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).

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  • teknomedic - Sunday, March 30, 2008 - link

    Hey, great review... I read it yesterday... I bought the P-6831 today... hope your happy, cause I am, lol.

    Anyway... In short order I'll probably be upgrading the proc to the T8300 and getting a matched set of 4GB RAM and then installing Vista 64bit.

    Just wondering (since I haven't opened the box yet and am still thinking about keeping it)... how are the Vista 64bit drivers for this lappy? Will I beable to find all the drivers I need or will I need to run 32 for a while until they sort those out?

    Thanks again!
  • Che - Sunday, March 30, 2008 - link

    Well, I stated installing 64-bit Vista about 24 hours after buying the laptop. Used a 64-bit disc and the laptop's activation key with no issues. As for drivers, most of the drivers are 64-bit aware (even if they are only listed as 32-bit). Took me a few hours but got it up and running great. IMPORTANT: Use the Gateway Recovery Center program and make a backup Drivers and Applications CD. Was very useful in reinstalling the drivers (many on the gateway site don't want to work right)

    Only drivers hard to find were: modem and nvidia.
    For the modem I used the following: http://www.notebookforums.com/thread212673.html">http://www.notebookforums.com/thread212673.html
    Nvidia I used the following: http://forum.notebookreview.com/showthread.php?t=2...">http://forum.notebookreview.com/showthread.php?t=2...

    Hope that helps.
  • teknomedic - Sunday, March 30, 2008 - link

    that's awesome info... thank you... I really want to move to 64bit since that's what I'm running at home. Thanks again!!
  • teknomedic - Sunday, March 30, 2008 - link

    ^^^ oh, and also... futher down the road, will I be able to upgrade the video as well? It also looks like if I did that, I'd have to rip the lappy apart?
  • win32asmguy - Sunday, March 30, 2008 - link

    Sorry but the 8800M GTS is soldered to the motherboard, roughly under the number pad area of the keyboard. That is one of the reasons why this machine is thinner than the Clevo M570RU-U clones that are out there.
  • JarredWalton - Sunday, March 30, 2008 - link

    I didn't actually check to see if the GPU was soldered on or not, but it wouldn't surprise me to find that's the case. Even if it is an MSM module that can be upgraded, it's highly unlikely you'll be able to do so. Just ask Dell XPS owners and Alienware m9750 owners how many GPU upgrades they've received over the years. Anyway, the GPU would be under the left side of the keyboard - the CPU is under the number keypad.
  • JarredWalton - Sunday, March 30, 2008 - link

    Regarding video drivers, you have to get the current drivers from Gateway or try hacked drivers from LaptopVideo2Go. In the case of the latter, you will almost certainly get lower performance. Right now, Gateway doesn't have 64-bit GPU drivers (or 64-bit drivers for anything else) on their website. You can get around everything but the GPU and potentially sound drivers.

    I would wait for the 64-bit upgrade until NVIDIA releases their next "rapid driver update" mobile drivers, and see if they support the Gateway FX laptops and if there's a 64-bit version. I'm betting yes on 64-bit, but in talking with NVIDIA they *just* received their Gateway systems for validation testing, so they may or may not make it into the next driver release. They will be in the release after that almost certainly, but that's ~4 months out.

    The other question of course is whether you even need to go 64-bit and 4GB right now. I don't think so, particularly if gaming is your major concern. 32-bit is still better overall, IMO... maybe in another year 64-bit will begin to make an impact.
  • teknomedic - Sunday, March 30, 2008 - link

    Thanks for the replies... too bad on the video considering I have a 5 year old laptop that allowed me to upgrade the video... and I'll wait on the 64bit drivers then. I'm already running 64bit vista at home and gaming too!... I've not had any issues beyond new PC trying to run old games... but that's what my WinXP and Win98 machines are for. ;)
  • Che - Saturday, March 29, 2008 - link

    Just FYI... I received this laptop today (and love it). I have the p-6831FX model and it came with (according to Vista) a T5550 CPU @ 1.83 GHz (not T5450 @ 1.67 GHx). I just checked it using CPU-Z and it says T5600 @ 1.83 GHz. Any ideas?? or did I just get lucky? Of course i'm not complaining, lol.

    The sticker on the palm rest states T5450. I did order mine off ebay, but it was still sealed and new in the box as was stated in the auction.
  • Dgacioch - Sunday, March 30, 2008 - link

    mine has the 1.83ghz T5550 as well, just bought it yesterday. Updated the video drivers and ran 3dmark 06. pretty respectable 7450 score, so at least a little improvement over the t5450. Ill be running some more games on it tonight to get some better impressions, but so far performance seems quite good even with the gimped cpu.

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