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Apple MacBook Retina 12-inch, Early 2015 (MF855, MF865, MJY32, MJY42, MK4M2, MK4N2, Z0QS, Z0RM, Z0RW, Z0RT, Z0RN, Z0RX)

alaTest has collected and analyzed 1580 reviews of Apple MacBook Retina 12-inch, Early 2015 (MF855, MF865, MJY32, MJY42, MK4M2, MK4N2, Z0QS, Z0RM, Z0RW, Z0RT, Z0RN, Z0RX). The average rating for this product is 4.6/5, compared to an average rating of 4.1/5 for other Laptops for all reviews. Views about the screen and design are on the whole positive. The usability and performance are also mentioned favorably, but some have doubts about the connectivity.

portability, performance, usability, design, screen


We analyzed user and expert ratings, product age and more factors. Compared to other Laptops the Apple MacBook Retina 12-inch, Early 2015 (MF855, MF865, MJY32, MJY42, MK4M2, MK4N2, Z0QS, Z0RM, Z0RW, Z0RT, Z0RN, Z0RX) is awarded an overall alaScore™ of 91/100 = Excellent quality.

See all Apple Laptop Computers

Review analysis

(Based on 1580 reviews)

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User Reviews  

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Showing 1 - 181 of 1383 Show Reviews: in English | in other languages (194)

Consumer review ( review summary for Apple MacBook Retina 12-inch, Early 2015 (MF855, MF865, MJY32, MJY42, MK4M2, MK4N2, Z0QS, Z0RM, Z0RW, Z0RT, Z0RN, Z0RX)


alaTest has collected and analyzed 35 user reviews of Apple MacBook Retina 12-inch, Early 2015 (MF855, MF865, MJY32, MJY42, MK4M2, MK4N2, Z0QS, Z0RM, Z0RW, Z0RT, Z0RN, Z0RX) from The average user rating for this product is 4.4/5, compared to an average user rating of 4.0/5 for other Laptops on Views about the usability and price are on the whole positive. The performance and design also get good opinions, but there are some less positive comments about the energy efficiency.

portability, design, performance, price, usability


86% of the reviews on give this product a positive rating.

This summary is based on the products: Apple MK4M2B/A 12-Inch MacBook Intel Core 1.1 GHz, 8 GB RAM, 256GB StorageApple MK4M2B/A 12-Inch MacBook Intel Core 1.1 GHz, 8 GB RAM, 256GB Storage

Jul, 2018

Consumer review ( review summary for Apple MacBook Retina 12-inch, Early 2015 (MF855, MF865, MJY32, MJY42, MK4M2, MK4N2, Z0QS, Z0RM, Z0RW, Z0RT, Z0RN, Z0RX)


alaTest has collected and analyzed 136 user reviews of Apple MacBook Retina 12-inch, Early 2015 (MF855, MF865, MJY32, MJY42, MK4M2, MK4N2, Z0QS, Z0RM, Z0RW, Z0RT, Z0RN, Z0RX) from The average user rating for this product is 4.3/5, compared to an average user rating of 3.9/5 for other Laptops on Opinions about the screen and usability are generally positive. The design and performance also get good comments. There are some critical reviews about the durability.

portability, performance, design, usability, screen


87% of the reviews on give this product a positive rating.

This summary is based on the products: Apple MacBook MK4M2LL/A 12-Inch Laptop with Retina Display (Gold, 256 GB)Apple MacBook MK4M2LL/A 12-Inch Laptop with Retina Display (Gold, 256 GB)

Jul, 2018

Recommended by TR

Expert review by : Andy Vandervell (

MacBook (12-inch, 2015)


Apple's new MacBook is the laptop in its most basic, stripped-back form – I called it a laptop for the iPad generation when Apple first announced it. This slight, 12-inch laptop weighs just 920g and, like the original 2008 MacBook Air, removes almost...

