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Asus U31

alaTest has collected and analyzed 12 reviews of Asus U31. The average rating for this product is 3.8/5, compared to an average rating of 4.1/5 for other products in the same category for all reviews. Reviewers are impressed by the design and durability. The battery and performance are also appreciated. Many are negative about the touchpad and keyboard. There are some mixed views about the screen.

portability, performance, battery, durability, design

usability, keyboard, touchpad

We analyzed user and expert ratings, product age and more factors. Compared to other products in the same category the Asus U31 is awarded an overall alaScore™ of 83/100 = Very good quality.

See all ASUS Laptop Computers

Review analysis

(Based on 12 reviews)

Expert Reviews  

User Reviews  

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Showing 1 - 8 of 8 Show Reviews: in English | in other languages (4)


Expert review by (

Asus U31JG review


Asus' U-series laptops have impressed us over the last couple of years with their long battery life, despite the use of normal Intel Core processors, rather than the low-voltage variety used by most other ultra-portables. The new U31JG follows this...

Great performance and battery life in one laptop is miracle enough, but the two year warranty and great screen seal the deal.

May, 2011

Expert review by : Alex Wawro (

Asus U31JG review


It's not just a fashion statement either: the Asus U31JG aluminum trim reinforces the plastic chassis, creating a sturdy ultraportable laptop that packs enough power to play games and run your presentations while remaining light enough for you to carry...

Asus has a reputation for building reliable laptops, and the durable Asus U31JG is no exception. It outperforms and outlasts many comparably priced ultraportable laptops, including Asus's own U33Jc. The U31JG isn't optimal for multimedia use, but if...

Apr, 2011

Expert review by : Techworld (

Asus U31JG review


Asus has a reputation for building reliable laptops, and the durable U31JG is no exception. It outperforms and outlasts many comparably priced ultraportable laptops, including Asus's own U33Jc. The U31JG isn't optimal for multimedia use, but if you're...

Apr, 2011

Expert review by : Alex Wawro (

Asus U31JG


The Asus U31JG, designed for urban professionals on the move, boasts a stylish brushed-aluminum finish that coats the lid and wraps around the black plastic keyboard. It's not just a fashion statement either: The aluminum trim reinforces the plastic...

Discrete graphics card ; Lightweight, with great battery life

Display has poor viewing angles and too much glare ; Mediocre keyboard and touchpad

The U31JG is ideal for getting work done on the road, but movie and music buffs should look elsewhere.

Apr, 2011

Expert review by : Brian Westover (

Asus U31JG-A1


The Asus U31JG-A1 is a slim little laptop that lasts all day on one charge. Features like Bluetooth and battery-life are great, but a flawed trackpad mars the overall package.

Aluminum construction is light and sturdy. Slim portable design. Backlit keyboard. 8 hour battery life. Bluetooth connectivity. Discrete graphics.

Trackpad is almost unusable. No optical drive.

More laptop reviews:• Microsoft Surface Pro (2017)• Dell Latitude 7280• Samsung Galaxy Book (12-Inch, LTE)• Dell Latitude 5285 2-in-1• LG gram 14 (2017)• more

Apr, 2011

Expert review by : Charles P. Jefferies (

ASUS U31JG-A1 Review


The ASUS U31JG packs an Intel Core i3 processor, Nvidia graphics with Optimus technology and almost eight hours of battery life into a thin and light 13.3-inch chassis weighing less than four pounds. What's not to like? Read our review.

Thin and light ; 7+ hours of battery life ; Good performance

Too much keyboard flex ; Poor speakers ; MSRP too high ; The ASUS U31JG thin and light combines good performance and battery life at a price that's just a bit too high.

The ASUS U31JG thin and light combines good performance and battery life at a price that's just a bit too high.

Mar, 2011

Expert review by : Matthew Elliott (

Asus U31JG-A1 Review and Ratings


This machine is a serviceable thin-and-light laptop, but with Sandy Bridge-based models flooding the scene, it's hard recommending this model, which is based on an older processor.

Lengthy battery life ; Sturdy, stylish chassis ; Two-year warranty

Some design quibbles ; Outdated processor ; No backlit keyboard ; No USB 3.0 ports

Asus keeps the bloatware to a minimum in this machine, and it includes a number of its own utilities. Asus LifeFrame works with the VGA (0.3-megapixel) Webcam and features a basic assortment of hokey image effects. More useful is Asus Secure Delete, a...

