联想 IdeaPad N581 笔记本测评
Lenovo has launched yet another series of all-around laptops with the IdeaPad N581 range. The line is comprised of innumerable models featuring various hardware configurations. More about that later. We tested one of the lowest-end members from the series. The test model harbors Intel's Pentium B970 dual-core processor, which is supported by four gigabytes of working memory. Intel's HD Graphics (Sandy Bridge) is responsible for video output. Data is stored on a 500 gigabyte hard disk and the laptop also provides a DVD burner.
We use HP's Compaq Presario CQ58-148SG (Intel Pentium B950, Intel HD Graphics (Sandy Bridge)) and Sony's Vaio VPC-EH3C0E/W (Intel Pentium B960, Intel HD Graphics (Sandy Bridge)) as comparable options.
联想推出另一系列的全能笔记本电脑的IdeaPad N581范围。该生产线是由无数个型号，各种硬件配置。后面会有更多的。我们测试了该系列最低端的成员之一。测试模型港口英特尔的奔腾B970双核心的处理器，该处理器支持4 GB的工作记忆。 Sandy Bridge的英特尔HD图形（）是负责视频输出。数据存储在一个500 GB的硬盘和笔记本电脑还提供了一个DVD刻录机。
我们使用HP的Compaq Presario自由人CQ58-148SG（英特尔奔腾B950，英特尔HD Graphics（距桥））和索尼的Vaio VPC-EH3C0E/ W（英特尔奔腾B960，英特尔高清显卡的Sandy Bridge）相媲美的选项。
Case
The IdeaPad N581 is made completely of plastic. The lid's rear is rubber-coated just like the wrist rest and keyboard bezel. Here, Lenovo makes reference to the ThinkPad series. The laptop does not feature many glossy parts due to the rubberized surfaces. The only exceptions are the screen and display bezel. The case's workmanship is acceptable, although there are a few flaws. For example, a few places with sharp edges on the base unit's sides.
The base unit basically conveys a solid impression. It hardly yields under pressure. Only the bezel over the optical drive can be bent very much. The laptop only warps marginally when we pick it up at its opposite corners. The lid also can be twisted a bit. The hinges keep the display firmly in position. The lid rocks when we let go of it. It is possible to open the laptop with one hand if you lift the lid carefully.
IdeaPad N581完全是由塑料。盖的背面是橡胶涂层一样的腕托和键盘面板。在这里，联想的ThinkPad系列。笔记本电脑不配备有光泽的部分，由于橡胶表面。唯一的例外是屏和显示器的面板。情况下的工艺是可以接受的，但也有一些缺陷。例如，一些地方对基本单元的两侧有锋利的边缘。
基本单元基本上传达了一个坚实的印象。它几乎不产生下压力。只有在光驱挡板，可弯曲非常多。笔记本电脑只弯曲轻微，我们把它捡起来时，在其对面的角落。盖也可以扭了一下。铰链使显示屏保持牢固定位。当我们让到了它的盖岩。它可以用一只手打开笔记本电脑，如
Connectivity
Lenovo's N581 does not bear any surprises when it comes to connectivity and presents the expected interfaces. It is great to see that Lenovo has given the laptop two USB 3.0 ports. Neither HP's Compaq Presario CQ58-148SG nor Sony's Vaio VPC-EH3C0E/W provides that.
联想N581不承担任何惊喜，当涉及到连接，并提出了期望的接口。非常高兴地看到，联想的笔记本电脑有两个USB 3.0端口。无论是HP Compaq Presario自由人CQ58-148SG也没有索尼的Vaio VPC-EH3C0E/ W规定。
Communication
The test model we were supplied with is equipped with an undefined Wi-Fi module from Broadcom. The Wi-Fi module includes a Broadcom Bluetooth chip that supports version 4.0. Wired network connections are managed by Atheros' AR8161/8165 chip (Gigabit Ethernet). A webcam is installed in the display bezel.
Accessories
The usual accessories are included: a setup poster and two leaflets containing warranty information and safety instructions.
