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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  • WPLJ42 - Friday, March 9, 2012 - link

    The price was right on an HP AIO with an ULV CPU. Even with a 1.6 GHz CPU, the fan runs too much. About W8. Both the Developer and Consumer versions crashed and burned. After a few days, my PC went into a constant loop of rebooting. With the Consumer version, I was careful not to let Windows Update install any hardware drivers. I was using a dual boot with Windows 7. With both W8DP and W8CP, if I shut the computer down with Windows 8, it would boot itself in the dark of night. I am not an IT guy, just a run of the mill user. I had no issues with Windows 7 Beta, but it was running on an iMac with either VirtualBox or BootCamp, and it had to be the 32-bit version. I would like to know if my probably is an AMD thing, or HP, or if it is just me.
  • Hulk - Friday, March 9, 2012 - link

    As the author posted the Windows XP OS was getting long in tooth for me as I wanted to upgrade to 64bit OS and apps. Now that I'm there with Windows 7 I have absolutely no reason to upgrade to Windows 8. Actually since I'm sure we'll still be using 64bit applications in Windows 9 it might be a VERY long time before I move from Windows 7. I stayed with XP 9 years and if we were still 32 bit I have a feeling I'd still be using it.

    Good luck MS. But I'm fairly confident you're going down the wrong path on this one. 99.9% of desktop PC's are not touch screens. It doesn't make sense to alienate those users to "future-proof" yourself.

    I bet they will reverse course on this in Windows 9.
  • hrmes09 - Friday, March 9, 2012 - link

    Having used Windows 8 preview has made me so angry that I registered to Anandtech just to post this!
    I can't believe that MS is trying to shove all this down our throat!
    Metro looks childish on a desktop computer and feels awkward. It's also the least intuitive gui that I have ever used!
    If they continue down that road Windows 8 is going to be Microsoft's Itanium.
  • glugglug - Friday, March 9, 2012 - link

    The Storage Spaces feature is truly awesome for us.
  • hechacker1 - Friday, March 9, 2012 - link

    I think that's probably my favorite Windows 8 feature.

    I just wonder how it compares to Intel raid, or other hardware raid. Frankly, Intel RAID is ok, but RAID5 write performance drops off a cliff.

    Benchmarks Anandtech?

    What I don't like is that it's probably impossible to access this from any other operating system if you happen to dual boot. At least Intel's and most other RAID5 implementations are accessible.

    Oh, and the NTFS deduplication sound interesting too. Although you don't get to use it on ReFS AFAIK.
  • rburnham - Friday, March 9, 2012 - link

    Great article! My only disappointment was not seeing the new OS installed on a Windows tablet, like the Acer Iconia.
  • Zaranthos - Friday, March 9, 2012 - link

    Where's my regular start menu? Quick launch (yeah I hate pinned icons)? Regular desktop icons? I spent a couple hours using Windows hate (8), went to bed mad, got up mad, told some of my friends how much Windows 8 sucked, and haven't used it since. My keyboard and mouse serve a purpose and Metro made them seem nearly useless. Windows 8 might be my new Vista/ME. I'd throw all the other improvements into the garbage can if they're tied to Metro.
  • dchinu - Friday, March 9, 2012 - link

    Its so dmn dumb argument "In fact they’re not disabling anything that hasn’t already been disabled on most competing tablets."
    Its like saying I am not the only one look at him, he's too a bedwetter
  • fisherg - Friday, March 9, 2012 - link

    I believe it takes 3 mouse clicks to shut down Win 8. How many for Win 7? My XP machine is 3
  • hrmes09 - Friday, March 9, 2012 - link

    2 mouse clicks for Win 7. Also fewer miles moving the mouse around...

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