Apr, 2011

Consumer review (

Poor Service


We have another ASUS notebook and tablet, as they were a brand that I previously thought was high quality. Having a mechanical issue within the first few weeks is bad enough, but their repair service is absolutely the worst. I will not purchase this...


Service terrible - fan needed to be replaced after 5 weeks of use. ASUS sent us a postage paid label, which sounded great until we found it took a week to get to them ; In spite of having an RMA # we can never access updates on their on-line system....

Jul, 2012

Product Specifications


Audio system:Arc / HD
Built-In Microphone: Yes
Number of built-in speakers:2
Speakers manufacturer:Altec Lansing


Battery Capacity:4400 / 5600
Battery life (max):10 / 4
Number of battery cells:6 / 8


Front camera resolution (numeric):0.3


Wi-Fi certified: Yes


Colour of product:Aluminium / Black / Silver
Product colour:Aluminium / Black / Silver
Product Type:Notebook


Aspect Ratio:16:9
Display diagonal:33.8
Display Resolution:1366 x 768
Display response rise/fall:16
LED Backlight: Yes


Discrete graphics adapter: Yes
Discrete graphics adapter model:Intel GMA 4500M / Intel GMA HD / Intel HD / Intel HD Graphics / Nvidia GeForce GT 415M / UMA
Maximum graphics adapter memory:1.39
Number of displays supported (on-board graphics):2
Number of displays supported by on-board graphics adapter:2
On-board graphics adapter: Yes
On-board graphics adapter base frequency:500
On-board graphics adapter dynamic frequency (max):667 / 766
On-board graphics adapter family:Intel® HD Graphics
On-board graphics adapter model:Intel HD Graphics


Full-size keyboard: Yes
Keyboard key pitch:1.9
Numeric keypad: No
Pointing device:Touchpad


Internal Memory:3 / 4
Internal memory type:DDR3-SDRAM
Maximum internal memory:4 / 8
Memory clock speed:1066 / 1333
Memory layout (slots x size):1 x 1 + 1 x 2 / 2 x 2
Memory slots:2x SO-DIMM


3G: No
Bluetooth:No / Yes
Bluetooth version:2.0+EDR / 2.1+EDR
Cabling technology:10/100/1000Base-T(X)
Ethernet LAN: Yes
Networking features:Gigabit Ethernet / Gigabit Ethernet, WLAN
Wi-Fi: Yes
Wi-Fi standards:802.11b, 802.11g, 802.11n

Optical Drive

Optical Drive Type: No

Other features

Audio system:Arc / HD
Compliance industry standards:IEEE 802.3, IEEE 802.3U, IEEE 802.3ab / IEEE 802.3/802.3u/802.3ab
Display:LCD / LED / TFT
Graphics adapter family:Intel / nVidia
HDD user password: Yes
Infrared data port: No
Internal modem: No
Power requirements:100 - 240 V / 100 - 240V AC / 100-240V
Power supply type:AC / AC/DC
TV in port: No
Wireless Technology:802.11a/b/g/n / Wi-Fi

Packaging Content

AC adapter included:Y
Handheld remote control:N

Packaging Data

AC adapter included: Yes
Handheld remote control: No


TV tuner integrated: No

Ports & interfaces

CardBus PCMCIA slot type: No
Charging port type:DC-in jack
DC-in jack: Yes
Docking connector: No
DVI port: No
Ethernet LAN (RJ-45) ports:1
ExpressCard slot: No
HDMI ports quantity:1
HDMI Version:1.3a
Headphone outputs:1
Line-in: Yes
Microphone in: Yes
S/PDIF out port:No / Yes
SmartCard slot: No
TV Out:N
TV out port: No
USB 2.0 ports quantity:3
VGA (D-Sub) ports quantity:1


AC adapter input voltage:100 - 240
AC adapter output current:3.42 / 4.74
AC adapter output voltage:19
AC adapter power:65 / 90


