SPEC INT is a computer benchmark specification for CPU integer processing power.
CPU2006 is a set of benchmarks designed to test the CPU performance of a modern server computer system.
For a fee, SPEC distributes source code files to users wanting to test their systems.
These files are written in a standard programming language, which is then compiled for each particular CPU architecture and operating system.
Thus, the performance measured is that of the CPU, RAM, and compiler, and does not test I/O, networking, or graphics.
SPEC, in this case, defines two reference points, "base" and "peak".
This number represents maximum system performance, achieved by full compiler optimization.