This is where I think the VivoTab RT really distinguishes itself. If you were to ask me for one reason to buy the ASUS over Surface, this is it. The tablet is quoted as having similar battery life to Surface actually, even though it has a smaller 25Wh battery (Surface RT has a capacity of 31.5Wh, but both manufacturers claim 9 hours of battery runtime.) The higher power efficiency claim is likely due to the smaller display. I saw just under 8.5 hours in our web-browsing test, and a hair over 10 hours in our HD video playback test. These were a bit lower than what we’ve seen from the 2012 iPad, Transformer Prime, and other recently tested devices, but dead on with the Transformer Infinity and not too far off the pace set by the others.

Web Browsing Battery Life

Video Playback - H.264 720p High Profile (4Mbps)

And anyways, when you toss in the integrated 22Wh battery in the docking station, you’re looking at nearly 14 hours of battery runtime in light-load workflows. It’s awesome. Truly all-day computing, something that Surface and the iPad come close to but can’t really match. 

Tegra 3 and Windows RT: Performance ASUS VivoTab RT - The Cameras
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  • AahzNotOz - Tuesday, October 23, 2012 - link

    One thing I haven't seen discussed about RT is will it play the Windows extracted Digital Copy movies you sometimes get with Blu-Ray? I know Win 8 Pro slates should be able to play them fine, but how about Win RT?
  • KineticHummus - Tuesday, October 23, 2012 - link

    Hopefully this thing can play back high profile H264 like what most people use for MKV's! I'd love to be able to take some 720p anime on the bus with me. None of the 10 inch android tablets are too interesting to me, and the nexus 7 is too small. The iPad is out of the question, it cant play my files.
  • Urizane - Tuesday, October 23, 2012 - link

    High profile H.264 in an MP4 container on an iPad...sure. I'm guessing you're just not thrilled about burning in subtitles. As far as Windows RT goes...I'm guessing MKV support is going to have to come by way of a "Modern UI" (Metro) app playing MKVs back in software (slow) rather than through the hardware accelerator. I only say that, because messing with the core components (e.g. adding a DirectShow filter) is probably not allowed out of the box, and any .AX file would have to be compiled for Windows on an ARM CPU anyway. In such a case, you're still better off with H.264 in an MP4 container, because that's guaranteed to work. The same tricks used on Windows 7 for hardware playback of MKV streams should still work in Windows 8 Pro. You might need to lean in that direction if you have a complete aversion to demuxing your MKVs and muxing them into MP4s.
  • frozentundra123456 - Tuesday, October 23, 2012 - link

    Sorry, but I guess I am not that familiar with Win RT. What can you really do on Win RT? I mean if it doesnt run x86 apps, does it run android apps, or just apps from the microsoft store?
    It seems like kind of in limbo to me. TBH, I really hate Android. Hundred, thousands, whatever of apps, but I have yet to find any that are useful and work well. The few useful apps that I have tried tend to have some fatal flaw such as being frustratingly slow, locking up. crashing, etc.
    So if you cant run x86 apps, how is this an improvement?
  • Roland00Address - Wednesday, October 24, 2012 - link

    When Windows RT launches there is going to be about 3000 apps in the Microsoft store.
    This will change with time, remember if an app is developed for the Microsoft store it will work on windows rt or windows 8 regardless of the processor in use.

    Windows 7 phones launched with about 2,000 apps, it had 20,000 apps 6 months later, 40,000 apps 12 months later, and now has over a 100,000 apps.

    You are going to see a similar or faster app development for windows 8 for the fact more people are going to use windows 8 then you are going to see people using windows 7 phone.
  • horibatech - Tuesday, October 23, 2012 - link

    I dont know if it just because I have heard you talk on the podcast, but I love the 'tone' if your review. All the Anandech respectability with some Vivek flair. It's up to you, Anand, and the comments section, but I for one appreciate your candor and actually putting you opinion on the line. Keep up the good work and stay on the podcast!
  • Death666Angel - Friday, October 26, 2012 - link

    I think I'll wait until 2013 with new ARM and Intel architectures. Just feels like it is "too early" for IVB/CortexA9 Win8/RT. Haswell and A15 should do much to help with performance/battery life.
  • BlueInAtlanta - Monday, December 31, 2012 - link

    This device is the opposite of sleek. There's just too much machine around the edges and looks outdated. Still, I use it to sketch design ideas for my graphic design firm here in San Francisco. The tablet's nice display and its compatibility with AT&T's 4G LTE make it a very competitive model despite the looks.

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