The Windows Experience Index on Windows 8....

This computer is five years old, and it's not running the latest flavor of Windows,
which is 8.1, but it is running Windows 8 Pro, Windows 7 SP1, and PCBSD 9.2,
and it still rates better than the above illustration from Microsoft....

...but I really ought to qualify that by saying that this isn't the OEM version of this Acer Aspire X3200, because I've replaced its original graphics card with a better one from ATI, a Radeon HD 5450 with its own built-in memory, and I've also added to the RAM to make that 4 Gb. And I've replaced its monitor with a 30-inch flatscreen TV, so I can watch TV if I get bored with surfing the web. And all that explains why this still kicks ass, and gets the job done. 

At the end of my research on it I answered a survey for Microsoft, and it didn't have a space for additional comments, or I could have told them that I've tried their Windows 8.1, and went back to Windows 8 Pro, because I like it better. But the 8.1 version runs fine on here. I just prefer the other one, because I'm more familiar with it, and I've tweaked it with add-ons I prefer, like 8GadgetPack.