日历

十二月 2020
周一周二周三周四周五周六周日
 << < > >>
 123456
78910111213
14151617181920
21222324252627
28293031   

公告

谁在线?

成员: 0
游客: 4

rss Syndication

02 10月 2018 - 21:55:33

IBM ThinkPad T60 Battery all-laptopbattery.com

Laptops promise anywhere from 15 to 24 hours of battery life, but you’ll be lucky to get 10 hours. Those estimates aren’t wrong, and there’s no mistake: Manufacturers choose the most unrealistic benchmark with the highest numbers. All PC laptop manufacturers trumpet their overly optimistic numbers because they have to. Everyone else does it. If one manufacturer is realistic and advertises 8 hours of battery life under regular use while other manufacturers advertise 15, that one honest manufacturer will get overlooked.That’s obvious, of course. The real question is: How do laptop manufacturers get away with it?Manufacturers aren’t lying—well, some of them might be, but they generally aren’t. Those unrealistic battery life numbers come from a real benchmark, and they’re couched in weasel words.

If you look close, you’ll see the words “up to” before the battery life estimate. The manufacturer doesn’t promise 16 hours of battery life; it promises “up to 16 hours.” You’ll get 16 hours in the ideal, perfect circumstances—not under regular PC use.These weasel words are common in all sorts of advertising. A store that says you will “save up to 50%” on your purchase isn’t lying even if you save only 3%. An internet service provider that says you’ll get “up to 50 Mbps” is technically telling the truth even if you get only 30 Mbps. That’s why there’s a good chance you aren’t reaching the internet speeds for which you’re paying.The words “up to” aren’t a license to make up numbers out of thin air. Otherwise, manufacturers would say you’d get “up to a million years” of battery life. They need real numbers, and they get them from a single ideal benchmark that doesn’t represent real-world usage.

Here’s a secret: It’s all about video playback. Manufacturers start playing video on the laptop and time how long it takes for the laptop’s battery to die. They just let a video play until the laptop dies, and that’s it. They might disable background features and set the screen brightness to lower than normal levels, too.Constant video playback isn’t representative of regular use. Who is going to sit down with a laptop and watch 16 hours of non-stop video without doing anything else?Manufacturers don’t care whether this represents your experience or not. They use this benchmark because it produces the longest battery life.Modern laptops (and smartphones) use hardware-accelerated video decoding. The laptop has special hardware in its graphics processor unit (GPU) that efficiently decodes the video while using as little power as possible, keeping CPU usage down. For example, when you play an MP4 video—even if it’s on a website or in an app—this kicks into gear and saves you power.

This is a great feature. It helps save battery life and keeps your laptop (or smartphone) running cool while you watch videos. However, manufacturers abuse it by using this number to boast about battery life. Anything else—whether it’s browsing a single website or just writing a document in Microsoft Word—will use more battery power than playing videos.PC manufacturers often benchmark battery life using Windows 10’s included Movies & TV app, which is always set up to use the PC’s hardware acceleration, if available. This feature is not available in every video player, and may not always be enabled by default if it is. For example, you might need to enable hardware acceleration in VLC if that’s your preferred video player.

Rather than relying on manufacturer benchmarks, it’s best to find independent reviews of the laptops you’re considering buying. Reviewers benchmark laptops under a variety of scenarios, so you can see what the battery life will look like under a simulated web browsing test that’s more indicative of normal, day-to-day use.For example, while Microsoft touts up to 17 hours of battery life on the Surface Book 2, Anandtech found it lasted for about 9.7 hours while browsing the web. That’s still a great battery life, but it’s nowhere near 17 hours.We don’t want to single Microsoft out here, either. Every PC manufacturer uses these exaggerated numbers to boast about battery life. Microsoft is playing the same game everyone else is.

Perfect Battery Life Estimates Are Impossible
Battery life is always hard to estimate. Even while you’re using a laptop, Windows might go from saying you have five hours left to only two hours depending on what you’re doing.That’s because performing more demanding activities on your laptop increases power consumption. A laptop won’t use much power while it’s just playing hardware-accelerated video on low brightness but increase the brightness level, and it’ll draw more power. If you start a demanding task that requires CPU power, it will draw even more power.That’s the real problem. Laptop battery life varies dramatically depending on what you’re doing. Manufacturers have decided to take the most unrealistic number they can find, but there’s no single battery life estimate that would work for everyone. However, a battery life test that simulates normal web browsing would be much more accurate and useful for most people.

Whether you're buying an entire fleet of notebooks for your employees or just looking for a single productivity system for yourself, you'll want a business laptop that's durable, powerful and easy-to-use. The best business laptops outdo their consumer-focused counterparts by offering better security, stronger build quality and a superior typing experience. These are our favorite business laptops right now.Lenovo's ThinkPad X1 Carbon is the Maserati of business laptops, a sleek and stylish system with plenty of power under the hood. At 2.49 pounds, this 14-inch laptop can go anywhere, but it still finds room for a full suite of ports and enough battery capacity to provide over 11 hours of endurance.

The 2018 version of the X1 Carbon, which is technically the "6th Gen" of this product, ups the ante by adding a quad-core, Intel Kaby Lake-R CPU and one of the most gorgeous screens we've ever seen on a laptop. The optional, 2K HDR display rivals the OLED screens we see on top phones as it reproduces 199 percent of the sRGB gamut and provides up to 500 nits of brightness.
The HP EliteBook 840 G5 is the ultimate blend of style and substance for business users. This slick aluminum notebook is attractive and durable, packs a vibrant 1080p privacy screen that blocks prying eyes, and delivers speedy performance via its Core i7 processor and 16GB of RAM. Splurge for the $2,295 config if you can, as it offers a much better display and adds in a webcam.

Even though it's not explicitly an enterprise machine, the Surface Pro's combination of power, portability and flexibility is still better than any other detachable in both the consumer or business world. The new and improved magnets on the Type Cover offer even more stability for use on your lap and new 7th-generation Intel processors offer significantly better performance than previous Surfaces. On top of that, updates to Office 365 have brought all the important sketching and annotation features from OneNote to Word, Excel and Powerpoint, so you can diagram and collaborate even better than before.If you want your business laptop to outshine those around you, then pick up the ThinkPad X1 Yoga. This 2-in-1 has a gorgeous 2K HDR screen that is among the most colorful we've ever seen. The laptop also features an elegant Mil-Spec tested design and its 8th Gen Intel processors offer excellent performance. If you're worried about privacy, the X1 Yoga comes with a slider on the webcam, so you can ditch the tape.

If battery life is your priority, Lenovo's ThinkPad T480 is the laptop to get. This notebook lasted a stunning 17 hours on our battery test, which, combined with its strong Core i5 processor and Nvidia MX150 GPU, offers tons of muscle for a full workday and then some.The Precision 3530 is a beast inside and out. This 15-inch workstation has a durable MIL-STD-810G chassis, a blazing Intel Xeon processor and Nvidia Quadro graphics and a long 8-hour battery. Factor in its comfortable keyboard and loud speakers, and you've got a big and beefy business laptop ready to handle anything you throw at it.

Admin · 43次阅读 · 发表评论

全文链接

http://kriterium4.huarenblog.com/uUOoI-b1/IBM-ThinkPad-T60-Battery-all-laptopbatterycom-b1-p365.htm

评论

目前这篇文章没有评论...


发表评论

新评论状态: 发布





您的URL将被显示。


请输入图片中的代码


评论文字

选项
   (在cookies中保存名称、电子邮件和url)