Operating System and Recovery
Windows 7 Home Premium 64-bit is installed as the operating system in the IdeaPad N581's state of delivery. A Windows 7 DVD is not included for the device. The system can be retrieved via a recovery partition. To initiate the recovery process, a small button beside the power button is pressed when the laptop is off. If you are planning to install a new hard disk, you will need to reinstall Windows 7 from a DVD. One of our news articles (German) reveals how the user can get a Windows 7 DVD free of charge.
Software
Lenovo installs quite a bit of software on the hard disk: McAfee Antivirus Plus (60-day trial version), Adobe Reader X, Google Chrome, Power2Go (DVD/CD burning application), CyberLink's YouCam (webcam software), Microsoft Office 2010 Starter, Windows Live Essentials 2011.
Beyond that, there are also a few tools from Lenovo. Two programs are particularly worth mentioning: Veriface and EE Boot Optimizer. Veriface is a face-recognition utility with which system access can be secured. EE Boot Optimizer is to optimize booting Windows 7.
Maintenance
A big cover on the device's bottom enables accessing the hard disk, working memory and Wi-Fi module. The user can access two memory banks. Our test laptop came with a four gigabyte module. The laptop supports a maximum working memory of 8 GB. The hard disk can be replaced in a few steps. The fan is also behind the maintenance cover, but it is not possible to clean it. However Lenovo has not forgotten to include a cleaning possibility. Lenovo's energy management software includes a function called "Dust Cleaning". It is supposed to blow out accumulated dust from the cooling system when enabled. Time will tell how effective this function is.
Warranty
Lenovo includes a 12-month bring-in warranty on the laptop. The customer sends the laptop directly to Lenovo in case of damage. The warranty can be upgraded to a period of 24 months for around 30 Euros (~$39) or 36 months for 50 to 60 Euros (~$65 to $78). Tip: All available warranty upgrades can be looked into on Lenovo's online shop via the laptops serial number.
通讯
我们提供的测试模型配备了一个未定义的来自Broadcom的Wi-Fi模块。 Wi-Fi模块包括了Broadcom的蓝牙芯片，支持4.0版本。有线网络连接进行管理由Atheros的AR8161/8165的芯片（千兆位以太网）。一个摄像头安装在显示器边框。
饰品
常用的配件包括：安装海报和传单，包含保修信息和安全说明。
操作系统和恢复
Windows 7家庭高级版64位安装的操作系统交付在了IdeaPad N581的状态。不包括的Windows 7 DVD的设备。通过该系统可检索的恢复分区。要启动恢复过程中，按下电源按钮旁边的一个小按钮，当笔记本电脑处于关闭状态。如果您计划安装一个新的硬盘，您将需要重新安装Windows 7从DVD。我们的新闻文章（德国）显示，用户可以得到免费的Windows 7 DVD。
软件
联想安装相当一个位的软件在硬盘上：迈克菲防病毒+（60天试用版），使用Adobe Reader X，谷歌Chrome，“威力酷烧”（DVD / CD燃烧的应用程序），讯连科技YouCam会网络摄像头软件，微软办公2010入门的Windows Live Essentials 2011。
除此之外，也有一些工具，从联想。两个方案特别值得一提的是：VeriFace的和EE引导优化。 VeriFace是可以保证系统访问的面部识别实用程序。 EE引导优化是优化Windows 7的开机。
保养
在设备的底部的一大盖可以访问硬盘，内存和Wi-Fi模块。用户可以访问两个存储器银行。我们测试的笔记本电脑来到一个4 GB的模块。的笔记本电脑支持的最大内存8 GB。几个步骤可以更换硬盘。风扇也是后面的维修罩，但它是不可能将它清洁。但是联想并没有被遗忘，包括清洁的可能性。联想能源管理软件包括一个功能叫做“除尘”。它应该是从冷却系统启用时积累的灰尘吹出来的。时间会告诉我们，这个功能是如何有效。
保
联想包括12个月，在保修期内的笔记本电脑上。的客户将直接向联想的笔记本电脑损坏的情况下。约30欧元（约$ 39），50至60欧元（约$ 65至$ 78）个月或36个月到24个月内的保修可以升级。提示：所有可用的保修升级可以考虑联想的网上商店，通过笔记本电脑的序列号。
Input Devices
Keyboard
Lenovo installs its own, well-known, AccuType keyboard into the IdeaPad N581 that is also built into many other Lenovo laptops. The keys feature a clear pressure point and a sufficient drop. One feature of Lenovo’s keyboards is the rather small "enter", "backspace" and the right "shift" key. They are easily missed in the beginning and thus need a certain period of familiarization.