Elegant, fanless design ; Outstanding screen ; Surprisingly decent speakers ; Good battery life ; Awesome touchpad

Noisy keyboard ; Limited connections

May, 2015

Expert review by : Kane Fulton (

New MacBook 2015 review: is this the way all laptops should be?


Apple's new MacBook is lighter than Air

Superb battery life ; So portable ; The future of laptop design

We want more power ; More USB-C extras needed ; Can't be your main machine

A genuinely unique laptop for those seeking a Retina display in the most compact and light chassis around, the fact remains that the new MacBook’s many compromises mean it won’t suit everyone.

Jun, 2015

Expert review by : Stuart Miles (

Apple MacBook review: Is port-free the future?


With its 12-inch super glossy Retina display and ultra portability, the new Apple MacBook promises users the chance to live the future of computing not tomorrow, but today. The 12-inch MacBook is all about portability. Apple has focused on creating a...

Small size, lightweight, quality screen, Force Touch trackpad

No standard ports, no touchscreen, no TouchID

The 12-inch MacBook is all about portability. Apple has focused on creating a laptop so thin, so sleek, so light, that everything else has been pushed by the wayside.

May, 2015

Expert review by (

Apple MacBook 2015 review


Apple says it's reinvented the laptop; we just think that it's made a really, really nice one

Great everyday performance ; Terrific screen ; Amazing portability ; Big-sounding speakers ; Lovely, haptic touchpad

Lack of ports can be very frustrating ; Super-shallow keyboard ; By no means a powerhouse

The result of a singular vision for what a future laptop should be - and a lovely, desirable thing, despite the compromises

May, 2015

Expert review by : Stuart Miles (

New Apple MacBook (12-inch): Stunning, super thin and oh so bling (hands-on) - Pocket-lint


Apple has announced a new MacBook Laptop that is even thinner and smaller than the MacBook Air, but more powerful than the iPad. The new 12-inch MacBook

Mar, 2015

Expert review by : Kane Fulton (

MacBook review


Apple's rosier MacBook brings nippier performance

Gorgeous Rose Gold color ; Improved performance ; Terrific design ; Great speakers

Single USB-C port ; No price cut? ; Controversial keyboard

Apple has given the MacBook's performance a much-needed boost, and it helps OS X zip along much better. Its critical flaws remain, but the 2016 version is less of a risk than it was last year. We just wish it was a bit cheaper.

Oct, 2016

Expert review by : Dan Ackerman (

Apple MacBook (12-inch, 2015) review


The complaints started even before Apple's first new MacBook demo ended. During the March 2015 press event, observers fretted about the new, slimmer, lighter 12-inch MacBook . "It's underpowered," they said. "The battery life will be short. The new...

The new 12-inch Apple MacBook is amazingly thin and light, has a premium look and feel, and is available in three colors. It offers better battery life than other laptops with Intel's Core M processors, and performance that's as good as or better than...

Its performance and battery life falls short of the MacBook Air and Pro. The new keyboard is shallow and takes some getting used to, and sharing a single port for all accessories as well as the power cord is almost immediately frustrating.

If you can live with its limitations, the new 12-inch MacBook delivers a groundbreaking design that points the way to the next chapter in laptops.

Apr, 2015

Expert review by : Jonathan Margolis (

Apple MacBook


Why our tech guru thinks this is the most beautiful laptop ever made

Sep, 2015

Expert review by (

Apple MacBook 2015 review


Overall, this is a classic slice of Apple hegemony. its beautiful, ultra-light, and everything but the processor is tip-top quality. Needless to say the engineering is impeccable, and the price is to match. There are significant compromises made to get...

Jun, 2015

Expert review by : Matt Hill (

New MacBook 2015 review: Apple's super-light laptop dials back the power to turn on the style


A super-thin laptop for computer casuals that dials back the power to turn on the style.

