Review Lenovo IdeaPad S400 Notebook

Sascha Mölck (translated by Liala Stiegitz), 10/18/2012

Virtually an ultrabook. Members of the slim and affordable IdeaPad S400 range are tempting to customers who are interested in an ultrabook, but do not want to pay the demanded price. Our test reveals whether Lenovo's 14-inch laptop is successful.

Lenovo provides a range of slim 14-inch laptops in its IdeaPad S400 series. Associations with ultrabooks are deliberate. However, the IdeaPad S400 models are not ultrabooks. We will deal with the currently most expensive member of the IdeaPad S400 range (599 Euros/~$776) in this review. Our test device is supplied with Intel's Core i5-3317U dual-core processor, supported by four gigabytes of working memory. Intel's integrated HD Graphics 4000 GPU takes care of video output and data is stored on a 500 gigabyte hard disk. The laptop does not have a DVD burner.

There are not many slim laptops found in the lower price range. Thus, we use Acer's Aspire V5-531(Intel Pentium 967Intel HD Graphics (Sandy Bridge)) and Aspire V5-571G (Intel Core i5-3317U, Nvidia GeForce GT 620M) to classify the device - for want of choice. Both 15.6-inch laptops are identical in build but differ in hardware equipment and price.


The IdeaPad S400's thickness of 23mm (0.91 inches) is just over the maximum thickness of 21mm (0.83 inches) specified for ultrabooks. The thin and lightweight laptop is very handy and is comfortable to carry around. The casing is made completely of plastic. Apart from the display bezel, the entire casing has been given a metallic look. The lid's back and the base unit's bottom feature a matte, silver-gray color. According to Lenovo, the S400 is also available in red. However, we could not find such models at the time of this review. The base unit's top also features a matte, black color. The applied plastic materials make a cheap impression.

The S400's casing basically makes a solid impression. However, it is sometimes quite sensitive to pressure. The casing clearly flexes when pressure is applied to the frame below the touchpad. The same can be observed at the casing's left edge, although it is not quite as pronounced. The torsional stiffness could also be better. The base unit warps readily when the laptop is picked up at both corners of the wrist rest. This is however not very surprising in view of the thin plastic casing.

That the lid warps easily is also unsurprising. The hinges keep the lid firmly in position. However, it rocks when we let go of it. Opening the lid with one hand is not possible because of the laptop's light weight. We would have appreciated a recess or an edge for the thumb to open the laptop. The fingers easily slip here.

Great: Only the screen and its bezel feature a glossy surface
Great: Only the screen and its bezel feature a glossy surface
A restrained appearance in silver-gray
A restrained appearance in silver-gray
There is no maintenance cover
There is no maintenance cover


Despite the slim casing, Lenovo managed to install the most necessary interfaces - including USB 3.0 - into the IdeaPad S400. The LAN socket is implemented as a fold-out mechanism due to the casing's wedge-shape design. We did not find a Kensington lock slot on the laptop. This was unexpected since even ultrabooks are equipped accordingly.

Left: Ethernet socket, HDMI, USB 3.0
Left: Ethernet socket, HDMI, USB 3.0
Right: 2x USB 2.0, combo audio jack, memory card reader
Right: 2x USB 2.0, combo audio jack, memory card reader


The Centrino Wireless-N 2230 Wi-Fi module in the IdeaPad S400 comes from Intel. It supports the standards 802.11 b/g/n and Intel's Wireless Display technology. The latter enables wireless transmission between the laptop and an accordingly certified monitor (e.g. a TV set). Uncertified TV sets can be made compatible for Intel's technology via an adapter. The software required for this connection can be found on Intel's website.

The Wi-Fi module also supports Bluetooth version 4.0. Lenovo's laptop disappoints a bit in the field of cabled networking. The buyer has to be content with a Fast Ethernet chip from Realtek, which is too bad. A Gigabit Ethernet chip should actually be standard nowadays. Lenovo also builds in a webcam that can be used for video calls, for example. However, it only provides very modest results.


The laptop is delivered with the usual accessories: A setup poster and two leaflets containing safety and warranty information. There is no driver DVD included.

