OverClock Checking Tool (OCCT)Free Download

OverClock Checking Tool (OCCT) 5.5.4
Free Download for Windows PC

Benchmark and overclock your system components with the best free PC testing Tool

Download OverClock Checking Tool (OCCT) for Windows PC

Safe & Secure OverClock Checking Tool (OCCT) Free download version 5.5.4 files. Compatible with Windows PC 7, 8.1, 10 & 11 32/64-bit OS.

OverClock Checking Tool (OCCT) Review

What if your latest blue screen was due to a hardware failure? Then download OCCT which is the most popular CPU/GPU/Power Supply testing tool available. OCCT is great at generating heavy loads on your components, and aims at detecting hardware errors or overclocking issues faster than anything else. A monitoring engine is also embedded, to ease diagnostic and see how your computer reacts under heavy load using graphs.

OverClock Checking Tool (OCCT) download overclocking tool


OCCT’s own CPU test. Small data set is great at pushing your CPU to its limits, and Large data set is the best at finding errors quickly.


The famous Linpack test, known for pushing Intel CPUs to their limits. Not as great on AMD CPUs though, and less likely to pick up errors than OCCT.


OCCT’s version of the furry donut, which includes an error detection mode for finding rendering errors automatically.


Exclusive OpenCL-based Memtest for testing your graphic card’s memory ! Runs on any GPU (Intel, AMD, Nvidia) with OpenCL support. It is great at finding faulty bits, less at finding overclocking-induced errors.

Power Supply

Combines CPU:OCCT and GPU:3D tests to stress your power supply and motherboard. This test is the most power-hungry included in OCCT. Useful to identify power-starved components.

CPU Temperature Monitoring

OCCT will monitor your computer and present you real-time graphs showing you temperatures, voltages, fan speed, frequencies, component usage, and power consumption during your tests.

Built-in Protection For Your Computer

Worried about frying your components ? Turn the maximum temperature threshold in OCCT’s options ! Should a component reach this critical temperature during a test, OCCT will stop itself immediately.

Test Report

At the end of a test, you will be able to save a full graphical report of what happened during the test, for diagnostic purposes


  • Up to 16-core support ( for instance, up to a Quad-Kentsfield or an Octo-Conroe )
  • Customizable tests ( Duration, Priority, CPU or RAM, … )
  • CPU and Motherboard detection
  • Monitoring support through 3rd party application ( i.e. MBM5, Speedfan and Everest Ultimate Edition 3.50 or above )
  • Can produce graphs showing temperature and voltages during the test : Unique feature !
  • Multi-language support

OverClock Checking Tool (OCCT) download old version or crack?

Free download OverClock Checking Tool (OCCT) version 5.5.4. We do not provide any crack or license key for OverClock Checking Tool (OCCT) full version activation.