Battery Life

For battery life testing, we run all laptops at around 100 nits brightness. If you choose to run your LCD at maximum brightness, you may lose anywhere from 10 to 60 minutes depending on the laptop and the display. In the case of the Studio XPS 16, maximum brightness is 280 nits and uses 9W more power, so the impact on battery life is quite significant (see the idle chart below for reference).

We run several different battery life scenarios: Internet surfing (load several webpages using the wireless adapter every minute until the battery dies), DVD playback, x264 playback, and idle (maximum) battery life. For x264 playback, we copy a 720p file to the hard drive and loop playback using Windows Media Player Classic Home Cinema; we will include scores from other laptops, but it's worth noting that we did not have GPU accelerated x264 decoding enabled in previous laptop tests. We have battery life results for Blu-ray playback on laptops that ship to us with a Blu-ray drive. We've also included web surfing results (and DVD for the MacBook Pro) for the latest Apple MacBooks as a point of reference.

Battery Life

Battery Life

Battery Life

Battery Life

Battery Life - Idle

Battery life is nothing special, particularly when compared with similarly equipped notebooks. Purchasing the extended capacity battery does allow you to reach over three hours of battery life, but the same can be said of other notebooks. You can also see what happens if you turn up the display brightness. At maximum brightness sitting at the desktop, you only get 108 minutes of battery life. Perhaps that's just the price we have to pay for the beautiful LCD.

As we've mentioned in the past, Apple's MacBook and MacBook Pro provide an almost untouchable amount of battery life. To give you a true apples-to-Apples comparison, we've calculated the amount of battery life you get per Whr (Watt Hour) of battery capacity:

Battery Life

We can only hope that Windows 7 will help improve the battery life situation and level the playing field. However, we also suspect that the hardware manufacturers could be doing a lot more to improve battery life on their laptops. The closest we have come to matching the Minutes/Whr score of the MacBooks was with an ASUS N10JC netbook, which isn't even on the same continent in terms of performance. Apple is getting over six minutes per Whr, and most similarly equipped Vista notebooks are luck to come close to 3 min/Whr. Note that testing a MacBook with Vista using Boot Camp also cut the Apple battery life roughly in half.

General Application Performance Power, Noise, and Temperatures
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  • bowerfind - Thursday, September 10, 2009 - link

    In your review of the Dell XPS16 Studio notebook, the RGB LED 1080p was highly recommended. Dell offers both a 15.6" and a 16.0" edge to edge glass screen. Dell assures me that both of these displays are of equal quality. Which of these 2 displays was examined in your review and do you agree that they are both of equal quality? Reply
  • JarredWalton - Thursday, September 10, 2009 - link

    The display tested was a 1080p 16.0" model, so I don't know about the 15.6" LCD. Reply
  • arst - Saturday, August 01, 2009 - link

    just want to know is there any gamut data between 13~14 inch display laptop? this article show only 15 inch upper laptops.. Reply
  • tOM Trottier - Monday, August 03, 2009 - link

    Alas, this doesn't cover the wide gamut laptop screens from Sony (on Vaio AW series) nor Lenovo (Thinkpads with "Flexview"). The Sony, in particular, is supposed to have about ~136% of Adobe RBG gamut.

    tOM
    Reply
  • arst - Monday, August 03, 2009 - link

    thx for reply
    alright, I think i should give up to choose 13~14 inch screen laptoop
    does anyone know any good 15 inch one?
    Reply
  • griddley - Sunday, July 12, 2009 - link

    Hmmm.. looks like this thread could be dead. But thought I'd ask anyway: Anyone get this sxps 16 with the 1G GPU option? I am concerned about an increase in system noise over the 3670.
    I want to replace a first-gen xps whose fans run all. the. time. (and I clean them regularly!)
    Reply
  • mlarma - Wednesday, April 22, 2009 - link

    I got one from the Dell outlet store. Let me say that these things are hot tamales there and you'll need to keep tapping refresh or whatever on the filter for the laptop type and when you see one add it to the cart then decide if it is what you want. If not, remove it. Took me an hour of hitting refresh to get the following for $1269:

    Studio XPS 16
    - T9550 (2.66GHz, 6MB Cache, 1067MHz)
    - 4GB (2x2GB DDR3, 1067MHz)
    - 500GB 7200RPM drive (with fall sensor)
    - DVD-RW
    - 1920x1080 screen (this of course was a must have)
    - 5100 wifi card option
    - Bluetooth
    - 2.0MP Camera with facial recognition
    - 6 cell battery
    - Vista Ultimate 64-bit/SP1
    - Standard 1 year warranty, on-site after on-phone diag

    I'm super stoked. Plan on having dual boot with Linux and Vista. I've toyed with a few Linux flavors. Anyone with one of these laptops have a preference?
    Reply
  • CStyles357 - Tuesday, April 21, 2009 - link

    This should have been compared with the HP HDX 16-1140US Notebook PC - $1,149.99
    Intel Core 2 Duo P8600 2.4GHz Dual-Core X64-Bit Mobile Processor
    4GB DDR2-800 (2x 2GB) PC2-6400 (400MHz) Cas 5 Latency, 5-5-5-15 Timing Memory Max up to 8GB
    Seagate Momentus ST9500325AS 500GB, 5400RPM, 8MB Cache, SATA 3.0Gb/s
    HardDrive w/HP ProtectSmart HD Protection
    Sony NEC Optiarc AD-7543A LightScribe Super Multi 8X DVD+R/RW
    w/Double Layer Support Multimedia Drive
    Samsung 16.0" WSXGA + High-Definition HP Ultra BrightView Infinity Widescreen Display (1920x1080)
    NVIDIA GeForce Go 9600M GT Graphics w/2302MB Shared Video Memory
    (500MHz DDR2 GPU Clock, 512MB, 128Bit, 65nm), DirectX 10, HD Pure Video,
    128bit FP – Graphics Processing Unit
    Realtek RTL8168/8111 Integrated 10/100/1000Mbps BASE-T Ethernet LAN
    Wireless 802.11a/b/g/n integrated WLAN
    Intel WiFi Link 5100AGN w/Bluetooth 2.0 Wireless Technology
    5-in-1 integrated Digital Media Reader
    Altec Lansing Dolby Home Theater Speakers w/Sub-Woofer & Integrated Digital Microphone
    HP Imprint Finish with Integrated 1.3 Megapixel Webcam & Fingerprint Reader
    3 USB 2.0 ports + 1 eSATA/USB port

    Reply
  • 7Enigma - Tuesday, April 14, 2009 - link

    Thanks again for including "lower/higher is better" in the display portion of the review. Makes browsing that section much easier for some of us.

    I did have a question as to why it seems the Apple products only show up in the benchmarks they do well at (typically the battery life). Where is the x264 benchmark and the rest? I know some of the benchmarks may not have Mac OS compatibility but is just seems like they are only in benchmarks they do well at.
    Reply
  • JarredWalton - Thursday, April 16, 2009 - link

    Well, I didn't test the MacBooks - that's Anand - and the different OS severely limits the amount of comparing we can do. Playing DVDs or surfing the 'net isn't all that different on OS X, Linux, etc. so we can compare that aspect. Worth note is that MacBook battery life under Vista drops in half... driver problem, or the underlying OS? You decide. Reply

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