desk and go Apple then the iMac is certainly the way to do it. Going Retina is certainly worth the extra cash with this 21.5-inch model - delivering ultra high-definition 4K without breaking the bank.

Nov, 2015

Expert review by: Mark Peters (letsgodigital.org)

Apple iMac with 4K and 5K Retina Displays

 

New iMac comes with stunning Retina Display : Apple updated the entire iMac family, bringing a breathtaking new Retina 4K display to the 21.5-inch iMac for the first time and the Retina 5K display to every 27-inch iMac. The new Retina displays make...

The all-new Magic Keyboard, Magic Mouse 2 and Magic Trackpad 2 are more comfortable, capable and environmentally friendly. Designed around a built-in rechargeable lithium-ion battery, all three accessories eliminate the need for disposable batteries...

Oct, 2015

Expert review by: Sasha Muller (alphr.com)

Apple iMac 21-inch review (late-2015)

 

Apple updates its smaller-sized iMac with a Retina 4K screen, and it's a compact all-in-one to be reckoned with

“Whichever of these you choose, however, the iMac has a positively prehistoric 1TB 5,400rpm HDD.”

Feb, 2016

Expert review by: Cliff Joseph (zdnet.com)

Apple 21.5-inch iMac with Retina 4K Display (2015) review: Display dazzles, but options are fewer

 

The 4K display might be something of a luxury for business users who simply want to run Microsoft Office, but the latest top-end 21.5-inch iMac will be an attractive option for users who need a fast and versatile desktop computer.

Bright, colourful 4K display ; Broadwell update provides strong processor performance ; Slimline, all-in-one design

Slow hard drive ; No longer includes discrete GPU ; Limited upgrade options

Nov, 2015

Expert review by: (cnet.com)

Apple iMac with 4K Retina display 21.5-inch, 2015

 

The flagship device in Apple's just-updated late-2015 iMac line is the configuration reviewed here, stepping up to a gorgeous 21.5-inch 4K resolution display and starting at $1,499 in the US (£1,199 or AU$2,099). Two other base models, at $1,099 and...

Apple upgrades the 21.5-inch iMac with a stunning 4K-resolution display, along with faster processors and Thunderbolt 2. The redesigned keyboard, mouse and trackpad all have rechargeable batteries and lightning connectors.

The new processors are still one generation behind Intel's latest and there are no discrete graphics options. No HDMI input means it can't double as a TV monitor.

The smallest Apple iMac trades up to a 4K display, and jumps to newer, but still not the latest, processors. While the design hasn't changed, newly crafted accessories with rechargeable batteries and Lightning connectors add flair and convenience.

Oct, 2015

Expert review by: Dan Ackerman (cnet.com.au)

Apple iMac with 4K Retina display review: Apple packs more pixels into its smallest iMac

 

Last year's addition to the 21.5-inch Apple iMac line caught our attention by cutting the starting price to $1,099 (£899 or AU$1,349) and positioning itself as essentially a MacBook Air recast as a desktop system; the new version for 2015 aims higher.

Apple upgrades the 21.5-inch iMac with a stunning 4K-resolution display, along with faster processors and Thunderbolt 2. The redesigned keyboard, mouse and trackpad all have rechargeable batteries and lightning connectors

The new processors are still one generation behind Intel's latest and there are no discrete graphics options. No HDMI input means it can't double as a TV monitor

The smallest Apple iMac trades up to a 4K display, and jumps to newer, but still not the latest, processors. While the design hasn't changed, newly crafted accessories with rechargeable batteries and Lightning connectors add flair and convenience.

Oct, 2015

Expert review by: Jason Snell (macworld.com)

iMac with 4K Retina display review: A high-resolution desktop Mac for the masses

 

The Mac is a small fraction of Apple's total business, and of that, roughly three-quarters of the Macs sold are laptops. Apple could probably be forgiven if it put the entire iMac line into maintenance mode: after all, sometimes it seems like that's...

Gorgeous Retina screen ; Thunderbolt 2 support

Fast flash-storage available as an option ; Hampered by slow 5200 rpm hard drive ; Discrete GPU available only as configuration option ; Uses previous generation Intel chipset

The 5K iMac is an incredible computer, one of the best Macs ever made—but it’s also just too much for many people. A 27-inch display can dominate a desk or a room, and though the price tag has come down a lot in the past year, it’s still on the pricey...

Oct, 2015

Consumer review by: Sooty65 (johnlewis.com)

Satisfied

 

Purchased to replace defunct Microsoft desk top. Taking a little time to get used to different operating systems but the speed is impressive,and the screen is superb.

Jan, 2017

Consumer review by: Holtender29 (johnlewis.com)

great product

 

this was my first imac having used windows for over 30 years. Its taking a while to get used to but i,m getting there. All the instruction is on line and it would have been useful if a basic instruction book was included. I purchased one myself as I...

