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Standard Performance Evaluation Corporation

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SPEC CPU® 2006

The SPEC CPU® 2006 benchmark is SPEC's industry-standardized, CPU-intensive benchmark suite, stressing a system's processor, memory subsystem and compiler.

This benchmark suite includes the SPECint® benchmarks and the SPECfp® benchmarks. The SPECint® 2006 benchmark contains 12 different benchmark tests and the SPECfp® 2006 benchmark contains 19 different benchmark tests.

The SPEC CPU® 2006 benchmark is available for purchase via the SPEC order form.

SPEC designed this suite to provide a comparative measure of compute-intensive performance across the widest practical range of hardware using workloads developed from real user applications. These benchmarks are provided as source code and require the user to be comfortable using compiler commands as well as other commands via a command interpreter using a console or command prompt window in order to generate executable binaries.

The SPEC CPU® 2006 benchmark has several different ways to measure computer performance. One way is to measure how fast the computer completes a single task; this is a speed measurement. Another way is to measure how many tasks a computer can accomplish in a certain amount of time; this is called a throughput, capacity or rate measurement.

  • The SPECspeed® metrics (e.g., the SPECint® 2006 benchmark) are used for comparing the ability of a computer to complete single tasks.
  • The SPECrate® metrics (e.g., the SPECint®_rate 2006 benchmark) measure the throughput or rate of a machine carrying out a number of tasks.

For more information about the SPECrate® and SPECspeed® metrics, see the technical documentation.

The current version of the benchmark suite is V1.2, released in September 2011.


Submitted Results
Text, HTML, CSV, PDF, and Configuration file outputs for the SPEC CPU® 2006 metrics; includes all of the results submitted to SPEC from the SPEC member companies and other licensees of the benchmark.

Search across all SPEC CPU® 2006 results in SPEC's online result database.


Benchmark Press Releases
Press release material, documents, and announcements:

Benchmark Documentation
Technical and support documents, Run and Reporting Rules, etc. All documentation available on the DVD is also available here.

Benchmark Descriptions
A survey of the benchmarks comprising each of the SPEC CPU® 2006 component suites:

  • SPECint® 2006 - the integer benchmarks.
  • SPECfp® 2006 - the floating point benchmarks.
  • A PDF summary of all 29 benchmarks, as published in the ACM SIGARCH newsletter, Computer Architecture News, Volume 34, No. 4, September 2006.

Related Publications
An archive of selected publications related to the suite is available.


Installation, build, and runtime issues raised by users of the benchmark software.


Flag Descriptions - explanations from the testers for what all those cryptic flags in the results' notes section really mean.