Ivy Bridge Ultrabook Battery Life and Thermals

So far, we’ve seen pretty much what we expected from Ivy Bridge Ultrabooks: moderately to slightly faster CPU performance compared to the first generation Ultrabooks, and a bigger step up in graphics performance. This matches up quite well with our experience of quad-core Ivy Bridge and the ASUS N56VM, but where things took a turn for the worse was in battery life. Many expected Ivy Bridge to be a significant step forward for laptop battery life, but at least on the N56VM we didn’t see that. What about ULV Ivy Bridge? Is it better, the same, or worse? Check out our results:

Battery Life - Idle

Battery Life - Internet

Battery Life - H.264 Playback

Battery Life Normalized - Idle

Battery Life Normalized - Internet

Battery Life Normalized - H.264

In terms of pure battery life, the Ivy Bridge prototype is good for nearly six hours of movie playback, close to eight hours of Internet surfing, and over 8.5 hours of idle time. It comes close to the top of our charts, though we could point out that the similar ASUS UX31E Sandy Bridge Ultrabook bests it in every category. Then again, ASUS has done very well in battery life comparisons for most of their laptops. Compared to the Acer S3, the IVB Ultrabook comes out ahead in Internet and behind in the other two disciplines; it does better against the Toshiba Portege Z830, Dell XPS 13, HP Folio 13, and matches or exceeds the Acer M3. Overall, given the improved performance, battery life looks to be similar or slightly better than Sandy Bridge Ultrabooks, which is quite acceptable.

We did run another battery life test looping 3DMark06 with the Balanced power profile and the IGP set to Balanced performance. Under those conditions, the PUB-RD Ultrabook lasted 107 minutes, which isn’t bad for that punishing workload.

As for thermals, this isn’t a production Ultrabook so these results aren’t particularly useful. Still, we ran our usual CPU+GPU stress test and here’s the HWMonitor screen capture:

Thermals are reasonable under load at 79/80C, and most of that heat is right in the back-middle section of the chassis, so you’re not as apt to notice if you’ve got it resting on your lap. Along with the heat, let's quickly discuss acoustics.

The IVB Ultrabook is pretty much silent and registers well under the noise floor of our testing equipment during idle/light use, though the fan may occasionally spin up. Start running a few applications and depending on how hard they hit the CPU/GPU—and for how long—you’ll get a bump in noise to around 35dB. Under our stress test, which you’ll also get if you play any moderately demanding game or do some CPU intensive tasks, the Ultrabook becomes far more audible at 43dB. Again, given the not-for-resale nature of the system, it’s not something we’re particularly concerned with.

LCD Analysis - Contrast

LCD Analysis - White

LCD Analysis - Black

We’ve also run just a couple of the LCD tests; the LCD is the same one used in the ASUS UX31E, and the results are similar. You get a potentially bright LCD but with mediocre contrast and TN-quality viewing angles. Since this isn’t for sale, that’s perfectly acceptable, and given the choice between this panel and the 1366x768 junk so many Ultrabooks have shipped with, we'd definitely take this as an upgrade.

Ivy Bridge Ultrabook Gaming Performance Conclusion: A Good Step Forward for Ultrabooks
POST A COMMENT

64 Comments

View All Comments

  • ananduser - Thursday, May 31, 2012 - link

    I'm going to chicken out, out of this one :) Reply
  • Hector2 - Thursday, May 31, 2012 - link

    Jarred is spot on. There's a mobility review on another tech website that shows how badly Llano's performance dives when fitting it into the lower TDP platform as compared to IVB. Reply
  • ssiu - Thursday, May 31, 2012 - link

    So what is the holdup in getting 17W mobility Trinity review? Didn't AMD announce the 17W part at the same time as the 35W part? (Unlike Intel who announced the quad Ivy first, and 17W part was under NDA until now.) Reply
  • JarredWalton - Thursday, May 31, 2012 - link

    Getting hardware. No one is shipping the LV/ULV Trinity stuff yet, and AMD didn't send out a prototype with one or both of those chips. They may not be under NDA, but they're not available for purchase anywhere that I know of. Reply
  • R3MF - Thursday, May 31, 2012 - link

    "Given the 17W and 25W TDP on the A6-4455M and A10-4655M, they could easily fit in similar sized laptops (e.g. HP’s “Sleekbooks”). "

    Unfortunately HP are being utter cretins and only offering Trinity in the 15.6" Sleekbook, and not the 14" version.

    WHY!
    Reply
  • Spunjji - Thursday, May 31, 2012 - link

    Because Intel, duh. :/ Reply
  • R3MF - Thursday, May 31, 2012 - link

    i'm not sure that logic applies.

    they allow the 15.6" Sleekbook to roll with an AMD APU.........................

    but why not the 14" Envy 4!
    Reply
  • kallogan - Thursday, May 31, 2012 - link

    So ULV gpu base clocks are half of regular core i7 HD 4000. Not surprising they are not performing very well.

    On the cpu side it's pretty awesome. I mean Max dual core turbo is 3,0 ghz for the highest ulv cpu. I guess it's possible to run on turbo forever if the cooling system allows it. Too bad it's only BGA.

    I don't know if there is 17 inches notebooks with ulv on board. Saw some 17 inch sitting at 10-15W while idling even with regular core i5. Would love a low power 17 inch.
    Reply
  • JarredWalton - Thursday, May 31, 2012 - link

    The HD 4000 ULV clocks are interesting. Base clocks are very low, but maximum clocks are quite high. WIth better cooling and configurable TDP (e.g. TDP Up or whatever it's called), it's possible there will be Ultrabooks that manage to get within 10% of the quad-core HD 4000 for graphics performance. However, Intel is only guaranteeing a rather low 350MHz iGPU clock, so in practice I bet average gaming clocks will be in the 700-900MHz range. Reply
  • IntelUser2000 - Thursday, May 31, 2012 - link

    If there's one thing Apple is clearly ahead is managing thermals. Macbook Air's graphics performance is pretty darn close to top performance. Reply

Log in

Don't have an account? Sign up now