Battery Life, Power Use, Temperatures, and Noise

For battery life testing, we ran our standard three in-house tests. The first consists of surfing the internet until the battery runs down. We set Internet Explorer to load three web pages (including AnandTech.com), pause for 60 seconds, exit, and then reload those pages. The second test simply plays a DVD until the battery runs dead. For the third test, we loop the four gaming tests in 3DMark06. In all cases, we set the power profile to "Balanced" and set the display brightness at maximum brightness. The GPU on the P-6831 still consumes quite a bit of power, so turning down the backlight for the LCD won't help too much. However, you might be able to improve battery life by 20-25 minutes with a bit of effort (i.e. use the max power saving profile and turn down LCD brightness).

Related to battery life are the power requirements. We measure with the system plugged in, so some of the power saving features are not active. The numbers below will still give you an idea of how much relative power various tasks require.


Battery
Life

Battery
Life

Battery
Life - Gaming

System
Power Requirements

System
Power Requirements

System
Power Requirements

The Gateway system comes with an 86 Whr battery, in comparison to 95 Whr batteries on several of the other 17" systems and 65 Whr on the AVADirect and WidowPC laptops. The P-6831 places near the top of the battery life benchmarks, at least when compared to other gaming notebooks. Reducing the display brightness and performance mode should easily allow over two hours of battery life for web surfing. DVD playback is just over an hour and a half, so you could watch some shorter movies on a single charge. The gaming battery life falls behind several of the other notebooks, but then it appears that the GPU clock speeds don't throttle as far on the P-6831 FX. That's likely because the CPU isn't using a lot of power, relatively speaking.

Those worried about extremely high temperatures should be pleasantly surprised. While we won't go so far as to call the P-6831 a cool-running laptop, it doesn't get all that hot. After looping 3DMark06 for over an hour, we measured the following temperatures. The exhaust on the back left of the laptop was by far the hottest area, measuring 46-48C. While that seems high, all of that heat comes from the GPU, and the bottom of the laptop is nowhere near that hot. The bottom ranges in temperature from 26C to 36C, with most of the surface around 31C-33C; only a few hotpoints (right near the center under the Gateway label, presumably where the actual GPU sits) reach 35-36C. The palm rest stays at a cool 26-30C, and the keyboard is mostly in the 30-32C range, with a few areas (around RTY/FGH - again just above the GPU core) reaching up to 35C. Note that all of the testing was conducted in a ~21C environment; temperatures would naturally be higher if the ambient temperature increases.

One last item we would like to comment on is the noise levels of this notebook. Given the slightly less powerful GPU and the slower CPU, we figured the noise levels would be lower than other gaming notebooks. Compared to the Clevo M570RU, that's certainly the case; the maximum noise level of 42dB is about the same as the minimum noise level (41dB) of the Clevo. The GPU and CPU still require decent airflow, though, so even at idle noise levels never reach the point where we would call this notebook "silent". It fluctuates between 34dB and 36dB at idle, with the difference coming from the CPU fan spinning faster for short periods of time. At 100% CPU load, the noise stays at a constant 36dB. As soon as you load up any game, noise increases to 40dB initially and then usually reaches the maximum 42dB after a few minutes. Again, we have to give Dell credit, as even with SLI their XPS M1730 is nearly silent when idle (31dB).

Other Application Performance Closing Thoughts
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  • asusftw - Friday, March 28, 2008 - link

    asus g2p? what era are we in? benchmark the g2sg-a1 or the g2s-b2. don't use notebooks that are past their expiration date please.
  • pnyffeler - Friday, March 28, 2008 - link

    Ouch. :-)
  • kenbx84 - Friday, March 28, 2008 - link

    I like how these guys like to compare the outdated Asus G2P to this gateway as oppose to the more up to date G2Sg or even G2S-B2...

