 SPEC benchmarks are widely used to evaluate the performance of computer systems; the test results are published on the SPEC website.SPEC evolved into an umbrella organization encompassing four diverse groups; Graphics and Workstation Performance Group (GWPG), the High Performance Group (HPG), the Open Systems Group (OSG) and the newest, the Research Group (RG).Membership in SPEC is open to any interested company or entity that is willing to commit to SPEC's standards.