Jan, 2017

Consumer review by: Harbo30 (johnlewis.com)

Incredible

 

First time to buy Apple Mac can't believe how great this experience is everybody says it's difficult to pick up but after an hour it was so simple Also the service from JL was first class thanks for a great product and service

Jan, 2017

Product Specifications

Audio

Built-In Microphone:Y / Yes
Built-in speaker(s):Y / Yes

Certificates

Energy Star certified:Y / Yes
EPEAT compliance:Bronze / Gold

Design

Cable lock slot:N / Y / Yes
Cable lock slot type:Kensington
Colour of product:Silver
Housing material:Aluminium
Wall mountable:Y / Yes

Display

3D:N / No
Aspect Ratio:1.77:1 / 16:9
Detachable display:N / No / Y / Yes
Display diagonal:53.3 / 54.6
Display Resolution:4096 x 2304
Full HD:Y / Yes
HD type:4K Ultra HD
LED Backlight:Y / Yes
Panel Type:IPS
Screen shape:Flat
Touchscreen:N / No

Graphics

Discrete graphics adapter:N
Discrete graphics adapter model:Not available
Maximum on-board graphics adapter memory:1.7 / 1.74
Number of displays supported (on-board graphics):3
On-board graphics adapter:N / Y
On-board graphics adapter base frequency:300
On-board graphics adapter DirectX version:11.2 / 11.2/12
On-board graphics adapter dynamic frequency (max):1100 / 1150
On-board graphics adapter family:Intel Iris Pro Graphics
On-board graphics adapter ID:0x1622
On-board graphics adapter model:Intel Iris Pro Graphics 6200 / Intel® Iris™ Pro Graphics 6200
On-board graphics adapter OpenGL version:4.3

Memory

Internal Memory:16 / 8
Internal memory type:LPDDR3-SDRAM
Maximum internal memory:16 / 8
Memory clock speed:1867
Memory form factor:DIMM/SO-DIMM / On-board
Memory layout (slots x size):1 x 8 / 2 x 4 / 2 x 8
Memory slots:2
Memory slots type:SO-DIMM

Multimedia

Built-in Camera:No / Y / Yes
TV tuner integrated:N

Networking

Bluetooth:Y / Yes
Bluetooth version:4.0
Ethernet LAN:Y / Yes
Ethernet LAN data rates:10,100,1000
Wi-Fi:Y / Yes
Wi-Fi standards:802.11a, 802.11ac, 802.11b, 802.11g, 802.11n / 802.11a,802.11ac,802.11b,802.11g,802.11n / IEEE 802.11a, IEEE 802.11ac, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n / IEEE 802.11a, IEEE 802.11ac, IEEE 802.11g, IEEE 802.11n / IEEE 802.11a,IEEE 802.11ac,IEEE 802.11b,IEEE 802.11g,IEEE 802.11n

Operational conditions

Operating altitude:0 - 3000
Operating relative humidity (H-H):5 - 95
Operating temperature (T-T):10 - 35

Optical Drive

Optical Drive Type:N / No

Other features

Storage drive interface:SATA

Packaging Content

Bundled software:- iPhoto\n- iMovie\n- GarageBand\n- Pages\n- Numbers\n- Keynote\n- iBooks\n- Safari\n- FaceTime\n- Time Machine\n- Photo Booth\n- iTunes\n- Game Center / - Photos\n- iMovie\n- GarageBand\n- Pages\n- Numbers\n- Keynote\n- Safari\n- Mail\n- Messages\n- FaceTime\n- Calendar\n- Notes\n- App Store\n- iTunes\n- iBooks\n- Maps\n- Contacts\n- Reminders / Fotos\niMovie\nGarageBand\nPages\nNumbers\nKeynote\nSafari\nMail\nFaceTime\nMac App Store\niTunes\niBooks / iMovie\nGarageBand\nSafari\nFaceTime\nApp Store\niTunes\niBooks / iPhoto\niMovie\nGarageBand\nPages\nNumbers\nKeynote\niBooks\nSafari\nFaceTime\nTime Machine\nPhoto Booth\niTunes\nGame Center / iPhoto\nMovie\nGarageBand\nPages\nNumbers\nKeynote\niBooks\nSafari\nFaceTime\nTime Machine\nPhoto Booth\niTunes\nGame Center
Cables included:Lightning
Keyboard supplied:Y / Yes
Mouse included:N / Y / Yes
Power cord included:N / Y / Yes
Trackpad included:Y / Yes
Warranty card:Y / Yes