Touchpad
The laptop's touchpad features a generous size of 10.2 x 5.4 cm (4.0 x 2.1 inches). It is slightly lowered in the wrist rest and rubber-coated, just like the wrist rest. The finger should not be pressed too hard on the touchpad when gliding over its surface because the rubber coat slows down the finger and makes gliding difficult. The touchpad's right edge serves as the scroll bar. However, it is cannot be seen or felt since it is not marked. The touchpad supports multi-touch gestures. Thus, functions like pinch-to-zoom are available. Both mouse keys are below the touchpad and feature a clear pressure point and short drop.
键盘
联想的IdeaPad N581还内置了许多其他的联想笔记本电脑安装其自己的，良好的已知的，AccuType的键盘到。键功能明确的压力点，并有足够的下降。联想的键盘有一个特点，是相当小的“输入”，“退格”，右边的“Shift”键。他们很容易被错过的开始，因此需要一段时间熟悉。
触摸板
笔记本电脑的触摸板设有一个较大的尺寸为10.2×5.4厘米（4.0×2.1英寸）。腕托和橡皮略有降低，就像腕托。手指应不能压得太硬滑翔在其表面上时，在触摸板上，因为橡胶外套减慢了手指，使滑翔困难的。触摸板的右边缘的滚动条。然而，它是不能被看到或认为，因为它没有被标记。触摸板支持多点触控手势。因此，像捏到变焦功能。触控板下方的两个鼠标键，并设有明显的压力点，短期下跌。
Display
Unsurprisingly Lenovo builds a 15.6-inch, glossy-type screen into the IdeaPad N581. The screen features a native resolution of 1366x768 pixels. It is illuminated by LEDs. Other screen models are not offered. Considering it is a low-budget laptop, the screen's average brightness of 219.7 cd/m2 is quite high. It surpasses the rates of HP's Compaq Presario CQ58-148SG (186.7 cd/m2) and Sony's Vaio VPC-EH3C0E/W (199.6 cd/m2).
不出所料联想建立了一个15.6英寸，光面型的IdeaPad N581的屏幕分成。该屏幕采用原生分辨率为1366×768像素。它是由发光二极管照明。其他屏幕的机型所没有的。考虑到这是一部低预算的笔记本电脑，屏幕的平均亮度为219.7流明是相当高的。它超越了HP Compaq Presario自由人CQ58-148SG（186.7 cd/m2的）和索尼的Vaio VPC-EH3C0E/ W（199.6 cd/m2的）的比率。
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Brightness Distribution: 93 %
Center on Battery: 223 cd/m²
Contrast: 163:1 (Black: 1.37 cd/m²)45.37% AdobeRGB 1998 (Argyll 2.2.0 3D)
53.2% sRGB (Argyll 2.2.0 3D)
46.95% Display P3 (Argyll 2.2.0 3D)
The IdeaPad N581's black value of 1.37 cd/m2 is in the lower midfield. The contrast ratio of 163:1 is not much better. Thus, none of the three laptops excel in terms of black value and contrast. HP's Compaq Presario CQ58-148SG (1.24 cd/m2; 152:1) and Sony's Vaio VPC-EH3C0E/W (1.54 cd/m2; 144:1) even supply worse rates for the most part. The screen covers neither the sRGB nor the AdobeRGB color spectrum. However, this is not a problem since these color spaces are only required in the professional picture and graphics field.
