MSI, the most popular overclocking brand is excited to introduce an all-new standard for overclocking stability. MSI's OC Certified standard is the new baseline for overclocking mainboards. the new MSI Z77 MPOWER, which is OC Certified, is submitted to a Military Class stress-test for overclocking. Where other motherboard manufacturers only test for a limited duration, MSI Z77 MPOWER is submitted to a 24 hour OC stress-test. Only mainboards surviving 24 hours of Prime95 while heavily overclocked. The conditions of the OC Certified test are rigorous high temperature, no airflow testing. OC Certified, the new standard OC Certified is MSI's OC testing procedure where Z77 MPOWER mainboards tested for stability with a 24-hour Prime95 stress test. OC Certified test a mainboard in three key areas: Higher Performance Enhanced PWM Cooling Better Power Stability Higher Performance means all OC Certified tests are run at 4.6 GHz CPU speed. The Enhanced PWM Cooling test ensures that, even without airflow in a high-temperature room (30°C) without airflow from a CPU cooler. Better Power Stability is tested by running Prime95 for 24-hours in these conditions. Military Class testing OC Certified is a major extension of MSI's Military Class certification. Military Class III mainboards already have their component quality tested in rigorous tests to ensure all-round stability. OC Certified puts these components to the ultimate test. When an MSI Z77 MPOWER passes the OC Certified test it is able to run in overclocked conditions in high temperatures with little to no airflow . Final OC results of course vary with the component quality of the entire system and users’ technique, but at least you can count on your mainboard not being the limiting factor. OC Certified: Z77 MPOWER MSI's first OC Certified mainboard is the Z77 MPOWER. Built from the ground up for overclocking the new MSI Z77 MPOWER is designed to deliver extreme CPU and memory performance. When combined with MSI's Lightning series graphics cards, it can deliver unprecedented performance.