Operating System

Windows 7 Home Premium 64-bit operating system is preinstalled on the IdeaPad S400. There is no Windows 7 DVD included. System recovery is performed via a recovery partition.

If you replace the laptop's hard disk, you will need an external DVD drive to reinstall Windows 7 from a DVD. One of our news articles (German) reveals how you can create such a DVD. Alternatively, it is possible to install Windows 7 via a USB flash drive. In addition to the downloaded files of the Windows 7 DVD, you will also need the free Microsoft application "Windows 7 USB/DVD Download Tool".

Lenovo OneKey Recovery

Using the recovery system proves to be simple and is automatic to a great extent. The OneKey recovery button is pressed when the laptop is off and boots the system. The key is located on the power button's left on the laptop. The laptop boots and Lenovo's OneKey Rescue System starts automatically. The laptop can then be reset to state of delivery or to an earlier setting. The latter requires that the user has created a system image under Windows 7 via the preinstalled OneKey Recovery software. Note: All personal data that was installed or saved on the laptop after creating the system recovery image on the laptop will be deleted.


The preinstalled software is known from other Lenovo laptops: McAfee Internet Security (60 day trial version), Adobe Reader X, Google Chrome, CyberLink YouCam (webcam software), Microsoft Office 2010 Starter, and Windows Live Essentials 2011. Beyond that, many Lenovo tools, such as EE Boot Optimizer (optimizes booting), is also installed.


Maintaining the IdeaPad S400 is possible. However, the casing's bottom would have to be removed. A sticker covers one of the screws. We did not disassemble the laptop since a shop loaned us the test device.

Many of the laptop's components would be accessible when the bottom is removed. The IdeaPad S400 sports one working memory bank. Upgrading our model is not possible because it only supports a maximum working memory of four gigabytes. The hard disk can also be replaced. But note: Only hard disks with a height of 7mm (0.28 inches) fit into the IdeaPad S400. Conventional hard disks will not fit due to a height of 9.5mm (0.37 inches). Cleaning the fan is also possible.

A tip: If you want to remove the bottom, you should first download the "Hardware Maintenance Manual" (PDF format) for the IdeaPad S400. It describes the procedure in detail. 


Lenovo includes a 24-month bring-in warranty on the laptop. The customer sends the laptop directly to Lenovo in case of damage. Warranty upgrades for the IdeaPad S400 are rare. The buyer can only opt for a 24-month pick-up & return warranty that includes Accidental Damage Protection. This covers damages that are normally not part of the actual warranty, for example: The laptop's screen would be repaired if it falls off a table and it breaks. The price for this warranty upgrade is 30 to 40 Euros (~$39 to $52).

Input Devices


The IdeaPad S400 sports a chiclet keyboard. Lenovo calls this keyboard AccuType. There is no number pad. The keys feature a medium drop and a clear pressure point. The keyboard yields a bit while typing on it. You virtually feel how thin the plastic is. Like in many other laptops from Lenovo (e.g. Lenovo's B570e-N2F23G and Lenovo's G580), the enter, backspace and right shift key are smaller than usual. Thus, it is easy to miss these keys and you will need a while to get used to them.


The touchpad features a generous size of 10.7 x 7.1 cm (4.2 x 2.8 inches). Lenovo relies on a ClickPad from Synaptics. ClickPads do not have dedicated mouse keys. The entire pad is one single key. Clicking on the pad's lower area is translated as a left or right mouse click - depending on where the finger is positioned. The touchpad's sleek surface does not impair the finger from gliding. The pad is multi-touch capable and supports features such as pinch-to-zoom.

The known AccuType keyboard is installed
The known AccuType keyboard is installed
The touchpad's size is generous
The touchpad's size is generous


Lenovo installs a screen with a native resolution of 1366x768 pixels, illuminated by LEDs, in its 14-inch laptop. Lenovo does not have other screen models available for the IdeaPad S400. The screen is not much of a delight because it is rather dark with an average brightness of 167.6 cd/m2. Acer's Aspire V5-531 and Aspire V5-571G laptops, both with the same screen, are not much better with a rate of just under 177 cd/m2. It looks better with the illumination where the IdeaPad S400 supplies a good result of 91 percent. Acer's laptops lag behind with rates of 85 and 89 percent. The rates of Acer's laptops differ because even two identical screens never supply an absolutely matching result.

