There are two versions of Internet Explorer 10 in Windows 8—a Metro app and a desktop app. Both share the same rendering engine and, unsurprisingly, perform identically on the same hardware. The only difference is UI, and the fact that Metro’s IE will not run plug-ins like Adobe Flash or Microsoft’s own Silverlight.

To reflect the distinction between the Metro version of IE and the desktop version, both Metro and the desktop retain separate default browser settings—you can run Firefox or Chrome as your default browser on the desktop and stick with IE in Metro, but you can also specify desktop browsers as the default Metro browser, meaning that links clicked in Metro apps like Mail will dump you to the desktop to open rather than stay in the Metro interface. Oddly, if you decide not to use IE as your default Metro browser, the IE completely disappears from Metro, and it takes a trip into the desktop Internet Settings control panel to re-enable it.

The Metro version of IE is a minimalist, touch-centric affair—the address bar is located at the bottom of the screen, and will disappear from view when it’s not being used. While typing in the address bar, IE will display a tiled list of your most frequently visited sites, as well as sites that you have “pinned” using the address bar’s pin button—these pinned sites will also show up on the Start screen. The address bar also has the requisite Back, Forward, and Refresh buttons, as well as a Tools button that will let you search the current page or open the page in the desktop version of IE (the desktop version contains no such button to open pages in Metro mode, at least for now).

The most consistent way to bring up the address bar on a PC is by using the Windows + Z keyboard shortcut that we discussed earlier, which will also bring up Metro IE’s tab interface, which displays big, clickable thumbnails of all your open tabs. You can also open new tabs, clean up your tabs (which closes all but the active tab), or open a new InPrivate browsing tab, which is clearly marked with a blue “InPrivate” icon.

The desktop version of IE looks more or less like IE9, though of course the UI hasn’t necessarily been finalized at this point. One of the only noticeable differences is the presence of a Metro-style scrollbar on pages that require one. Also new is an “Install new versions automatically” checkbox in the About Internet Explorer page, reinforcing Microsoft’s desire to get and keep Windows users on the most current IE version their operating system supports. There’s no evidence that Microsoft plans to move to the rapid-release cycle that Google and Mozilla have both adopted (such a decision would give enterprise IT managers apoplexy), but this sort of functionality would theoretically make it possible.

Benchmarks

Now, let’s peek under the hood and get a few performance numbers. According to these basic tests, IE10 is faster than IE9 by a noticeable margin, but it can’t quite catch up to the current versions of Firefox or Chrome. These benchmarks were all run on the Dell Latitude E6410 that served as my main Windows 8 machine for this review.

Kraken JavaScript Benchmark 1.1

v8 JavaScript Benchmark v6

Interestingly, all browsers performed the v8 benchmark slightly faster in Windows 8. The difference isn’t huge—just a few hundred points in both cases—but it is both consistent and measureable, and I thought it interesting that the OS update slightly improved the performance of these third-party programs. Kraken scores were consistent across Windows 7 and Windows 8.

The New Task Manager Windows Recovery Environment and Secure Boot
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  • imaheadcase - Friday, March 9, 2012 - link

    Its windows ME upgrade to win 7. Nothing but GUI changes that will effect anyone.

    Looks like win 8 is just a way to merge the OS to all devices besides Desktop. Seems more a dev helper OS than a consumer helper OS.
  • B3an - Monday, March 12, 2012 - link

    *face palm*

    You didn't even read the article did you.

    Just counting the desktop changes alone, Win 8 has far more changes than 7 did from Vista.
  • DrApop - Friday, March 9, 2012 - link

    Well, I better go buy me a copy of windows 7 before the stop selling it. The last thing I want to do is slap this ugly windows 8 UI system on my computer!

    Everyone seems to be acting like this is such an innovation from microsoft, putting the same OS on phone, tablet, and now desk top. Does anyone remember Windows CE on a PDA?

    Anyway, some of you love the UI, while I and others do not. We shall see how it goes when it goes on the desktop. All I know is that Microsoft had better start training up a huge slew of CS personnel because they are going have a whole bunch of people calling their CS support line when the win 8 users are unable to find anything on their computer. It is going to be a really mess for about 6-12 months. But I'm sure MS will charge for CS so that will be another revenue stream for them.
  • TEAMSWITCHER - Friday, March 9, 2012 - link

    Given the immense negative feedback there is simply no way Microsoft can afford to launch Windows 8. They have made a massive tactical error - by tying the Metro interface to the classic Windows desktop they have assured it's failure. Desktop users don't want it - and with all the negative feedback - tablet shoppers won't either. Why should they?

    I really expected more from Microsoft. They have done so many good things in Windows 7. How could they possibly want to mess with that success? Is the iPad so threatening? I don't understand how they could let this happen.
  • londiste - Friday, March 9, 2012 - link

    > Windows 8 adds new class drivers for things like USB 3.0 controllers, printers, motion sensors,
    wait... what - motion sensors?
    did you happen to try using kinect at any stage of playing around with w8?
    :)
  • Andrew.a.cunningham - Friday, March 9, 2012 - link

    I don't have one, unfortunately. :-)

    The motion sensors the article refers to are things like accelerometers and gyrometers - mostly hardware you'll find in tablets.
  • Scali - Friday, March 9, 2012 - link

    "Linux advocates act as though Microsoft has taken something away in disallowing third-party OSes on WOA devices, when in fact they’re disabling nothing that hasn’t already been disabled on most competing tablets."

    Nice to see someone telling it like it is for a change.
  • mcnabney - Friday, March 9, 2012 - link

    It looks like backup functionality is only supported for DVDs and local drives in Premium. If you want to backup your system across a home network it looks like you have to upgrade to Professional. I guess MS needs more cash from people who are clever enough to make sure backups aren't stored ON THE COMPUTER NEEDING THE BACKUP.

    Tried the preview. Hated Metro. My multimonitor setup looks retarded with Metro running. Also had some compatibility issues relating to Steam/games. I'm pretty happy with Win7 and am unlikely to spend a bunch of money upgrading my numerous computers for marginal at best gains.
  • Andrew.a.cunningham - Friday, March 9, 2012 - link

    Yeah, that's how it is in Windows 7, which seriously limits the feature's usefulness. We're still waiting to see how the Windows 8 product editions break down, and what features are present/excluded from each version.
  • IlllI - Friday, March 9, 2012 - link

    windows 7 will be the last version they ever use. the learning curve to windows 8 is too steep and i can't keep trying to teach them, especially with their memory not being as good as it once was.

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