Battery Life

The Transformer Book T100 features an integrated 31Wh battery. As the keyboard dock doesn’t include an extra battery, that’s all you get. The good news is that Intel’s Atom Z3740 is built on the company’s first 22nm SoC process and it’s paired with LPDDR3. At least on the silicon front, the T100 should be fairly power efficient. Granted there are still the PMIC, display, WiFi and other components to worry about, but here’s to hoping ASUS did a reasonable job there as well.

Unfortunately ASUS delivered our T100 review sample less than 48 hours ago and I’ve been using it non-stop since then. I think I technically broke embargo by using it at a press event but it’s the only way I’d get enough time with the thing under my belt to feel comfortable writing about it. The bad news is that I only had enough time to provide a battery life teaser. I’m still running more data but for now all I’ve got is our WiFi web browsing test.

The T100’s results are presented with the keyboard dock attached and with the display calibrated to 200 nits:

Web Browsing Battery Life (WiFi)

Battery life looks decent at just over 8.5 hours on a single charge. In practice I had no complaints about battery life while using the device. It feels more like a tablet in that regard and less like a notebook, which is a good thing. Once again we’re seeing ASUS redefining what we’ve come to expect from an entry level notebook PC here. Even compared to Chromebooks we see the T100 do extremely well. I’m curious to get a better feel for how Bay Trail performs in the battery life department, which I’ll be doing over the coming days. So far the results look good but not quite stellar if you compare it to traditional Android/iOS tablets. I am curious to see how BT running Android would turn out.

CPU, GPU & Storage Performance Final Words


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  • Callitrax - Friday, October 18, 2013 - link

    Anand, one issue I have with this review, most of the text approaches the T100 solely as a laptop (paragraphs on the keyboard dock, nothing on balance in hand as a tablet, not one of the gallery images show it detached) Whereas my curiosity in this is as a tablet with occasional laptop functionality. How well does it function as a tablet? Some of the benchmarks help there, but nothing in the Final Words section relevant to that usage mode. Reply
  • azazel1024 - Friday, October 18, 2013 - link

    I don't entirely agree. I care about the display quality and the Delta-E does matter to me to a degree. What I would have liked to have heard more was, AFTER calibration, what was the best Delta-E capable.

    I am planning on using this for light photo editing on the road when I need to travel light, so the display quality does matter a lot. I don't need spot on color or 100% sRGB (I am dissapointed that % of sRGB color gamut was missing from the test), but if after calibration it is still 10+ off that would be dissapointing.

    I'd love to spend more money on a higher quality Windows 8.1 tablet, but roughly $500 is still my price ceiling and so far I haven't seen anyone announce a Windows 8.1 tablet, that is dockable, has a microSD card slot is less than 11" in size and is $500 or less. Pretty much just the T100 so far. I'd be more than happy to pay as much as $100 more for a better/higher DPI display, the z3770 and 4GB of RAM and call it a day (as per my earlier comment. 300Mbps capable Wifi would also be nice).

    For a $399 64GB dockable tablet, the thing seems pretty nice. It seems like there are areas of improvement and in a generation or two, they might be improved or for more cost in this generation (I'd be suprised if in a few months Asus doesn't come out with a higher level Windows 8.1 dockable tablet, which is maybe why better silicon/memory/display are not checkable options on the T100. It might saved for a T200 or something coming in $100 or more higher in price).
  • spejr - Friday, October 18, 2013 - link

    This is an entry level pad with an keyboard cover, only difference is the hinge. How come this review is so positive? I cant imagine this being a good alternative for either a laptop or a tablet, just too many compromises in the same piece of cheapnes. The only argument is economy, but then again my ThinkPad X61 is still running smooth since 06 so thats not a good argument either as quality is cheaper over time. racing to the bottom with one year of life expectency for each device is not the way to go, with anything. Reply
  • AsusJake - Sunday, October 16, 2016 - link

    windows 10 64 bit os on mine only 2 gigs of ram... and runs circles around my 6gig ram quadcore 64 bit vista hp desktop... Reply
  • makken - Saturday, October 19, 2013 - link

    Hmm, does anyone know if Asus is planning on making a laptop--i.e., a non-detachable version, of this thing? Reply
  • wrkingclass_hero - Saturday, October 19, 2013 - link

    No pictures of it undocked from the keyboard in the gallery? Reply
  • Tams80 - Saturday, October 19, 2013 - link

    For those disappointed in this, the Fujitsu Q584 might be of interest.

    It's not available until December though and will likely come with the usual high price tag. The cheaper ones, the Arrows, are Japan only and on par with the T100.
  • timon_comment - Saturday, October 19, 2013 - link

    Waiting a look in Bay Trail M + SATA, Please

    in Windows x86 OS I dislike the eMMC storage system, it is an execrable design, the heavyweight Windows x86 OS is fully unlike in the lightweight Android OS, Windows needs SATA and PCIe, but Atom Bay Trail T is still no support SATA and PCIe.

    Intel actually wanted in Android to compete with ARM processor, does not really want Bay Trail T to help Windows tablet to compete market, because the x86 processor is almost no another competitor! Now is Intel wanted to control the Android market!
  • timon_comment - Saturday, October 19, 2013 - link

    Atom Bay Trail T is still no support SATA and PCIe
  • markc22 - Saturday, October 19, 2013 - link

    Please test any Linux distro on this. Reply

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