After doing a clean install of Windows 7 and re-testing all battery life results (to ensure battery degradation wasn’t penalizing the Win8 scores relative to our original Win7 results), I then performed a second upgrade to Win8CP. What I do know is that I ran the Internet Explorer 10 CP test three times on that initial upgrade, and outside of the first run (240 minutes), the other two results were virtually identical (262 and 263 minutes).įor some reason, doing an upgrade to Win8CP with a “well worn” installation of Windows 7 appears to have the potential to seriously impact battery life. I had hoped to return and do a completely clean install as well, but that eventually proved unnecessary (and I didn’t have enough time). Quite a few games and applications had been installed (and uninstalled) during previous benchmarking, but I figured an in-place upgrade would be representative of what many will do. The laptop was the original quad-core Sandy Bridge sample that Intel shipped out to various sites last year to the best of my knowledge, the laptop was never actually sold at retail, though it’s similar to older Gateway NV7x models and sports a “Packard Bell” logo on the touchpad buttons. My initial test was done after performing an in-place upgrade to Windows 8 CP on a laptop that had been used on and off for the past year. Below you can see the full set of results, but let me preface the charts with some additional information that may help to explain any discrepancies between our results and those you might find elsewhere. Eventually, I added a second laptop to the list and started running additional tests on both laptops. What started as just one set of results from one battery life test quickly ballooned into more in-depth testing, as the first results were rather shocking. Last week I did a quick preview article showing some initial battery life results for Windows 8 Consumer Preview.
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