Bus type:DMI
Conflict Free processor: No
CPU multiplier (bus/core ratio):15 / 16 / 18 / 19 / 20
ECC supported by processor: No
FSB Parity: No
Maximum internal memory supported by processor:8
Maximum number of PCI Express lanes:1 / 16
Memory bandwidth supported by processor (max):17.1
Memory channels supported by processor:Dual
Memory clock speeds supported by processor:800,1066
Memory types supported by processor:DDR3 800/1066 / DDR3-SDRAM
Motherboard chipset:Intel HM55 Express
Number of Processing Die Transistors:382
PCI Express configurations:1x16
PCI Express slots version:2.0
Processing Die size:81
Processor boost frequency:2.8 / 2.933
Processor cache:0.512, 3 / 3
Processor cache type:Smart Cache, L3 / SmartCache, L3
Processor codename:Arrandale
Processor Cores:2
Processor family:4th gen Intel® Core™ i5 / Intel Core i3-xxx / Intel® Pentium®
Processor frequency:2 / 2.13 / 2.4 / 2.53 / 2.66
Processor lithography:32
Processor Manufacturer:Intel
Processor Model:I3-370M / I3-380M / I5-460M / I5-480M / P6100 / P6200
Processor operating modes:32-bit, 64-bit / 64-bit
Processor Series:Intel Core i3-300 Mobile series / Intel Core i5-400 series / Intel Pentium P6000 series for Mobile
Processor Socket:BGA1288 / PGA988 / Socket 988
Processor threads:2 / 4
System bus rate:2.5
Thermal Design Power (TDP):35
Tjunction:105 / 90

Processor special features

Conflict Free processor:N
CPU configuration (max):1
Embedded options available: No
Enhanced Intel SpeedStep Technology: Yes
Execute Disable Bit: Yes
Graphics & IMC lithography:45
Idle States: Yes
Intel 64: Yes
Intel AES New Instructions: No
Intel Anti-Theft Technology: No
Intel Clear Video HD Technology:No / Yes
Intel Clear Video Technology: Yes
Intel Clear Video Technology for MID: Yes
Intel Demand Based Switching: No
Intel Dual Display Capable Technology: Yes
Intel Enhanced Halt State: Yes
Intel Fast Memory Access: Yes
Intel FDI Technology: Yes
Intel Flex Memory Access: Yes
Intel Hyper-Threading Technology:No / Yes
Intel Insider: No
Intel InTru 3D Technology: No
Intel My WiFi Technology: No
Intel Quick Sync Video Technology: No
Intel Rapid Storage Technology: No
Intel Smart Cache: Yes
Intel Trusted Execution Technology: No
Intel Turbo Boost Technology:No / Yes
Intel Virtualization Technology (VT-x):1 / Yes
Intel Virtualization Technology for Directed I/O (VT-d):No / Yes
Intel vPro Technology: No
Intel VT-x with Extended Page Tables (EPT):No / Yes
Intel Wireless Display (WiDi) Technology: No
Intel® AES New Instructions (Intel® AES-NI): No
Intel® Anti-Theft Technology (Intel® AT): No
Intel® Clear Video HD Technology (Intel® CVT HD): Yes
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID): Yes
Intel® Hyper Threading Technology (Intel® HT Technology): Yes
Intel® Insider™: No
Intel® InTru™ 3D Technology:N
Intel® My WiFi Technology (Intel® MWT): No
Intel® Quick Sync Video Technology: No
Intel® Smart Cache: Yes
Intel® Turbo Boost Technology:No / Yes
Intel® vPro™ Technology: No
Intel® Wireless Display (Intel® WiDi): No
InTru™ 3D Technology: No
Physical Address Extension (PAE):36 / Yes
Processor ARK ID:50178
Processor code:SLBUK / SLBUR / SLC22 / SLC26
Processor package size:34 / 37.5 / rPGA 37.5x 37.5, BGA 34x28
Supported instruction sets:SSE4.1, SSE4.2 / SSE4.1/4.2
Thermal Monitoring Technologies: Yes


Cable lock slot:Kensington / N / No / Yes
Cable lock slot type:Kensington
Password protection type:BIOS / BIOS, HDD, User / BIOS, User


Bundled software:Office Starter 2010
Drivers included: Yes
Operating System Architecture:64-bit
Operating system installed:Windows 7 Home Premium / Windows 7 Professional


Card reader integrated: Yes
Compatible memory cards:Memory Stick (MS), MMC, MS PRO, SD, SDHC, SDXC / memory stick (ms), mmc, sd
Hard Drive Capacity:320 / 500
Hard Drive Interface:SATA
Hard drive speed:5400
HDD Capacity:320 / 500
HDD interface:Serial ATA
HDD Speed:5400
Number of Hard Drives Installed:1
Number of HDDs installed:1
Storage Media:HDD
Total Storage Capacity:320 / 500

Weight & Dimensions

Depth:23.2 / 23.3
Height (front):2.5 / 2.53 / 2.54
Height (rear):2.8 / 2.85 / 2.99
Weight:1.78 / 1.8 / 1.88