黑色的IdeaPad N581的价值为1.37 cd/m2的是在中场。 163:1的对比度也不遑多让。因此，三台笔记本电脑没有擅长的黑色值和对比度方面。 HP Compaq Presario自由人CQ58-148SG（1.24流明，152:1）和索尼的Vaio VPC-EH3C0E/ W（1.54流明，144:1）甚至提供更糟糕的利率在大多数情况下。该屏幕无论是覆盖SRGB，也不是AdobeRGB色彩频谱。然而，这不是一个问题，因为这些颜色空间的情况只需要在专业图像和图形字段。
The screen's brightness allows using the laptop outdoors. However, the glossy-type surface makes this difficult. Thus, you should avoid overly bright surroundings and direct sunlight.
允许使用的笔记本电脑在户外屏幕的亮度。然而，光泽的表面，使这个困难。因此，你应该避免过于明亮的环境中，避免阳光直射。
The screen's viewing angle stability did not surprise us and corresponds to the IdeaPad N581's price range. Changing the vertical viewing angle quickly causes the image to distort. In return, the horizontal viewing angles are more tolerant.
屏幕的可视角度稳定性并没有使我们感到惊讶和对应的IdeaPad N581的价格区间。迅速改变垂直可视角度，使图像扭曲。作为回报，水平可视角度更宽容。
Performance
Lenovo's IdeaPad N581-MBA4GE is a classic office laptop for price-conscious buyers. Routine computing tasks, such as Internet communication, Internet browsing, office tasks or video rendering, are no problem for the device. The latter also applies to HD videos. We tested playback with a video in Full HD resolution (1920x1080 pixels) and H.264 encoding. The processor's capacity was an average 21 percent (measured using DXVA Checker). The video was rendered smoothly. The same is true for YouTube videos in every quality level. Thus, the laptop is qualified as a quiet video player for the living room.
Should you need more power you can turn to one of the other models from the IdeaPad N581 range. Online shops currently list roughly twenty IdeaPad N581 versions. The models differ in CPU, working memory size, hard disk capacity and operating system. There are even alternatives that feature a dedicated Nvidia GeForce GT 610M GPU in addition to Intel's integrated GPU. The prices range from 350 to 700 Euros (~$454 to $907).
联想的IdeaPad N581-MBA4GE是一个典型的办公笔记本电脑价格敏感的买家。常规的计算任务，如互联网通讯，互联网浏览，办公任务或视频渲染，是没有问题的设备。后者也适用于高清视频。我们测试用的全高清分辨率（1920×1080像素）和H.264编码的视频播放。处理器的能力是一个平均的21％（使用DXVA检查）。视频呈现的顺利进行。同样是真实的YouTube视频在每一个质量水平。因此，作为一个安静的视频播放器，在客厅的笔记本电脑是合格的。
如果您需要更多的权力，你可以打开了IdeaPad N581范围的其他车型之一。目前，网上商店列出大约20的的IdeaPad N581版本。模型的区别在于CPU，内存大小，硬盘容量和操作系统。甚至有配备了一个专用的NVIDIA GeForce GT610M GPU的替代品，除了英特尔的集成GPU。价格范围从350到700欧元（约$454至$907）。
Processor
Our IdeaPad N581 test device sports Intel's Pentium B970 processor. The dual-core CPU belongs to Intel's Sandy Bridge processor range and has a clock speed of 2.3 GHz. It does not feature Turbo. The B970 ran through the stress test (Prime95 and FurMark run simultaneously) at full speed in AC-mode. The GPU also clocked at its full speed of 1150 MHz. On battery, the clock speed was reduced to 2.1 GHz for a moment before it climbed to 2.3 GHz again. This was the opposite for the GPU. It ran at full speed (1150 MHz) for a short moment and then settled between 1050 and 1150 MHz. The CPU also clocked at full speed during the Cinebench tests. The test results are on the expected level.
