Intel Processor Identification Utility (for Windows, sorry).
This is kind of cool though. It shows the cache on your CPU(s), and other information about the CPU(s) in your machine. It requires Windows running under Boot Camp (or a standalone PC running Windows). I compared it to a Pentium 4 machine at work and found that my Core Duo has much larger cache and supports features the Pentium 4 doesn't, even though the P4 clock speed is rated higher. My Mac runs laps around the P4 though at least on some tasks.
This is kind of cool though. It shows the cache on your CPU(s), and other information about the CPU(s) in your machine. It requires Windows running under Boot Camp (or a standalone PC running Windows). I compared it to a Pentium 4 machine at work and found that my Core Duo has much larger cache and supports features the Pentium 4 doesn't, even though the P4 clock speed is rated higher. My Mac runs laps around the P4 though at least on some tasks.