• Processor name and vendor
• Core stepping and process
• Processor package
• Processor current core voltage
• Internal and external clocks, clock multiplier
• Partial overclock detection
• Processor features, including supported instructions sets.
• L1 to L3 cache information : location, size, speed, technology.
• Motherboard information : name, vendor, BIOS, chipset, memory, AGP.
• Memory information : size, type, timings, specifications.

CPU-Z also provides several tools : 

• A complete report, that includes CPUID, MSR, PCI device list, SPD, DMI.
• A cache latency calculation tool.

 This tool computes the real latency of each cache memory level. Notice that the reported sizes may not be the correct ones on CPUs that use an exclusive L2 (for example a Duron will report a 128Kb L2 cache size instead of 64Kb, because the L1 size in included).
Moreover, notice that using this tool if the CPUs is heavy loaded can provide bad results. Please use the "Refresh" button to restart the calculation.

Supported Hardware and OS
CPUs

Quite all Intel's and AMD's CPUs that hold cpuid instruction are supported.
Latest i486, Pentium, Pentium MMX, Pentium Pro, Pentium II, Celeron, Pentium !!!, Pentium 4, Pentium !!!-M, Pentium 4-M, Pentium M;
Am5x86, K5, K6, K6-2, K6-III, K6-2+, K6-III+, Athlon (4, XP, MP), Duron, Athlon 64, Opteron ;
VIA C3 (Samuel, Samuel2, Ezra, Ezra-T, Nehemiah), Cyrix M1, M2 ;
Notice that all informations are not provided on all CPUs.


Chipsets

Following chipsets are fully supported :

• Intel i430TX, i440LX, i440FX, i440BX/ZX, i810/E, i815/E/EP/EM, i845, i845E, i845G, i850/E, i845PE/GE, E7205 (Granite Bay), E7500, i852, i855, i865P/PE/G, i875P, i915P/G, i925X.
• VIA Apollo VP3, Apollo Pro, Apollo Pro +, Apollo Pro 266, KX133, KT133(&A), KT266(&A), KT400, P4X266(&A), PT880, K8T800, K8T800 Pro.
• AMD 751, 761, 762 (760MP).
• SiS 645, 648, 735.
• nVidia nForce 1, 2 & 3 series.

Other chipsets may be partially supported (no AGP or memory information).


Operating systems

Windows 95, 98, Me, NT4, 2000 and XP. The Windows 64 bits versions for AMD64 systems are supported.