处理器
我们的IdeaPad N581测试设备运动英特尔奔腾B970处理器。双核CPU属于英特尔的Sandy Bridge系列处理器的时钟速度为2.3 GHz的。它没有配备涡轮增压。 B970通过压力测试（Prime95和FurMark进行同时运行），在AC模式全速运行。 GPU主频为1150 MHz的全速。电池供电，减少到2.1 GHz的时钟速度了一会儿，然后再次攀升至2.3 GHz的。这是为GPU相反。它运行在全速（1150 MHz）的一个短暂的时间，然后在1050和1150 MHz的解决。全速的CPU主频为在CINEBENCH的测试。测试结果的预计水平。
| Lenovo IdeaPad N581-MBA4YGE HD Graphics (Sandy Bridge), B970, Seagate Momentus 5400.6 ST9500325AS | HP Compaq Presario CQ58-148SG HD Graphics (Sandy Bridge), B950, Toshiba MQ01ABD032 | Sony Vaio VPC-EH3C0E/W HD Graphics (Sandy Bridge), B960, WDC Scorpio Blue WD3200BPVT-55JJ5T0 | |
|---|---|---|---|
| Cinebench R11.5 | -5% | -14% | |
| OpenGL 64Bit | 7.31 | 7.15 -2% | 5.54 -24% |
| CPU Multi 64Bit | 1.75 | 1.63 -7% | 1.68 -4% |
System Performance
The laptop's work speed is acceptable. We did not notice any glitches. The PCMark test scores are on the expected level and thus on a par with HP's Compaq Presario CQ58-148SG (Intel Pentium B950, Intel HD Graphics (Sandy Bridge)) and Sony's Vaio VPC- EH3C0E/W (Intel Pentium B960, Intel HD Graphics (Sandy Bridge)). If you are unhappy with the system's responsiveness, you should replace the hard disk with a solid state drive.
系统性能
笔记本电脑的工作速度是可以接受的。我们没有发现任何毛刺。 “的PCMark测试成绩是预期的水平，并因此与惠普的康柏Presario自由人CQ58-148SG（英特尔奔腾B950，英特尔HD显卡的Sandy Bridge）和索尼的Vaio VPC-EH3C0E/ W（英特尔奔腾B960，英特尔HD Graphics看齐（距桥））。如果你是系统的响应速度感到不满，你应该更换硬盘与固态驱动器。
| PCMark Vantage Result | 4122 points | |
| PCMark 7 Score | 1742 points | |
Help | ||
| PCMark 7 - Score (sort by value) | |
| Lenovo IdeaPad N581-MBA4YGE | |
| HP Compaq Presario CQ58-148SG | |
| PCMark Vantage - 1024x768 Result (sort by value) | |
| Lenovo IdeaPad N581-MBA4YGE | |
| HP Compaq Presario CQ58-148SG | |
| Sony Vaio VPC-EH3C0E/W | |
Storage Devices
The laptop's 500 gigabyte hard disk supplies enough storage space for innumerable pictures, music tracks or other files. Lenovo installs a hard disk from Seagate's Momentus 5400.6 range. Like the series' name indicates, the hard disk spins at a speed of 5400 revolutions per minute. The hard disk's measured rates are as we expected: in the lower midfield. The average transfer rate is 62.6 MB/s and the access time is 19.2 ms.
笔记本电脑的500 GB硬盘提供足够的存储空间，为无数的图片，音乐曲目或其他文件。联想安装了希捷的Momentus5400.6系列硬盘。系列的名称一样，硬盘转速为每分钟5400转的速度。测量硬盘的价格如我们预期：在较低的中场。平均传输率是62.6 MB / s和存取时间为19.2毫秒。
Graphics Card
Intel's HD Graphics (Sandy Bridge) GPU is responsible for video output in the IdeaPad N581. Intel's entry-level GPU is based on Intel's HD Graphics 2000 and supports DirectX 10.1. The GPU finished the stress test (Prime95 and FurMark run simultaneously) with 1150 MHz in AC-mode and 1050 MHz to 1150 MHz on battery power.
The scores of the various 3DMark tests are on the expected level of other laptops that use Intel's HD Graphics (Sandy Bridge), such as HP's Compaq Presario CQ58-148SG. The results of Sony's Vaio VPC-EH3C0E/W partly lag behind the other two laptops. Our guess is that it is a driver issue.