Looks stunning ; Excellent screen ; Incredibly light and slim ; Great software

Divisive keyboard ; Not overly powerful ; Expensive

The new MacBook sure is a handsome device but it is also the point where Apple's portable computing lines have converged so much that the differences are no longer as clearly defined, leading to a more personal, subjective choice to make. Some will...

Jun, 2015

Product Specifications


Built-In Microphone:Y / Yes
Number of built-in speakers:2
Number of microphones:2


Battery Capacity:39.7
Battery capacity (Watt hours):39.7 / 41.4 / 54.5
Battery life (max):10 / 11
Battery technology:Lithium Polymer (LiPo)
Standby time:30 / 720


Front Camera:Y / Yes
Front camera resolution:640 x 480


Energy Star certified:Y / Yes
EPEAT compliance:Gold


Colour of product:Gold / Grey / Pink gold / Silver
Form factor:Clamshell
Housing material:Aluminium
Product Type:Notebook


3D:N / No
Aspect Ratio:16:10
Display diagonal:30.5 / 33.8
Display Resolution:2304 x 1440 / 2560 x 1600
HD type:2K Ultra HD
LED Backlight:N / Y / Yes
Panel Type:IGZO / IPS
Pixel density:226
Touchscreen:N / No


Discrete graphics adapter:N / No
Discrete graphics adapter model:No / Not available
Graphics adapter Open GL support: Yes
Maximum on-board graphics adapter memory:1.74 / 16
Maximum Resolution:3840 x 2160 / 4096 x 2304
Number of displays supported (on-board graphics):2 / 3
Number of displays supported by on-board graphics adapter:3
On-board graphics adapter:Y / Yes
On-board graphics adapter base frequency:100 / 300
On-board graphics adapter DirectX version:11.2 / 11.2/12 / 12
On-board graphics adapter dynamic frequency (max):1000 / 850 / 900
On-board graphics adapter family:Intel Iris Graphics / Intel® HD Graphics
On-board graphics adapter ID:0x161E / 0x191E
On-board graphics adapter model:Intel HD Graphics 5300 / Intel HD Graphics 615 / Intel Iris Graphics 540 / Intel® HD Graphics 515 / Intel® HD Graphics 5300
On-board graphics adapter OpenGL version:4.3 / 4.4
On-board graphics adapter outputs supported:DisplayPort, Embedded DisplayPort (eDP), HDMI


Full-size keyboard:Y / Yes
Island-style keyboard:Y / Yes
Keyboard backlit:Y / Yes
Keyboard language:Belgian / English / French / Russian / Spanish / Swiss / UK English / US English
Keyboard number of keys:78 / 79
Numeric keypad:N / No
Pointing device:Touchpad / Trackpad


Internal Memory:8
Internal memory type:LPDDR3-SDRAM
Maximum internal memory:16 / 8
Maximum internal memory (64-bit):8
Memory clock speed:1600 / 1866
Memory form factor:On-board
Memory layout (slots x size):1 x 8
Memory slots:2x SO-DIMM


3G:N / No
4G:N / No
Bluetooth:Y / Yes
Bluetooth version:4.0 / 4.2
Ethernet LAN:N / No
Near Field Communication (NFC):N / No
Wi-Fi:Y / Yes
Wi-Fi standards: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 802.11b,IEEE 802.11g,IEEE 802.11n

Operational conditions

Non-operating altitude:0 - 10000 / 0 - 4500
Operating altitude:0 - 3000
Operating relative humidity (H-H):0 - 90
Operating temperature (T-T):10 - 35
Storage temperature (T-T):-25 - 45

Optical Drive

LightScribe:N / No
Optical Drive Type:N / No

Packaging Content

AC adapter included:Y
Cables included:USB / USB Type-C
Power cord included:Y
Quick start guide:Y
Warranty card:Y

Packaging Data

AC adapter included:Y / Yes
Cables included:USB / USB Type-C
Power cord included: Yes
Quick start guide:Y
Warranty card: Yes