    Hey guys try comparing the latest notebooks with the latest notebooks please.
  • ap90033 - Sunday, March 30, 2008 - link

    Are you talking about this one? http://209.85.165.104/search?q=cache:nBTuWHg8-gQJ:...">http://209.85.165.104/search?q=cache:nB...p;hl=en&...

    If so 5200 in 3dmark06 isnt really close to 7000 that I get with the P6831FX...
  • JarredWalton - Sunday, March 30, 2008 - link

    Note that in order to compare 3DMark06 scores properly, you need to test at 1280x1024... that link only does so at the end and then scores a paltry 4715. For the 6831FX, you need to use an external LCD (which I did). 6820 is a respectable score, held back quite a bit by the CPU (which contributes something like 1/4 to 1/3 of the total points, I think).

    But really, who cares about 3DMark? We don't play that; we play actual games. Compared to the 8700M GT in the X205:

    Battlefield 2, Bioshock, Quake 4, Stalker, and Supreme Commander are roughly half the performance. Meanwhile Far Cry, the HL2 games, and Oblivion are about 2/3 as fast. So in tested games, the P6831 is usually at least 50% faster than the X205, and frequently twice as fast. I wish I still had an 8700M GT system so I could run some of the new games through the wringer, but regardless it's not looking pretty.
  • MrX8503 - Friday, March 28, 2008 - link

    "I like how these guys like to compare the outdated Asus G2P to this gateway as oppose to the more up to date G2Sg or even G2S-B2...

    Hey guys try comparing the latest notebooks with the latest notebooks please. "

    Reading is your friend. Theres a reason why they did this.
  • deshiboy - Monday, January 25, 2010 - link

    8690 HYA HYA!
  • jburgett - Friday, March 28, 2008 - link

    Frequently reviewers of laptops neglect to measure the heat radiating from the top and bottom of laptops. This can be a major factor in the actual use of a system. For example, I had a Gateway nx860XL that reached 52 deg C on the underside while sitting on a flat surface! Such hot temperatures prevent using it on your lap for even short periods. Further, the area under your left hand while gaming (the WASD keys) reached 45 deg after a long gaming session, and this was while raising the back of the laptop to provide maximum fan airflow!

    Please consider adding temperature measurements on teh top and bottom to your reviews. It would be very helpful, as the differences from one laptop to another are dramatic.
    Currently only notebookreview.com and notebookcheck.net provide temperature readings.
    Thanks for the review!
  • ap90033 - Sunday, March 30, 2008 - link

    Interesting point, its not important for me, I use the Ideazon Fang... Its way better than using a keyboard and makes this a non issue. I have used mine a lot gaming and surfing the net and never noticed but of course when gaming my fang gamepad allows me to play with no distractions. Actually for a gaming laptop I was suprised at how cool it runs...
  • Wolfpup - Friday, March 28, 2008 - link

    I'm wondering if this comes with a real Vista DVD like Dell's systems do (not no one else does) so you can reinstall it from scratch when you get it.

    It actually sounds like it does from the manual for the FX series, as it talks about reinstalling from the Vista DVD. Presumably if it didn't HAVE a DVD included, they'd at least mention "oh you have to buy it".

    I also wonder if this can run Folding @ Home whenever it's on. Sounds like maybe it can actually handle it, if 100% CPU utilization doesn't require it to ramp up the fans all the way.

    Overall, I hate the slow CPU, but even that's not much different from a lot of notebooks in the price range. I probably should have bought one during that sale (DOH!) But maybe I'll still pick one up...

    Oh, and to the person who said people reading Anandtech won't use this as their main machine...why not? I've got a pretty big backlog of games to get through, so I might be an exception, but I figure I can get at LEAST a year or two of use out of this before I start getting held back by the CPU and GPU. And the price is low enough that I can just figure I'll buy a new notebook or desktop in 1-3 years when needed, and it'll still be cheaper then buying something more expensive now.

    Actually another question...I wonder how getting the memory in dual channel mode would help performance? 3GB is beyond adequate, but I'd assume these newer systems still give up 10%+ performance when running single channel.

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