图形卡
Sandy Bridge的英特尔HD图形（）GPU负责在IdeaPad N581的视频输出。英特尔的入门级GPU是基于英特尔高清显卡2000，支持DirectX 10.1。 GPU完成的压力测试（Prime95和FurMark进行同时运行），与1150 MHz的交流模式和1050 MHz至1150 MHz的电池电量。
各种3DMark测试分数是其他笔记本电脑使用Sandy Bridge的英特尔HD图形（），比如HP的Compaq Presario自由人CQ58-148SG的预计水平。索尼的Vaio VPC-EH3C0E/ W的结果一定程度落后于其他两款笔记本电脑。我们的猜测是，它是一个驱动程序的问题。
| 3DMark 03 Standard | 6852 points | |
| 3DMark 05 Standard | 4921 points | |
| 3DMark 06 Standard Score | 2577 points | |
| 3DMark Vantage P Result | 1037 points | |
Help | ||
| 3DMark 06 - 1280x1024 Standard Score AA:0x AF:0x (sort by value) | |
| Lenovo IdeaPad N581-MBA4YGE | |
| HP Compaq Presario CQ58-148SG | |
| Sony Vaio VPC-EH3C0E/W | |
| 3DMark Vantage - 1280x1024 P Result (sort by value) | |
| Lenovo IdeaPad N581-MBA4YGE | |
| HP Compaq Presario CQ58-148SG | |
| Sony Vaio VPC-EH3C0E/W | |
Gaming Performance
As true for all laptops featuring a Pentium processor and the most basic Intel GPU - if you want to play up-to-date 3D games, you should steer clear of this device. Its power is only enough to render games in their lowest resolution and quality level. However, games like FIFA 11, 12 and 13 can be played in a higher resolution/quality.
游戏性能
适用于所有的笔记本电脑，配备了奔腾处理器和英特尔最基本的GPU - 如果你要玩到最新的3D游戏，你应该避开此设备。它的力量足以使游戏的最低分辨率和质量水平。然而，游戏FIFA 11，12和13等可以发挥更高的分辨率/质量。
| low | med. | high | ultra | |
|---|---|---|---|---|
| StarCraft 2 (2010) | 64.2 | 11.6 | 8.7 | |
| Fifa 13 (2012) | 66.2 | 44.5 | 17.5 |
Emissions
System Noise
The laptop's quiet operation is very praiseworthy. The device only produced a noise of 35.1 dB even during full load (Prime95 and FurMark run simultaneously). The noise level of 31.5 dB(A) at idle was even better. Almost the same noise level as during load was reached as soon as the DVD drive was used (35.2 dB(A)).
系统噪声
笔记本电脑的安静的操作是非常值得称道的。该设备只生产了35.1分贝的噪音，即使在满负荷（Prime95和FurMark进行同时运行）。在怠速31.5分贝（A）的噪音水平，甚至更好。在负载几乎相同的噪声水平尽快达到DVD驱动器（35.2分贝（A））。
Noise Level
| Idle |
| 31.4 / 31.4 / 31.5 dB(A) |
| HDD |
| 32.3 dB(A) |
| DVD |
| 35.2 / dB(A) |
| Load |
| 31.8 / 35.1 dB(A) |
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30 dB silent 40 dB(A) audible 50 dB(A) loud |
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min:  , med:  , max:  Voltcraft sl-320 (15 cm distance) | ||
Temperature
The IdeaPad N581's surface temperatures were always within an acceptable range. We measured temperatures between 24 and 32.6 degrees Celsius on both the top as well as the bottom during idle mode. The temperatures climbed to rates between 24 and 38.1 degrees Celsius during full load. Overall, the temperatures do not thwart working with the laptop. It is even possible to place the device on the lap.
The CPU's and GPU's full clock was always available during our stress test performed in AC-mode (Prime95 and FurMark run simultaneously for at least one hour). The CPU also clocked at full speed on battery power. The GPU clocks with 1050 to 1150 MHz. The CPU's temperatures settled to 68 degrees Celsius here.
IdeaPad N581的表面温度总是在一个可接受的范围之内。我们的顶部以及底部在空闲模式下测得的温度在摄氏24度和32.6度之间。气温攀升至24至38.1度摄氏率在满负荷。总体而言，温度不阻碍工作的笔记本电脑。它甚至可以将设备上一圈。
CPU和GPU的完整的时钟总是可以在我们的压力测试在AC模式（同时运行Prime95和FurMark进行至少一个小时）。在电池供电的CPU主频全速。 GPU与1050〜1150 MHz的时钟。 CPU的温度稳定到68摄氏度这里。
(+) The maximum temperature on the upper side is 38.1 °C / 101 F, compared to the average of 34.3 °C / 94 F, ranging from 21.2 to 62.5 °C for the class Office.