Ambient light sensor:Y / Yes

Ports & interfaces

CardBus PCMCIA slot type:N / No
Combo headphone/mic port:N / Y / Yes
DC-in jack:Y / Yes
Docking connector:N / No
DVI port:N / No
ExpressCard slot:N / No
Headphone outputs:1
Microphone in: No
S/PDIF out port:N / No
SmartCard slot:N / No
Thunderbolt 3 ports quantity:2
USB 3.0 (3.1 Gen 1) Type-C ports quantity:1
USB 3.1 (3.1 Gen 2) Type-A ports quantity:1
USB Type-C DisplayPort Alternate Mode:Y


AC adapter frequency:50/60
AC adapter input voltage:100 - 240
AC adapter power:29 / 61


Bus type:OPI
Configurable TDP-down frequency:600
Conflict Free processor:Y / Yes
ECC supported by processor:N / No
FSB Parity:N / No
Maximum internal memory supported by processor:16
Maximum number of PCI Express lanes:10 / 12
Memory bandwidth supported by processor (max):25.6
Memory channels supported by processor:Dual
Memory clock speeds supported by processor:1333,1600
Memory types supported by processor:DDR3L-RS-SDRAM, DDR3L-SDRAM, LPDDR3-SDRAM
Number of Processing Die Transistors:12
PCI Express configurations:1x2+2x1, 2x2, 1x4, 4x1 / 2x4,4x1 / x1 (6), x2 (4), x4 (3)
PCI Express slots version:2.0 / 3.0
Processor boost frequency:2.4 / 2.6 / 2.9 / 3 / 3.1 / 3.2
Processor cache:4
Processor cache type:L3 / Smart Cache
Processor codename:Broadwell / Skylake
Processor Cores:2
Processor family:7th gen Intel® Core™ i5 / Intel Core i5-6xxx / Intel Core M / Intel Core m3-7xxx / Intel® Core™ M
Processor frequency:0.9 / 1.1 / 1.2 / 1.3 / 2
Processor lithography:14
Processor Model:M-5Y31 / M-5Y51 / M-5Y70 / M7-6Y75
Processor operating modes:32-bit, 64-bit / 64-bit
Processor Series:Intel Core M-5Y Mobile series / Intel Core m7-6Y series
Processor Socket:BGA1234 / BGA1515
Processor threads:4
Scenario Design Power (SDP):3.5
Stepping:D1 / F0
System bus rate:5
Thermal Design Power (TDP):4.5
Tjunction:100 / 95

