https://www.asus.com/lifestyle/hub/notebook-pc/
    ASUS recommends Windows 10 Pro.

    ASUS Transformer Book T90 Chi

    ASUS Transformer Book T90 Chi

    Ultra-light 8.9-inch 2-in-1

    • Ultra-slim laptop transforms seamlessly into a tablet.
    • Pure, streamline curve design. Metallic cover with diamond cut edges
    • Fan-less design with the all-new Intel® processor is powerful and power-efficient.
      ASUS Transformer Book T300 Chi
      Mobility. Performance. Beauty
      The 2-in-1 that gives you everything you've dreamed of
      Powerful laptop, handy tablet
      Ideal for work, perfect for play
      Let's admit it: carrying both a tablet and a laptop is a nuisance. Chi is a 2-in-1, which means exactly what it says — it's a Windows laptop with a keyboard that detaches, turning it into a Windows tablet. Two devices, in one beautiful package. It's a simple idea that's elegant and convenient, too. Need to work? It's a powerful laptop. Time to relax? Detach the keyboard and it's a handy tablet. No fuss, no hassle.
      LAPTOP MODE
      TABLET MODE
      Thinner. Lighter
      Transformer Book T90 Chi is razor-thin and feather-light, with a tablet that's just 7.5mm thin and weighs a mere 400g. Even with the keyboard attached, it's still a slender 16.5mm and weighs just 750g, so you'll never have an excuse to leave your T90 Chi at home. Working (or playing!) on-the-go has never been so easy.
      Only 7.6mm
      720g
      Luxury. Elegance. Purity
      Seamless design with diamond-cut edge
      Transformer Book T90 Chi may look smooth, slim and sophisticated, but it's tough at heart. The body and display are both precision-crafted, all-aluminum one-piece designs that eliminates the need for ugly seams and screws. This also means that even though it's exceptionally thin and light, there's no loss of strength. Chi takes real life in its stride, without missing a beat.
      DIAMOND CUT
      Picture Perfect
      Clear & bright ASUS TruVivid display
      Experience beautifully-clear and bright images with T90 Chi's ASUS TruVivid display, engineered using direct bonding to reduce reflections and give sharper, more vivid colors under any lighting conditions. With Chi, images look so good you'll think they're real. And with IPS technology for super-wide viewing angles, Chi really is a feast for your eyes.
      WQHD
      178°IPS
      NTSC 72%
      Immersive Audio
      Powerful, crystal-clear stereo sound
      Chi banishes the idea that small size means small sound. Exclusive ASUS sound technology combined with powerful stereo speakers gives you crystal-clear audio with deep, rich bass. Now you can enjoy the ultimate sound experience — anywhere!
      Dual Speaker
      Quad-Core Power
      The perfect all-rounder for any task
      To give Transformer Book T90 Chi its all-day battery life and quiet operation, only the most power-efficient components are good enough. That's why we chose the latest quad-core Intel® Atom™ Z3775 processor. With a performance boost of more than 10% over previous-generation processors, it breezes through common tasks. You can depend on T90 Chi to give you all the day-to-day performance you need.
      SSD
      Wi-Fi 802.11ac
      8hrs
      PCMark Vantage
      5029
      4158
      Bay Trail Z3740
      3D Mark
      2309
      459
      Clover Trail
      Read / write speed
      2X
      eMMC
      HDD
      *the longer is better.
      Tested by SKU: Bay trail Z3775 vs Z3740, eMMC5.0 vs SATA2.0
      Peak Performance
      Everyday Tasks Made Easier.
      With Transformer Book T90 Chi, our design goal was to give the best performance with minimum size and maximum convenience. With class-leading speed from its Intel® Atom™ processor and blazingly-fast data transfers from its all-flash storage, there's more than enough power for anything you want to do while you're out and about, whether it's for work or play.
      All-day battery life
      Getting a powerful battery into T90 Chi was no simple matter. When it's as thin and light as this, engineers need to dig deep to come up with a solution — in fact it took ours six months before they were happy with the battery life. But it was worth the effort, as T90 Chi lasts for a full ten hours before you need to visit a power outlet!