Keanu Reeves and Sandra Bullock were both unavailable for comment, but we're guessing the pair would be quite pleased to see that the tech world's Need For Speed is hardly fading. Maingear and Origin PC have both announced this week that their high-end gaming desktops are now available with Intel's Core i7 2700K -- a beast of a processor that's clocked from the factory at 3.5GHz. Maingear's shoving this guy into its SHIFT (starting at $1,985) and F131 (starting at $1,228) rigs, with factory overclocking options pushing it beyond 5GHz. Origin is hawking its