Final Words

With the exception of the SSD and Windows 7's unfortunate lack of elegant DPI scaling, the Zenbook Prime is the epitome of Ultrabook perfection. It has all of the build quality that we loved about the original Zenbook, with almost none of the quirks.

The display is truly in a league of its own. Color reproduction, brightness and contrast are all exactly where they need to be. Viewing angles are similarly perfect. While the original Zenbook's panel was frustrating, the Prime's display is wonderful to look at. Whether browsing the web or watching movies, it's just awesome. The biggest question is whether or not 189 PPI is too much for you. On an 11.6-inch screen I expect that not everyone will be fond of the resolution, but if you've wanted a ton of desktop space on a small display then the new UX21 will be everything you've been hoping for. I suspect more users will be happy with the 1080p IPS panel on the 13.3-inch UX31 however. I'll try to post an update in the coming days with some Windows 8 experience to see if that makes for a better fit. Kudos again to ASUS for working very hard to be competitive in this space, despite not having the purchasing power or control over the supply chain that Apple does.

The improved keyboard, is like night and day compared to the previous version - with a backlight to boot. The trackpad is also improved, although at the risk of overusing the Apple comparison I will say that it continues to be a hair behind what Cupertino has been able to deliver. The problem there is likely a lack of control over the software stack, a benefit reserved for vertically integrated companies.

Wireless performance and functionality are both improved over the original Zenbook and are, at least on paper, equal to Apple's MacBook Air. The move to a 2x2:2 802.11n setup with 5GHz support easily doubles WiFi performance compared to the original UX21. The use of Intel's Centrino Advanced-N WiFi stack enables WiDi support, which can be very useful on a notebook.

The convenience of two USB 3.0 ports, courtesy of Intel's HM76 chipset, is a welcome improvement as well.

Overall, I'm glad to see that ASUS is focusing more on the tangibles and user experience than just on shipping well engineered products. It's hilarious that out of all of the players in the notebook and tablet spaces combined, that ASUS seems to be one of the only ones (if not the only one) actually trying to go after Apple.

While I'll save the truly final verdict for when ASUS gets me shipping hardware, chances are if you've been waiting for the perfect 11-inch Ultrabook - the Zenbook Prime UX21A is it.

Battery Life, Configurable TDP, Thermals & Noise
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  • puppies - Tuesday, May 22, 2012 - link

    Name a single game that you will run on this product that uses more than 4GB of RAM.

    Your usage needs are so far from the norm that you might aswell forget finding something that satifies your criteria.

    Or is this some weak attempt at trolling by pointing out what a low power ultra book can't do because it was never designed to do it in the first place.
  • r3loaded - Tuesday, May 22, 2012 - link

    "ASUS, people do more than web surf and face book on their laptops."

    Actually, that's what the vast majority of people do. What, you thought those spoilt students with MBPs were using them for computationally intensive tasks?
  • ImSpartacus - Wednesday, May 23, 2012 - link

    I can vouch that most users do just that. We can include this user as well (with his MBP). >_>
  • rosege - Thursday, May 24, 2012 - link

    I agree - hence im looking at the UX32VD-DB71 - though would really have liked 8GB - think the onboard should have been 4 then have the option to add another 4

    only 4gb in the other models is a major weakness imho
  • sheltem - Tuesday, May 22, 2012 - link

    Why can't Asus just include two mini displayports and call it a day? I understand why people still use full size VGA, but mini VGA is just retarded; you're going to need a dongle anyway.
  • MobiusStrip - Tuesday, May 22, 2012 - link

    That is pretty annoying. A DP-to-HDMI adapter is under $5.
  • ka_ - Tuesday, May 22, 2012 - link

    Not sure but I understand Displayport essentially is the same as thunderbolt which essentially let any connected device bypass the entire security of your system the same way firewire did, so no thanks until that issue is resolved.

    I do agree however that having mini connectors - expecially for HDMI which already is small is a worry. Most mini-firewire connectors I have had in the past failed over time as I happen to bring my machine back and forward to work and clients. I think I will connect a screen way more frequently than I connected my external Firewire devices in the past.

    VGA I understand had to be shrunk here, but why shrink the already small HDMI port?
  • Kevin G - Tuesday, May 22, 2012 - link

    Thunderbolt tunnels PCI-e which has access to memory as any add-on board would. DisplayPort on the other hand mainly handles video output with options for audio and basic IO tunneling (think keyboard, mouse, touch screen etc.).
  • Penti - Wednesday, May 23, 2012 - link

    DisplayPort has nothing to do with Thunderbolt you freaking egghead! It's not connected to any system bus. When used in conjunction with Thunderbolt (PCIe) it uses a cable that carries both signals in the same Thunderbolt (Not DP!) cable. DP-devices can however never connect to the Thunderbolt hardware, which is why it also costs quiet a bit. You can get your normal TMDS SINGLE/DUAL-LINK DVI-D, VGA, HDMI or just plain digital DisplayPort via adapters as it's all compatible with those. A DisplayPort to HDMI cable, or DVI (same signal no sound) or adapter costs nothing and comes included in many computers or graphics adapters. All modern monitors uses it now and there are adapters and converters for legacy stuff as well. Most modern GPU's don't have the option to have dual or quad dual-link DVI any more. I also don't know why you would like to clutter up your notebook with 3-4 different ports that will need cables and so on any way.

    There are no issues to be resolved with Thunderbolt any other extension involving system buses has worked the same way, there are eventually software fixes to be had, but we will not fully virtualize the address space here and just as we can shut off USB-ports enterprises will probably be able to shut off Thunderbolt functionality in firmware. However they are essentially invisible PCIe switches now that the firmware doesn't touch and that is it's strength. It's no different then to put in an Expresscard accessory in your computer. If you have physical access you have physical access, you could just as well open it up and connect to the PCIe bus of the Mini PCI-Express slot. You also don't need the DMA-vector for cold boot attacks against your encrypted hard drive so it is an entirely pointless discussion. Plus it's just as hard to use as a attack and delivery mechanism as any internal PCIe chip is. You better not use any add in boards in stationary computers either I guess. This is not an Apple we don't ask for DisplayPort for the sake of DP + Thunderbolt, we ask for it because it is the only modern video interface and is natively compatible (well the gpus are, and the cabling can be adapted to whatever you need and are designed to carry those signals) with HDMI, DVI and VGA. Which is all you need. You do need DisplayPort, or a business laptop with a docking station and dual-link DVI support or active DisplayPort to dual-link DVI converter to drive anything over 1920x1200 on a laptop (3GHz HDMI 1.4a will go higher and is supported as of very lately but not by computer displays yet.). You can't try to force all that through a HDMI-connector with the same universal compatibility, versatility, better to have two mini-DP's if you like to drive a couple of displays without daisy-chaining.
  • KZ0 - Tuesday, May 22, 2012 - link

    Truly impressive. Just DPI scaling remaining, then. Only thing holding me back is that I can't really complain about my current computer.

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