Processor special features

CPU configuration (max):1
Embedded options available:N / No
Enhanced Intel SpeedStep Technology:Y / Yes
Execute Disable Bit:Y / Yes
Graphics & IMC lithography:14
Idle States:Y
Intel 64:Y / Yes
Intel AES New Instructions: Yes
Intel Anti-Theft Technology: No
Intel Clear Video HD Technology: Yes
Intel Clear Video Technology:No / Y
Intel Clear Video Technology for MID: No
Intel Demand Based Switching:N / No
Intel Dual Display Capable Technology:N / No
Intel Enhanced Halt State:Y / Yes
Intel Fast Memory Access:N / Y / Yes
Intel FDI Technology:N / Y / Yes
Intel Flex Memory Access:Y / Yes
Intel HD Graphics:Y / Yes
Intel Hyper-Threading Technology: Yes
Intel Identity Protection Technology: Yes
Intel Identity Protection Technology version:1.00
Intel Insider: Yes
Intel InTru 3D Technology: Yes
Intel My WiFi Technology: No
Intel Quick Sync Video Technology: Yes
Intel Rapid Storage Technology:N / No
Intel Secure Key: Yes
Intel Secure Key Technology version:1.00
Intel Small Business Advantage (SBA): Yes
Intel Small Business Advantage (SBA) version:1.00
Intel Smart Cache: Yes
Intel Smart Response Technology: Yes
Intel Smart Response Technology version:1.00
Intel Software Guard Extensions (Intel SGX):1
Intel Stable Image Platform Program (SIPP):N / No / Y
Intel Stable Image Platform Program (SIPP) version:0.00 / 1.00
Intel Trusted Execution Technology:No / Y
Intel TSX-NI:Y
Intel TSX-NI version:0.00 / 1.00
Intel Turbo Boost Technology:2.0 / Yes
Intel Virtualization Technology (VT-x):Y / Yes
Intel Virtualization Technology for Directed I/O (VT-d):Y / Yes
Intel vPro Technology: No
Intel VT-x with Extended Page Tables (EPT):Y / Yes
Intel Wireless Display (WiDi) Technology: Yes
Intel® AES New Instructions (Intel® AES-NI):Y / Yes
Intel® Anti-Theft Technology (Intel® AT):N / No / Y
Intel® Clear Video HD Technology (Intel® CVT HD):Y / Yes
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID):No / Y
Intel® Hyper Threading Technology (Intel® HT Technology):Y / Yes
Intel® Identity Protection Technology (Intel® IPT):Y / Yes
Intel® Insider™:Y / Yes
Intel® InTru™ 3D Technology:Y
Intel® My WiFi Technology (Intel® MWT):No / Y
Intel® OS Guard:Y / Yes
Intel® Quick Sync Video Technology:Y / Yes
Intel® Secure Key:Y / Yes
Intel® Small Business Advantage (Intel® SBA):Y / Yes
Intel® Smart Cache:Y / Yes
Intel® Smart Response Technology:Y / Yes
Intel® Turbo Boost Technology:2.0 / Y / Yes
Intel® vPro™ Technology:No / Y
Intel® Wireless Display (Intel® WiDi):Y / Yes
InTru™ 3D Technology:Y / Yes
OS Guard: Yes
Processor ARK ID:5Y31 / 83612 / 84666 / 84669 / 88199
Processor code:SR23G / SR23L / SR2EH
Processor package size:20 / 30 / 30 x 16.5 x 1.05
Supported instruction sets:AVX 2.0, SSE4.1, SSE4.2 / AVX 2.0,SSE4.1,SSE4.2 / SSE4.1, SSE4.2, AVX 2.0
Thermal Monitoring Technologies:Y / Yes


Cable lock slot:N / No
Fingerprint Reader:No / Y


Bundled software:- iPhoto\n- iMovie\n- GarageBand\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- Siri\n- Safari\n- Mail\n- FaceTime\n- Messages\n- Maps\n- Notes\n- Calendar\n- Contacts\n- Reminders\n- Photo Booth\n- Preview\n- iTunes\n- iBooks\n- App Store\n- Time Machine / iMovie\nGarageBand\niBooks\nSafari\nFaceTime\nTime Machine\nPhoto Booth\niTunes\nGame Center / iMovie\nGarageBand\nSiri\nSafari\nFaceTime\niTunes\niBooks\nApp Store\nTime Machine / iPhoto\niMovie\nGarageBand\niBooks\nSafari\nFaceTime\nTime Machine\nPhoto Booth\niTunes\nGame Center
Drivers included: Yes
Operating System Architecture:64-bit
Operating system installed:Mac OS X 10.10 Yosemite / Mac OS X 10.11 El Capitan / macOS Sierra / macOS Sierra 10.12


Card reader integrated:N / No
Flash drive interface:PCI Express
Flash memory:256 / 512
Number of SSDs installed:1
Solid-state drive capacity:256 / 512
Solid-state drive interface:PCI Express
Storage Media:Flash / SSD
Total Storage Capacity:256 / 512

Weight & Dimensions

Depth:19.6 / 196.5 / 212.4
Height :14.9
Height (front):0.35 / 3.5
Height (rear):1.31
Weight:1.37 / 920
Width:28.1 / 280.5 / 304.1