Distribution of brightness
Gossen Mavo-Monitor
Maximum: 174 cd/m²
Average: 167.6 cd/m²
Brightness Distribution: 91 %
Center on Battery: 166 cd/m²
Black: 1.14 cd/m²
Contrast: 146:1
IdeaPad S400 vs. sRGB
IdeaPad S400 vs. sRGB
IdeaPad S400 vs. AdobeRGB
IdeaPad S400 vs. AdobeRGB

The S400's screen is in the midfield with a black value of 1.14 cd/m2. We must clearly call the contrast ratio of 146:1 below-average. Acer's laptops supply somewhat better results with a black value of 0.94 cd/m2 and 0.97 cd/m2. Their contrast ratios of 196:1 and 193:1 are also slightly superior to that of the IdeaPad S400. The screen cannot reproduce the sRGB or the AdobeRGB color gamut. However, this is not a problem since these color spectrums are only required in the professional picture and graphics field.

A low brightness, low contrast and glossy surface - this information points to a laptop designed for indoor use. If you intend to work outdoors anyway, you should look for a shady place.

The viewing angles are as we expected. The image distorts quickly when the vertical viewing angle is changed. In return, the screen is more generous on the horizontal plane.

The IdeaPad S400 outdoors
The IdeaPad S400 outdoors
Viewing angles: Lenovo IdeaPad S400-MAY8LGE
Viewing angles: Lenovo IdeaPad S400-MAY8LGE


The IdeaPad S400 models represent compact office laptops. However, they should also cope with everyday applications such as Internet browsing, word processing or Internet communication. The devices are generally also suitable for video rendering. Whether that is fun on a 14-inch screen is another question. The HDMI-out and the quiet operation enable using the laptop as a movie player in your living room.

Lenovo has various IdeaPad S400 models in its range. The least expensive at the time of this review costs 449 Euros (~$582) and sports Intel's Core i3-2365M processor as well as a FreeDos operating system. Apart from that, our test model is similar to the one that currently costs 600 Euros (~$777). According to Lenovo's website, there are S400 models available with a dedicated AMD Radeon HD 7450M GPU. However, we could not find these models at the testing time. Lenovo launched a line of slim 13.3-inch laptops called IdeaPad S300 adjacent to the IdeaPad S400 range. We recently reviewed a member of this series.

System info CPUZ CPU
System info CPUZ Cache
System info CPUZ Mainboard
System info CPUZ RAM
System info CPUZ RAM SPD
System info GPUZ
System info HWInfo
System information: Lenovo IdeaPad S400-MAY8LGE


Our IdeaPad S400 model is powered by Intel's Core i5-3317U ULV processor. The CPU's particularly low operating voltage proves to be quite energy-efficient. This dual-core CPU comes from Intel's Ivy Bridge processor platform and features a default clock speed of 1.7 GHz. The clock can be boosted to 2.4 GHz on both cores and 2.6 GHz on only one core.

The CPU finishes our full load test (Prime95 and FurMark run) with a clock speed of 2.3 GHz. One core is occasionally boosted to 2.4 GHz. In return, the GPU usually calculates with its minimum clock speed of 350 MHz. Every now and then, it is accelerated to 1050 MHz. The processor consistently runs with 2.4 GHz (both cores) and the GPU runs with 350 MHz on battery power. We see that the CPU and GPU cannot work at full performance simultaneously. It would apparently be too much for the IdeaPad S400's cooling system.

The Core i5-3317U processes the Cinebench benchmarks with its full clock speed of 2.4 GHz. The scores are thus on the level of other laptops using this CPU, e.g. Acer's Aspire V5-571G. The Aspire V5-571G naturally wins the GL tests clearly due to Nvidia's GeForce GT 620M GPU. Acer's Aspire V5-531 (Intel Pentium 967Intel HD Graphics (Sandy Bridge)) is defeated in every test as expected.

