Acer unveiled its much-anticipated Aspire One “Eee PC killer” ultra-mobile Tuesday in what was effectively also the UK launch of Intel’s new Atom mobile processor. The Atom-powered Aspire looks even better value than the ground-breaking Eee PC. The entry level model comes in with the same $391 price tag but has a bigger 8.9-inch screen and more flash memory at 8 GB. Like the Eee PC, this base model is Linux powered, with 11gb Wifi, and a webcam, but you also get a choice of built-in Wimax or HSDPA 3g links.