Power Requirements

Power requirements with a laptop plugged in don't necessarily reflect power requirements when a laptop is on battery power. In particular, high-end GPUs run at lower maximum clock speeds when using the battery. Keep this in mind when looking at the following numbers. We test under idle conditions, with a 100% load placed on the CPU via Folding@Home SMP, and finally at maximum load by running FAH SMP at the same time as we loop 3DMark06 (at the native LCD resolution).

System Power Requirements

System Power Requirements

System Power Requirements

Our power measurements are with the LCD at maximum brightness, which isn't necessarily a fair way of doing things as some LCDs are much brighter than others. Unfortunately, we don't have most of the laptops around to retest. You can see that the Dell Studio XPS 16 uses 9W more power running at maximum brightness, which represents an increase in power draw of 33%. We verified that 9W figure on the other tests, but we didn't include those results in the charts. We don't know if the RGB LEDs inherently use more power than regular laptop backlights, but obviously increasing the backlight intensity requires more power. Luckily, you can often get by running the XPS 16 LCD at around 30-40% brightness (100-130 nits).

Noise Levels

We also ran noise testing using an SPL meter at 24" under the same conditions as our power tests.

System Noise Levels

System Noise Levels

System Noise Levels

The Studio XPS 16 does reasonably well in terms of noise levels, almost reaching the noise floor of our testing environment (around 28 dB). Once you start to put a load on the system, it does get a bit louder, and extended gaming will usually reach maximum noise levels after a few minutes. The system also takes a while to quiet down after you remove the load, which is likely influenced by the top panel partially blocking the exhaust port.

Temperatures

We didn't create any charts, but we wanted to give a quick rundown of the temperatures you might expect from the Studio XPS 16. We placed a maximum load on the system for 30 minutes and then measured temperatures, so these results are something of a worst-case scenario. Then again, the testing environment was only 67°F, so in warmer conditions it might not be as difficult to make things toasty. We have heard some complaints from users about the XPS 16 getting excessively hot; we wouldn't go that far, but it definitely doesn't run cool to the touch all the time.

We measured temperatures of ~45°C at the exhaust, which isn't too bad. However, temperatures on the bottom of the laptop range from 35° to the 45° as well, with large portions of the bottom measuring above 40°C. The keyboard and palm rest weren't quite as hot, ranging from 30° to 40°C with most of the keyboard staying under 35°. Just to put things in perspective, those temperatures are higher than what we measured on the Toshiba X305-Q725, a result of the smaller chassis with fewer fans.

Battery Life Display Quality
Comments Locked

79 Comments

View All Comments

  • Nfarce - Friday, April 3, 2009 - link

    I have a 3 year old 17" Inspiron E1705 and still love it. When new, it played older DX9 games like Return to Castle Wolfenstein pretty well with a 2.0GHz Centrino and ATi X1400.

    It has the glossy screen which really helps increase the contrast appearance and really doesn't affect me because I don't use the laptop outside or next to a window. Yes, fingerprints and smudges are an issue even being as careful as possible. However, it's a small price to pay for a better picture IMO. I just don't like the "matte" screen on my Sammy 22" LCD on a gaming rig - and I think that is even harder to clean and get smudges off. Something about the grooves or something in the cover.

    Finally, what's up with all these new weird LCD screen sizes these days? I use a 15.4" laptop for work and it's just too small by itself when not connected to a docking station with a monitor. And then we have the new 23" LCDs out now, and the 25.5" LCDs...
  • Digobick - Friday, April 3, 2009 - link

    Is the 9-cell battery removable (meaning, can you take it off if you don't think you'll need it)?

    Also, have you weighed the laptop with the 9-cell battery installed? I'm curious to know how much it weighs with both the 9- and 6-cell batteries installed.
  • JarredWalton - Friday, April 3, 2009 - link

    The 9-cell battery weighs a bit more than the 6-cell, probably .2 or .3 pounds. I don't have a scale that can measure such weights accurately, unfortunately, so I use the manufacturer specifications.

    As for the first question, the 9-cell battery is a replacement for the 6-cell; you can only use one or the other. The 9-cell is larger and raises the back of the laptop, with a .5 to 1 inch protrusion on the bottom where the 6-cell battery is flat.
  • andrezunido - Friday, April 3, 2009 - link

    Would it be possible to have the figures for the macbook pro 15'' color gamut to compare with the Dell XPS 16?
  • jabber - Friday, April 3, 2009 - link

    You could at least have wiped the laptop down before taking the pics!

    That just looks sloppy. Yo did get a cloth after all.

    Unless of course it was a scratched/battered review model.
  • JarredWalton - Friday, April 3, 2009 - link

    Actually, it isn't messy at all and those aren't scratches... at least not on the laptop. That's just a reflection of the white paper I have around my photography area. The laptop surface is extremely reflective, so I'm happy it's just reflecting paper and not my face, camera, etc.
  • jabber - Friday, April 3, 2009 - link

    Hmmmmmmm still looks like the blue haze of greasy fingerprints round the edges.

    Just doesnt look right to me.

    Please can we ditch glossy plastics now?
  • ksherman - Friday, April 3, 2009 - link

    Apple stopped offering the choice on the MacBook Pro (and now indeed all their current computers/displays) back in November. It SUCKS. At least its a sheet of glass (supposedly) not a glossy coating.
  • Pirks - Friday, April 3, 2009 - link

    ksherman, check your facts before posting please. This is from www.apple.com online store:

    MacBook Pro comes with a high-resolution 1920x1200 pixel LED-backlit display. Choose a standard glossy display that lets you view graphics, photos, and videos with richer color and deeper blacks, or an optional antiglare display.

    MacBook Pro 17-inch Hi-Resolution Glossy Widescreen Display
    MacBook Pro 17-inch Hi-Resolution Antiglare Widescreen Display [Add $50.00]

    See, Apple still offers antigare option no matter what you say.
  • erple2 - Tuesday, April 7, 2009 - link

    Both of you are simultaneously right and wrong. The 17" Macbook Pro can be had with a either a glossy or non-glossy screen. The 15" Macbook Pro comes only with a glossy screen.

Log in

Don't have an account? Sign up now