Battery Life

We don't have any comparison results for this section, though we hope to flesh out our laptop comparisons in the future with additional products. While it would be nice to get eight hours of battery life and high-performance gaming in a laptop, that won't be possible without much larger battery capacities (at least for now). We left everything set up with the default settings, which means the CPU can range from 1.0 GHz to 2.16 GHz depending on demand. NVIDIA's PowerMizer technology is listed among the features as well, and that should help to keep battery life up when you're not running 3D applications. Once you fire up a game, however, you shouldn't expect to get several hours of gaming from the 80 WHr battery.

For battery testing we plugged in the laptop until it showed 100% battery power and then ran three different applications until the system entered hibernation mode (3% battery life). DVD playback is pretty straightforward, and we started playing back a DVD with headphones plugged in to simulate typical use. Similar to DVD playback with a twist, we timed battery life while watching a DivX encoded movie, again using headphones. (The movie was the same as the DVD, encoded at full WS resolution.) We wanted to see if constant access to the DVD drive had a noticeable impact on battery life. Finally, to simulate gaming, we ran a continuous loop of 3DMark05 (the three game demos, not the CPU tests). We found that 3DMark05 generally uses a bit more power than most real games, so it should serve as a worst-case scenario.

Battery Life


Our suspicion that the DVD-ROM drive consumes a reasonable amount of power is proved true with the DivX playback result. If you're the type to encode your DVDs to DivX and leave them on your hard drive for easy retrieval, you can potentially increase battery life by as much as 28% according to our results. That also means you should have enough battery life to get through most current films, whereas the two hours of battery life may not quite make it to the end of some DVDs.

As for gaming performance, an hour and a half isn't terrible, but it's not that great either. You'll definitely want to keep the system plugged in if you plan on a lengthy gaming session. Although perhaps it's a good way to keep your gaming limited to 90 minutes or less at a time?

Battlefield 2 Benchmarks Closing Thoughts
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  • Schadenfroh - Tuesday, April 18, 2006 - link

    We got a thread going in the notebook forums about it if you guys want to join us:

    http://forums.anandtech.com/messageview.aspx?catid...">Text
  • Cullinaire - Tuesday, April 18, 2006 - link

    On the BF2 page:

    "(If you look at what should be a circular map in the top right corner of the screen while playing, you'll find that it's an eclipse, clearly showing that widescreen resolutions are running with the wrong field of view.)"

    Did you mean ellipse? Just wondering. Nice article. I'll get one when I win the lottery, otherwise I don't go to enough LAN parties to justify one of these :)
  • JarredWalton - Tuesday, April 18, 2006 - link

    Tired. Yes, ellipse. I must have misspoke originally.
  • Poser - Tuesday, April 18, 2006 - link

    I assume this means you use speech recognition software for dictating your articles? Which do you use, and care to share any opinions about it? Even just a pointer to another forum posting would be great (and probably less distracting to this thread). I haven't ran across anyone who uses it on a regular basis for real work before.
  • JarredWalton - Tuesday, April 18, 2006 - link

    Funny you should mention that, because I was planning on doing an article on the subject shortly. Not to spoil the surprise, but I used Dragon NaturallySpeaking version 8. I toyed around with the speech recognition in Microsoft Office, and frankly it's pathetic by comparison. You can probably guess that I have carpal tunnel problems, which is what led me to Dragon NaturallySpeaking into first place. I've been using it for about six months now, and while it still isn't perfect, it actually works quite well overall. Probably the best $150 I spent in quite awhile.

    Regards,
    Jarred Walton
    Hardware Editor
    AnandTech.com
  • nullpointerus - Wednesday, April 19, 2006 - link

    I used to get that intense, throbbing pain in my wrists after hours of typing. Then one Christmas I received a pair of typing gloves. They are tight (like spandex?) and have splints in them. At first I really hated them, but after using them for months I found that I no longer needed them.

    See, if you fight the material and the splints, you get a pain different from CTS but much more annoying and immediate, so your wrists are trained to assume the proper position when typing. Once I found that I didn't need the gloves anymore, I gave them to a friend who was suffering from the same problem.

    These are the kind I used:
    http://www.imakproducts.com/products/smart_glove.h...">http://www.imakproducts.com/products/smart_glove.h...

    A solid, natural keyboard with keys that depress easily; proper chair with good back a nd neck support and good armrests; good posture; correct input device height relative to your body, etc. also helped. There's no point in training your wrists if your computing environment doesn't allow you to keep them in the proper position.

    Then again, I don't know how badly you suffer from it or how much typing you have to do each day. Maybe someone else will find this post useful if you do not. :-)
  • JarredWalton - Wednesday, April 19, 2006 - link

    I may have to give that a try - the wrist supports I have help, but they haven't solved the problem by any means.
  • bob4432 - Thursday, April 20, 2006 - link

    carpel tunnel is not the only neurological condition you need to worry about when doing a lot of keyboard work. you also have muscle overuse syndrome, different types of dystonia (chronic muscles spasms) etc, so if you can get dragon working decently, go that route. your entire upper body will thank you. i may have to try out dragon again, i tried it 3-4yrs ago, or whatever else speech software was out there and it was pretty weak then....
  • gramboh - Tuesday, April 18, 2006 - link

    At 8.8lbs it's about the weight of a 17 inch Powerbook G4 so without seeing it I think it's portable. A MacBook 15 inch is 5.4lbs using the Core Duo CPU as well. I think this setup might be able to beat a MacBook in terms of performance which would be cool, because I like to see Apple lose at things, especially to Dell :). This is definetely a better gaming system than a MacBook with BootCamp running a measely X1600.
  • timmiser - Tuesday, April 18, 2006 - link

    I just bought an XPS M170 with the 7800 GTX Go and this looks like its pretty much exactly the same on the exterior. This replaced my Inspiron XPS notebook that had a 15.4" screen with the 3.2 GHz Prescott and Mobility Radeon 9800.

    With them both sitting on the table next to each other, the new XPS M170 is about a pound lighter and much thinner but amazingly with the bigger screen, the 17" XPS and the 15.4" XPS are the exact same height because the 17" XPS is much thinner it all equals out. They are also the same length (front to back) but the M170 is a couple inches wider. I am amazed that the overall size with the bigger screen isn't all that much bigger.

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