CrystalCPUID is a Free Portable CPU Utility that can be used to display CPU Info. Important processor related information such as CPU Name, Code Name, Vendor Sting, Name String, Microcode ID, Stepping, Clock Speed, System Bus, Multiplier, L1, l2 and l3 cache and more. System BIOS, Version, Chipset and Motherboard information is also available. Moreover, you can manage your multiplier in some cases. This option did not work in Vista for us.
CPU Info Utility - Crystal CPUID
Authors Website: CrystalCPUID
Download: Get this Portable CPU Utility HERE