Cinebench R10 Rendering Single 32Bit
Cinebench R10 Rendering Multiple CPUs 32Bit
Cinebench R10 Shading 32Bit
Cinebench R10 Rendering Single CPUs 64Bit
4405 Points
Cinebench R10 Rendering Multiple CPUs 64Bit
9130 Points
Cinebench R10 Shading 64Bit
3958 Points
Cinebench R11.5 CPU Multi 64Bit
2.38 Points
Cinebench R11.5 OpenGL 64Bit
10.84 fps
Cinebench R11.5
OpenGL 64Bit (sort by value)
Lenovo IdeaPad S400-MAY8LGE
HD Graphics 4000, 3317U, Western Digital Scorpio Blue WD5000LPVT
10.84 fps ∼9%
Acer Aspire V5-531
HD Graphics (Sandy Bridge), 967, Seagate Momentus Thin ST320LT020-9YG142
6.38 fps ∼5% -41%
Acer Aspire V5-571G-53314G50Makk
GeForce GT 620M, 3317U, Hitachi Travelstar Z5K500 HTS545050A7E380
27.41 fps ∼22% +153%
CPU Multi 64Bit (sort by value)
Lenovo IdeaPad S400-MAY8LGE
HD Graphics 4000, 3317U, Western Digital Scorpio Blue WD5000LPVT
2.38 Points ∼14%
Acer Aspire V5-531
HD Graphics (Sandy Bridge), 967, Seagate Momentus Thin ST320LT020-9YG142
0.95 Points ∼5% -60%
Acer Aspire V5-571G-53314G50Makk
GeForce GT 620M, 3317U, Hitachi Travelstar Z5K500 HTS545050A7E380
2.38 Points ∼14% 0%

System Performance

The system works swiftly. There are no glitches or delays. The PCMark test scores are on the expected level. The IdeaPad S400 clearly beat Acer's Aspire V5-571G (Intel Core i5-3317UNvidia's GeForce GT 620M) in PCMark 7. We believe this is due to the IdeaPad S400's faster hard disk. Acer's Aspire V5-531 (Intel Pentium 967Intel HD Graphics (Sandy Bridge)) is clearly inferior to both other laptops in the PCMark benchmarks.

Windows 7 Experience Index
Calculations per second
Memory (RAM)
Memory operations per second
Desktop performance for Windows Aero
Gaming graphics
3D business and gaming graphics
Primary hard disk
Disk data transfer rate
PC Mark
PCMark Vantage5812 points
PCMark 72416 points
Lenovo IdeaPad S400-MAY8LGE
Intel Core i5-3317U, Intel HD Graphics 4000, Western Digital Scorpio Blue WD5000LPVT
Acer Aspire V5-531
Intel Pentium 967, Intel HD Graphics (Sandy Bridge), Seagate Momentus Thin ST320LT020-9YG142
Acer Aspire V5-571G-53314G50Makk
Intel Core i5-3317U, NVIDIA GeForce GT 620M, Hitachi Travelstar Z5K500 HTS545050A7E380
PCMark 7
PCMark Vantage
1024x768 Result58122997
Total Average (Program / Settings)
-46% / -46%
-11% / -11%

Storage Devices

HD Tune
HD Tune

All currently available IdeaPad S400 models include a 500 gigabyte hard disk. Our test device featured a hard disk from Western Digital's Scorpio Blue range (WD50000LPVT). The hard disk spins with 5400 revolutions per minute and has a height of 7mm (slightly more than ¼ inch). The measured rates of the hard disk were a pleasant surprise. The disk transfers data with an average speed of 88.2 MB/s and thus achieves a good result for a 5400 hard disk. We expected rates between 60 MB/s and 70 MB/s in a low-end laptop like the IdeaPad S400.

Western Digital Scorpio Blue WD5000LPVT
Transfer Rate Minimum: 49.5 MB/s
Transfer Rate Maximum: 118 MB/s
Transfer Rate Average: 88.2 MB/s
Access Time: 18.5 ms
Burst Rate: 111.3 MB/s

Graphics Card

Intel's integrated HD Graphics 4000 GPU takes care of video output. Intel's lower midrange graphics chip supports DirectX 11 and works with a clock between 350 and 1050 MHz. The GPU usually finished our full load test with its minimum clock of 350 MHz. It runs permanently at this speed on battery power.