Performance

Product Type:All-in-One PC / PC

Ports & interfaces

Combo headphone/mic port:Y / Yes
DC-in jack:Y
DVI port:N / No
Ethernet LAN (RJ-45) ports:1
Headphone outputs:1
Microphone in:N
Mini DisplayPort/Thunderbolt combo port:Y / Yes
Thunderbolt 2 ports quantity:2
USB 3.0 (3.1 Gen 1) Type-A ports quantity:4

Power

AC adapter frequency:50/60
AC adapter input voltage:100 - 240
Autonomy mode:N / No / Y

Processor

Bus type:DMI2
Conflict Free processor:Y
ECC supported by processor:N
Integrated 4G WiMAX:N
Maximum internal memory supported by processor:32
Maximum number of PCI Express lanes:16
Memory bandwidth supported by processor (max):29.86
Memory channels supported by processor:Dual
Memory clock speeds supported by processor:1333,1600,1866 / 1866,1333,1600
Memory types supported by processor:DDR3L-SDRAM
Memory voltage supported by processor:1.5
PCI Express configurations:1x16,1x8+2x4,2x8 / 2x8, 1x8+2x4, 1x16
PCI Express slots version:3.0
Processor boost frequency:3.6 / 3.8
Processor cache:4 / 6
Processor cache type:L3
Processor code:SR2AJ / SR2AL
Processor codename:Broadwell
Processor Cores:4
Processor family:5th gen Intel® Core™ i5 / 5th gen Intel® Core™ i7 / Intel Core i5-5xxx / Intel Core i5-xxx / Intel Core i7-5xxx / Intel Core i7-xxx
Processor frequency:3.1 / 3.3
Processor lithography:14
Processor Model:I5-5675R / I7-5775R
Processor operating modes:32-bit, 64-bit / 64-bit
Processor Socket:BGA1364
Processor threads:4 / 8
Stepping:G0
System bus rate:5
Thermal Design Power (TDP):65

Processor special features

CPU configuration (max):1
Embedded options available:N
Enhanced Intel SpeedStep Technology:Y
Execute Disable Bit:Y
Graphics & IMC lithography:14
Idle States:Y
Intel 64:Y / Yes
Intel Clear Video Technology:Y
Intel Enhanced Halt State:Y
Intel FDI Technology:Y
Intel Iris Pro Graphics: Yes
Intel Secure Key Technology version:1.00
Intel Small Business Advantage (SBA) version:0.00
Intel Stable Image Platform Program (SIPP):N
Intel Stable Image Platform Program (SIPP) version:0.00
Intel Trusted Execution Technology:N
Intel TSX-NI:Y
Intel TSX-NI version:1.00
Intel Turbo Boost Technology: Yes
Intel Virtualization Technology (VT-x):Y
Intel Virtualization Technology for Directed I/O (VT-d):Y
Intel VT-x with Extended Page Tables (EPT):Y
Intel® AES New Instructions (Intel® AES-NI):Y
Intel® Anti-Theft Technology (Intel® AT):Y
Intel® Clear Video HD Technology (Intel® CVT HD):Y
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID):Y
Intel® Hyper Threading Technology (Intel® HT Technology):Y
Intel® Insider™:Y
Intel® InTru™ 3D Technology:Y
Intel® Iris Pro Graphics:Y / Yes
Intel® OS Guard:Y
Intel® Quick Sync Video Technology:Y
Intel® Secure Key:Y
Intel® Small Business Advantage (Intel® SBA):N
Intel® Smart Cache:Y
Intel® Turbo Boost Technology:2.0 / Y / Yes
Intel® vPro™ Technology:N
Intel® Wireless Display (Intel® WiDi):Y
InTru™ 3D Technology:Y
Processor ARK ID:87715 / 87718
Processor code:SR2AJ
Processor package size:37.5
Scalability:1S
Supported instruction sets:SSE4.1, AVX 2.0, SSE4.2 / SSE4.1,SSE4.2,AVX 2.0
Thermal Monitoring Technologies:Y
Thermal solution specification:PCG 2013D

Software

Operating system installed:Mac OS X 10.11 El Capitan / macOS Sierra 10.12
Operating System Language:English / French / German

Storage

Card reader integrated:Y / Yes
Compatible memory cards:SDXC
Hard Drive Capacity:1000
Hard Drive Interface:SATA / Serial ATA
Hard drive speed:5400
Number of Hard Drives Installed:1
Number of SSDs installed:1
Number of storage drives installed:1
Solid-state drive capacity:256 / 512
Storage Media:Flash / Fusion Drive / HDD / SSD
Total Storage Capacity:1000 / 2000 / 256 / 512

Weight & Dimensions

Depth:17.5 / 175
Depth (without stand):6.6
Height :45 / 450
Height (without stand):37.9
Weight:5.68
Width:52.8 / 528
Width (without stand):52.8