General-purpose code seems to slow down the Cell performance a bit, as it would appear on a recent Geekbench test. Primate Labs ran a few benchmarks under Linux and the results show the PS3 being beat by a Power Mac G5 1.6GHz in all tests except memory performance. We have to keep in mind, the tests only prove the Cell is not a wonderful "general-purpose" CPU. And lest anyone forget, the purpose of the PS3 is to play games!
Cell-specific optimizations are going to be implemented in a future Geekbench test, so once round 2 comes along, we'll get a taste of what's really cooking underneath the hood of our favorite console. Fire when ready!