The 3DMark benchmarks are in the midfield of the results of Intel's Core i5-3317U and HD Graphics 4000 combination possible performance. We added the comparison graph of Fujitsu's similarly equipped Lifebook UH572 (Intel Core i5-3317UIntel HD Graphics 4000) to illustrate how different the results can be despite the same hardware. The Aspire V5-571G naturally wins all 3D benchmarks. Intel's GPU does not stand a chance against Nvidia's GeForce GT 620M GPU. Acer's Aspire V5-531 (Intel Pentium 967Intel HD Graphics (Sandy Bridge)) cannot compete against any of the other laptops. The newer 3DMark versions cannot be performed due to the lack of DirectX 11 compatibility.

3D Mark
3DMark 039168 points
3DMark 057079 points
3DMark 06
3475 points
3DMark Vantage2816 points
3DMark 11562 points
3DMark 11 - 1280x720 Performance (sort by value)
Lenovo IdeaPad S400-MAY8LGE
HD Graphics 4000, 3317U, Western Digital Scorpio Blue WD5000LPVT
562 Points ∼3%
Acer Aspire V5-571G-53314G50Makk
GeForce GT 620M, 3317U, Hitachi Travelstar Z5K500 HTS545050A7E380
1145 Points ∼6% +104%
Fujitsu LifeBook UH572
HD Graphics 4000, 3317U, Western Digital Scorpio Blue WD5000LPVT
546 Points ∼3% -3%
3DMark Vantage - 1280x1024 P Result no PhysX (sort by value)
Lenovo IdeaPad S400-MAY8LGE
HD Graphics 4000, 3317U, Western Digital Scorpio Blue WD5000LPVT
2816 Points ∼6%
Acer Aspire V5-571G-53314G50Makk
GeForce GT 620M, 3317U, Hitachi Travelstar Z5K500 HTS545050A7E380
4229 Points ∼9% +50%
Fujitsu LifeBook UH572
HD Graphics 4000, 3317U, Western Digital Scorpio Blue WD5000LPVT
2438 Points ∼5% -13%

Gaming Performance

A look at the frame rates of the games we tested immediately makes clear: The IdeaPad S400 is not a laptop designed for gaming. However, the device can cope with undemanding games like the FIFA series.

low med.high ultra
StarCraft 2 (2010) 63.810.66.9fps
The Elder Scrolls V: Skyrim (2011) 13.66.2fps
Fifa 13 (2012) 59.137.523.9fps


System Noise

The very low noise created by the IdeaPad S400 proves to be its advantage. We measured a noise level of 30.7 dB(A) to 31.4 dB(A) in idle mode. The fan was barely audible. The hard disk was heard occasionally. The laptop even remained pleasantly quiet during full load (Prime95 and FurMark run) with 36.3 dB(A). The noise level of 32 dB(A) was virtually on the same level as in idle in the medium load range (3DMark 06).

Noise Level

Idle 30.7 / 31 / 31.4 dB(A)
HDD 31.3 dB(A)
Load 32 / 36.3 dB(A)
    30 dB
40 dB
50 dB
min: , med: , max:    Voltcraft sl-320 (15 cm distance)


Excessive heat did not develop on the top or the bottom. The IdeaPad S400 reached temperatures between 27 and 32.3 degrees Celsius in idle. The temperatures increased to rates between 24 and 39.3 degrees Celsius during full load (Prime95 and FurMark run simultaneously). Consequently, the laptop can be used comfortably over the entire load range. We could place the device on our lap at all times. Even the wrist rest's temperatures remained within a range that always enabled use.

The CPU clocked with 2.3 - 2.4 GHz during the stress test in AC-mode (Prime95 and FurMark run for at least one hour). The GPU ran with 350 MHz (it was occasionally accelerated to 1050 MHz). The CPU consistently clocked with 2.4 GHz and the GPU ran with 350 MHz on battery power. The CPU's temperature leveled off at 61-62 degrees Celsius.