(+) The bottom heats up to a maximum of 37.1 °C / 99 F, compared to the average of 36.8 °C / 98 F
(+) In idle usage, the average temperature for the upper side is 28.5 °C / 83 F, compared to the device average of 29.5 °C / 85 F.
(±) The palmrests and touchpad can get very hot to the touch with a maximum of 36 °C / 96.8 F.
(-) The average temperature of the palmrest area of similar devices was 27.6 °C / 81.7 F (-8.4 °C / -15.1 F).
Speakers
The IdeaPad N581's speakers are located above the keyboard behind a finely perforated cover. They produce a very thin sound that can be enhanced audibly by enabling the pre-installed Dolby Home Theater software. The speakers basically fulfill our expectations. We had to listen to worse speakers in the past. If you do not like the sound, you can always connect external speakers or headphones to the device.
音箱
的IdeaPad N581的扬声器位于键盘上方的背后的微细穿孔盖。它们产生的非常薄的声音，可以提高可听通过使预装杜比家庭影院软件。发言者基本符合我们的预期。在过去，我们不得不听更糟糕的扬声器。如果你不喜欢的声音，你可以随时连接外部扬声器或耳机的设备。
Battery Life
Power Consumption
The IdeaPad N581-MBA4YGE consumed between 7.6 and 11.8 Watts while idling. Its consumption is slightly lower than that of Sony's Vaio VPC-EH3C0E/W (8.6 to 12 Watts) and HP's Compaq Presario CQ58-148SG (8.5 to 11.7 Watts). This difference was even greater during full load (Prime95 and FurMark run simultaneously). Thus, the IdeaPad N581's power consumption of 44 Watts is clearly lower than Sony's laptop (49.3 Watts) and HP's device (48 Watts). The same is seen in the medium load range (3DMark 06). Lenovo's IdeaPad N581 is satisfied with a power consumption of 30.2 Watts while HP's Presario CQ58-148SG consumes 34.1 Watts and Sony's Vaio VPC-EH3C0E/W drains 37.5 Watts.
耗电量
的IdeaPad N581-MBA4YGE消耗了7.6和11.8瓦之间，而空转。其消费量略低于索尼的Vaio VPC-EH3C0E/ W（8.6至12瓦）和惠普的Compaq Presario自由人CQ58-148SG（8.5到11.7瓦）。这种差异更加显着，在满负荷（Prime95和FurMark进行同时运行）。因此，，的IdeaPad N581的功耗为44瓦显然是低于索尼的笔记本电脑（49.3瓦）和HP的设备（48瓦）。同样是在中等负荷范围（3DMark 06测试）。联想的IdeaPad N581，功耗为30.2瓦，而HP Presario自由人CQ58-148SG是满意的功耗为34.1瓦和索尼的Vaio VPC-EH3C0E/ W消耗37.5瓦。
| Off / Standby | 0.1 / 0.3 Watt |
| Idle | 7.6 / 10.9 / 11.8 Watt |
| Load |
30.2 / 44 Watt |
   
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Key:
min: ,
med: ,
max: Voltcraft VC 940 | |
Battery Runtime
With 6:49 hours, the IdeaPad N581-MBY4YGE lasted the longest of the three comparison devices in idle mode. HP's Compaq Presario CQ58-148SG (6:01h) and Sony's Vaio VPC-EH3C0E/W (6:12h) clearly lag behind. Idle mode is ascertained via the Battery Eater Reader's test. The screen is set to minimum brightness, the energy-savings profile is enabled and the wireless modules (Wi-Fi, Bluetooth) are disabled. The IdeaPad N581 achieved a load runtime of 1:20h. Both other laptops lasted for six minutes longer. The Battery Eater Classic test is used for the load test. For this, we set the screen to maximum brightness and enable the high-performance profile and wireless modules.
