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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  • azazel1024 - Friday, October 18, 2013 - link

    Thanks for the review. It has solidified that if nothing "better" comes out between now and the holidays I'll be selling my iPad 2 and getting a T100.

    It certainly doesn't sound perfect, but it does sound "good enough" for me. I need a tablet that is a decent content consumption device. It needs to have a decent enough panel in it that it doesn't hurt my eyes or my pride to use it. It needs to be able to be decent for watching movies, listening to music, looking at photos, browsing the web and writing email. Windows 8.1 and the T100 seem to have that.

    As a bonus this means I can leave my HP Envy 4t at home on occasion when traveling light, and still have a machine that can use Lightroom 4. It doesn't have to be super fast, but it has to be capable of running it, which it sounds like this will. It should be on par or faster than the old Turino based 17" Toshiba laptop my wife used to have a few years ago, which I used Lightroom on for on the road image review/light editing. Also bonus points for being able to run some older Windows based games with a bluetooth game pad or keyboard/trackpad/wireless mouse.

    $399 for the 64GB version plus around $50 for a 64GB microSD card isn't too bad. I would like to see what kind of performance the microSD card slot is capable of though to judge what kind of card I should get for it.

    I do wish Asus at least had an option to bump the silicon up to the Z3770 and 4GB of memory. I'd gladly pay an extra $50 for that. I'd just as gladly pay $100 extra for the Z3770, 4GB of memory, dual stream dual band Wifi (bonus points of 802.11ac) and a better quality panel that was 900p.

    For me my absolute max budget is $500 for a "tablet" and I doubt I'd ever be willing to pay more than that. I'd of course rather spend less, so $399 is nice...but again, I'd rather spend a bit more for even faster silicon, more memory and a better panel (better wifi wouldn't hurt). I do wonder if Asus might have another Transformer Windows 8.1 tablet down the road, a higher end one...maybe before Christmas?

    I can hope anyway.
  • Wolfpup - Friday, October 18, 2013 - link

    Wow, this is pretty amazing hardware for $350-400! I'm getting really, really impressed by these Windows 8 tablet/hybrid things, and their pricing. This is kind of what Microsoft's been hinting at for the last decade, but the hardware's finally catching up to the idea.

    Dang, these things are practically impulse buys, cheaper than a freaking iPad lol
  • Hector2 - Friday, October 18, 2013 - link

    I bought a brand new 15.4" Win8 2.4GHz Pentium dual core full feature Lenovo laptop on sale last year for $270. It's great & I'm real happy with it. Internet-only Chromebook prices need to be less than $200 for me to buy Reply
  • OneOfTheseDays - Friday, October 18, 2013 - link

    Another terrible review from Anand. It's becoming quite clear to me that this guy is incapable of reviewing any Microsoft products at this point due to his obvious Google/Apple bias.

    For starters, this is a $349 device. Who the fuck cares about delta E and calibrated displays at this price point? What a completely irrelevant point to make for a device that is obviously geared at people who couldn't care less about that. The bottom line is it's IPS, has decent resolution, and gets bright enough and has decent contrast. It gets the job done, period.

    Also, what is this about Metro IE11 being horrible? Are you kidding me? Metro IE 11 is probably the best TOUCH browser experience you can get on Windows. Desktop IE11, that's a different story. Still, if you are in tablet mode Metro IE11 is perfectly capable for any user.

    Finally, battery life. This thing gets 8.5hrs. That is MORE THAN ENOUGH for 99.99% of users. Again this is a $349 device, the fucking garbage Chromebook 11 you just reviewed can barely muster 4 hours and it's nothing more than a glorified web browser running ARM.

    This site is going down the tubes and Anand is clearly to blame. He needs to stick to SSD reviews and let other reviewers without bias handle these ones.
  • BrianChase1776 - Friday, October 18, 2013 - link

    I thought it was pretty fair even though I didn't understand the Chromebook fascination, those things are trash. But, when comparing tablets it makes sense to compare these vastly superior machines to those toys since the majority of tablet buyers care more about how it looks and how quickly it loads a Youtube video than what it has inside. Unfortunately, we're a minority by a large margin. Reply
  • OneOfTheseDays - Friday, October 18, 2013 - link

    It was a terrible review that focused on all of the wrong things. Nobody cares about how calibrated a display is at a $349 price point. Anand's reviews are becoming increasingly off the mark IMHO. Reply
  • BrianChase1776 - Friday, October 18, 2013 - link

    I still have to disagree, my parents, for example, don't understand that a simple Google search could explain how to fix the calibration issues. If they received the device and took issue with the colors they would quite literally assume it is broken and move on to looking for another device. We can figure it out, and we want options, but most people can only handle simplicity. Reply
  • BrianChase1776 - Friday, October 18, 2013 - link

    Can't find an edit option but for the record I think the t100 looks amazing! I strongly believe that Apple and Android are garbage and, for those of us that plan to do anything serious on a tablet this device will do the job. I'm just defending the practice of writing a review for the majority, even thought it is sad that it has to be done that way. Reply
  • steven75 - Friday, October 18, 2013 - link

    It's definitely an interesting option to say "Apple and Android" are garbage. The consumer market speaks and it soundly disagrees with that. Reply
  • Nagorak - Friday, October 18, 2013 - link

    Until recently there wasn't even another viable option, so it's kind of a stretch to say the market has spoken. Reply

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