Max. Load
 39.3 °C30.6 °C27.3 °C 
 38.1 °C38 °C29.3 °C 
 34.9 °C31.9 °C25.3 °C 
Maximum: 39.3 °C
Average: 32.7 °C
27 °C27.6 °C34 °C
25.8 °C29 °C30.1 °C
24 °C27 °C27.8 °C
Maximum: 34 °C
Average: 28 °C
Power Supply (max.)  47.8 °C | Room Temperature 23.5 °C | Voltcraft IR-360


The IdeaPad S400's stereo speakers are located on the bottom. Lenovo has done nothing special with the speakers in the S400. They produce a pleasant and full sound. This is due to the preinstalled Dolby Advanced Audio software. However, they lack bass. The speakers are more than sufficient for an office laptop. It is still always possible to connect headphones or external speakers to the laptop.

Battery Life

Power Consumption

The included PSU supplies a maximum power of 40 Watts. This indicates that the IdeaPad S400 is energy-efficient - and our measurements confirm that. We measured a power consumption of 5.3 to 7.7 Watts in idle. Even similarly equipped ultrabooks, such as Fujitsu's LifeBook UH572, do not manage these rates. Acer's Aspire V5-531 (8 to 10.5 Watts) and Aspire V5-571G (6.6 to 10.2 Watts) cannot match that either. The S400's power consumption increased to 29.7 Watts during full load (Prime95 and FurMark run). The Aspire V5-531 is close behind with 33.9 Watts. The Aspire V5-571G's power consumption reaches 49.5 Watts, which is no surprise considering that Nvidia's powerful GeForce GT 620M chip has to be supplied with power. With 18.2 Watts, the IdeaPad S400 is again before Acer's laptops (28.4 Watts and 49.5 Watts) in medium load (3DMark 06).

Power Consumption
Off / Standby 0.4 / 0.4 Watt
Idle 5.3 / 7.6 / 7.7 Watt
Load 18.2 / 29.7 Watt
Key: min: , med: , max:         Voltcraft VC 940

Battery Runtime

The IdeaPad S400 accomplished a runtime of 5:17h in idle mode. Both Acer laptops come close to the S400 with 5:09h (V5-531) and 5:34h (V5-571G). Idle mode is measured using the Battery Eater Reader's test, where the screen is set to minimum brightness, energy-savings profile is enabled and the wireless modules (Wi-Fi, Bluetooth) are disabled. However, we have to advise against using the S400 in minimum brightness because almost nothing can be seen on the screen. The laptop can only be used in dimmed rooms this way.

The battery was drained after 1:27h in load. Acer's laptops lasted 9 minutes (V5-531) and 5 minutes (V5-571G) longer. The S400 ran through the Battery Eater Classic test, comprised of maximum screen brightness, enabled high-performance profile and wireless modules, for the load test. Our Wi-Fi test ran for 3:18h on the IdeaPad S400. Acer's laptops lasted 6 minutes longer (V5-531) and 3 minutes shorter (V5-571G). Websites are automatically opened every 40 seconds via a script in the Wi-Fi test, energy-saving mode is enabled and the screen's brightness is set to approximately 150 cd/m2.

The IdeaPad S400 should achieve longer battery runtimes owing to the low power consumption. Regrettably, the low-capacity battery (32 Wh) prevents that. If you are looking for a long-lasting laptop, you will not be satisfied with the IdeaPad S400. Most entry-level laptops (300 - 400 Euros/~$389 - $518) achieve a much longer battery life due to their higher-capacity battery. Both Acer laptops roughly achieve the same runtime as the S400 although they have a slightly higher-capacity battery of 37 Wh.

Battery Runtime
Idle (without WLAN, min brightness)
5h 17min
WiFi Surfing
3h 18min
Load (maximum brightness)
1h 27min


The IdeaPad S400's advantages are its low weight, slim design, low power consumption, quiet operating noise and good application performance. All of these traits make the device a very portable laptop. However, the short battery life puts a spoke in the wheel because the device always has to be used near an outlet. Apart from the short battery runtime, the dark and low-contrast screen is a downside of the IdeaPad S400.