One battery charge is enough to keep the Wi-Fi test running for 4:20h. There is not much of a time difference between the N581 and the CQ58-148SG (4:18h) or Sony's Vaio VPC (4:05h). Websites are automatically opened every 40 seconds in this test. The energy-savings profile is enabled and the screen's brightness is set to roughly 150 cd/m2. The IdeaPad N581 accomplished a runtime of 3:37h in the DVD test (CQ58: 3:51h, Vaio VPC: 3:11h) The DVD test is performed with disabled wireless modules. The screen is set to maximum brightness and the energy-savings or higher profile is used should the DVD not be rendered smoothly.
The battery life of all three laptops is comparable as they use batteries with similar capacities (HP: 47 Wh, Lenovo: 48 Wh, Sony: 45 Wh). If you are looking for the cheapest laptop with the longest battery runtime, you might take a look at Lenovo's G585. This laptop accomplishes a runtime of 8:40h in idle mode. The device is equipped with AMD's E2-1800 APU. However, we have to point out that the CPU part of the AMD APU is much weaker than the CPU part of Intel's Pentium B970.
电池运行时间
6点49小时，，的IdeaPad N581-MBY4YGE持续时间最长的三个比较在空闲模式下的设备。 HP Compaq Presario自由人CQ58-148SG（6:01 H）和索尼的Vaio VPC-EH3C0E/ W（6点12小时）显然落后。空闲模式是通过电池食阅读器的测试确定。屏幕被设置为最小亮度，节约能源配置文件启用和禁用无线模块（的Wi-Fi，蓝牙）。 N581的IdeaPad实现了负载运行时间为1:20ħ。这两个其他的笔记本电脑持续了6分钟的时间。食经典的电池测试使用负载测试。对于这一点，我们的屏幕设置到最大亮度，使高性能的个人资料和无线模块。
一次充电足以让Wi-Fi测试运行4:20ħ。没有太多的N581和CQ58-148SG（4:18小时）或索尼的Vaio VPC（4:05小时）之间的时间差。网站在这个测试中，每40秒会自动打开。能源节约启用配置文件和屏幕的亮度设置为约150 cd/m2的。在DVD测试的IdeaPad N581实现的运行时间为3点37分Ĥ（CQ58：3:51小时，VAIO VPC：3:11ħ）DVD残疾人士使用的无线模块进行测试。屏幕设置到最大亮度和能源节约或使用的DVD不顺利呈现较高的知名度。
所有三台笔记本电脑的电池寿命是可比的，因为他们使用的电池与的类似容量（HP：索尼联想47瓦，48瓦，45瓦）。如果您正在寻找最便宜的笔记本电脑的电池运行时间最长的，你可以看看联想的G585。这台笔记本电脑，实现在空闲模式下的运行时间为8:40ħ。该设备配备了AMD E2-1800 APU。然而，我们必须指出的是，AMD APU的CPU部分是远低于英特尔的奔腾B970的CPU部分。
Verdict
With the IdeaPad N581, Lenovo again introduces an affordable laptop that excels with its good money for value performance. The device provides enough power to satisfy the requirements of most users. However, you have to live with a contrast-poor screen like in almost every low-budget laptop. You can also opt for the IdeaPad N581-MBA4XGE, which is 50 Euros (~$65) cheaper, if you do not need Windows 7. The saved money could then be invested in a warranty upgrade. If you are looking for an even cheaper laptop, you should look closer at HP's Compaq Presario CQ58-148SG.
使用的IdeaPad N581，联想再次推出一个负担得起的笔记本电脑，凭借其良好的金钱价值表现出色。该器件提供足够的电力来满足大多数用户的要求。但是，您有生活的对比，几乎在每一个低预算笔记本电脑的屏幕差。您还可以选择的IdeaPad N581-MBA4XGE，这是50欧元（约65美元）便宜的，如果你不需要Windows7。然后，可以省下来的钱投资在保修升级。如果你正在寻找一种更便宜的笔记本电脑，你应该仔细看，HP Compaq Presario自由人CQ58-148SG。
