Stefan Mileschin

With each new operating system in recent history, Microsoft has promised better battery life. We tested this back in the early days of Windows 7 and found that while Vista was generally a step back relative to XP, Windows 7 fixed much of what was wrong and even managed to beat XP in several tests. With the Windows 8 Consumer Preview now available, we thought we’d run a quick test on a laptop to see if things have changed much. Let’s just get this out of the way, shall we?

Okay, that’s a pretty poor showing, but what’s really going on here? We’re using the same Sandy Bridge laptop that we tested back when SNB first launched, a Compal unit with an i7-2820QM processor. So the hardware hasn’t changed, but battery life is much worse right now—and that last part is important: right now. We did a few tests of battery life with the Windows 7 preview and it didn’t look that great, but drivers and optimizations weren’t finalized, and Windows 8 CP is definitely in that same category. But there’s more to the story than just Windows 8.

As part of the Windows 8 CP experience, we’re also given the privilege of running the Internet Explorer 10 Consumer Preview (IE10CP). As we’ve noted in the past, the choice of browser can certainly have an impact on battery life, and that likely goes double when we’re looking at beta software for the OS and browser. I also performed an in-place upgrade from Windows 7, so it’s possible that could negatively impact battery life as well.

I've only had a chance to run the battery drain test once so far, so consider the above results very preliminary. I'm going to test it again, as well as going back and retesting with Windows 7 (and IE9) to see if there's any other changes. While I continue to look into battery life over the next few days to see if perhaps I missed something, for now it doesn’t look like Win8 CP is going to do anyone any favors in that area.

And just as an aside, I know that Windows 8 isn’t final by any stretch of the imagination, but while the UI seems like it would work great on a tablet I’m ready to go on record as saying it sucks for traditional desktop and laptop users. Without a touch interface, Metro feels weird at best and downright awful at worst. What’s more, getting a touchscreen for a desktop or laptop isn’t actually something I’m clamoring for. Does using a 24” or 30” touchscreen on my desktop sound enjoyable? Not at all, and a 15” laptop touchscreen wouldn’t be much better. Maybe it would help me build up a bit of arm strength, but that’s about the only upside. Add on fingerprints—a personal pet peeve that smartphones and tablets still suffer from—and I’m more than happy to stick with the “boring” old Start Menu. That’s just my initial impression of course; anyone else have similar—or different—feelings after playing around with the Win8 CP?

http://www.anandtech.com/show/5619/w...t-battery-life