The price of around 600 Euros (~$777) for the most expensive IdeaPad S400 model that we tested is on a par with the IdeaPad U310 and IdeaPad U410 from Lenovo's ultrabook series. We discovered models in both series that currently cost around 600 Euros. Thus, the question why someone should buy the IdeaPad S400 and not an ultrabook arises. They feature a considerably better (aluminum) casing and also offer a better battery runtime. If you are interested in the IdeaPad S400, you should preferably take one of the low-end models. Their performance is completely sufficient for routine applications.

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In Review: Lenovo IdeaPad S400-MAY8LGE, courtesy of:
In Review:  Lenovo IdeaPad S400-MAY8LGE


Lenovo IdeaPad S400-MAY8LGE
Graphics adapter
Intel HD Graphics 4000, Core: 350-1050 MHz,
4096 MB 
14 inch 16:9, 1366x768 pixel, Chi Mei N140BGE-LB2, TN LED, glossy: yes
Intel HM77 (Panther Point)
Western Digital Scorpio Blue WD5000LPVT, 500 GB 
5400 rpm
Intel Panther Point PCH - High Definition Audio Controller
2 USB 2.0, 1 USB 3.0, 1 HDMI, Audio Connections: combo audio jack, Card Reader: SD, MMC,
Realtek RTL8102E Family PCI-E Fast Ethernet (10/100MBit), Intel Centrino Wireless-N 2230 (b g n ), 4.0 Bluetooth
height x width x depth (in mm): 23 x 330 x 230 ( = 0.91 x 12.99 x 9.06 in)
1.8 kg ( = 63.49 oz) Power Supply: 158 g ( = 5.57 oz)
32 Wh Lithium-Ion
599 Euro
Operating System
Microsoft Windows 7 Home Premium 64 Bit
Additional features
Webcam: Yes, Speakers: stereo, Keyboard Light: no, 24 Months Warranty


[+] compare
The webcam features a status LED.
The webcam features a status LED.
and provides a maximum power of 40 watts.
and provides a maximum power of 40 watts.
The PSU weighs 158 grams...
The PSU weighs 158 grams...
and a capacity of 32 Wh.
and a capacity of 32 Wh.
The battery weighs 191 grams...
The battery weighs 191 grams...
The small button starts Lenovo's Recovery System.
The small button starts Lenovo's Recovery System.
Screws beneath the rubber feet also have to be removed when taking off the bottom.
Screws beneath the rubber feet also have to be removed when taking off the bottom.
The network socket is pushed open.
The network socket is pushed open.
Serious looks.
Serious looks.
The lid cannot be opened any further.
The lid cannot be opened any further.
The keys feature a medium drop.
The keys feature a medium drop.
The hinges keep the lid firmly in position.
The hinges keep the lid firmly in position.
Veriface enables securing system access via face recognition.
Veriface enables securing system access via face recognition.

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+Thin, lightweight and handy
+24 month warranty
+Always runs quietly
+Low consumption
+Good application performance


-Fast Ethernet only
-Contrast-poor, dark screen
-Four GB RAM maximum
-Low-capacity battery (32Wh) - short battery life


What we like

The low power consumption and quiet operating noise.

What we'd like to see

A brighter, higher-contrast screen. A higher-capacity battery so the laptop manages a better runtime.

What surprises us

The power consumption of Lenovo's IdeaPad S400 even undercuts a few ultrabooks.

The competition

Both mentioned laptops: Acer Aspire V5-531 and Acer Aspire V5-571G. For want of alternatives, we would also count conventional 14 inch laptops, such as the entry-level models Dell Vostro 3460, Fujitsu LifeBook LH531 and Medion Akoya E4212, to the competition.


Lenovo IdeaPad S400-MAY8LGE
10/05/2012 v3
Sascha Mölck

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> Notebook / Laptop Reviews and News > Reviews > Archive of our own reviews > Review Lenovo IdeaPad S400 Notebook
Author: Sascha Mölck, 2012-10-18 (Update: 2013-06- 6)