Download OCCT 5.5.3 for Windows

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About OCCT

OCCT is a downloadable Windows-based application that serves users as a functional over-clocking tool.

Standing for ‘OverClock Checking Tool”, OCCT is basically a CPU stability testing program. The application features 3 test types, 3 test modes, and an integrated monitoring and System information engine.

OCCT can be used to test a computer device’s CPU, RAM, or Mix (alternated CPU and Ram).  This software has an External Monitoring Program support through plug-ins (Everest, Speedfan and many more), as well as a graph output showing temperatures and voltages in a device.

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