Mike Chapman writes: Don't expect Windows 7 performance gains to drop on eight-core chips that come out from Intel this year. For systems going beyond quad-core chips, the performance may actually drop beyond quad-core chips. Why? Windows and Linux aren't designed for PCs beyond quad-core chips , and programmers are to blame for that. Developers still write programs for single-core chips and need the tools necessary to break up tasks over multiple cores. Problem? The development tools aren't available and research is only starting.