Step-by-step guide to push your Core i7 920 to 4Ghz. Agenda: Testing Equipment (P3), Install hardware (P6), Performance & temperature basics of the core i7 920 (P9), BIOS Settings to achieve 4GHz overclock (P12), 4GHz i7 920 Performance and Temperature (P18), TURBO BOOST function to reach 4.2GHz (P24), Reload Profile with EZ-Share BIOS (P25), Advanced Overclock Uncore & DDR3 Frequency (P26), Final Words (P27). As you can see in the pictures below, the platform I will be using today includes the Intel CORE i7 920 processor, the GIGABYTE GA-EX58-EXTREME motherboard and CORSAIR TR3X6G1333C9 3 channel DDR3 memory. The goal of this article is to show how to make the Core i7 920 go to a higher frequency (overclock to 4GHz) while maintaining stable operation. Keep in mind, 4GHz is a higher frequency than the most expensive i7 Extreme 965 (3.2GHz) CPU. So, if you are able to increase the i7 920 stock frequency of 2.66GHz to 4GHz, you are able to achieve an almost 50% higher clock. The motherboard itself is also equipped with GIGABYTE’s Ultra Durable 3 technology, which feature additional copper inner layers and higher quality components which help to lower PCB surface temperature. Onboard is also the new GIGABYTE Hybrid Silence Pipe 2, which includes a water block, cooler allowing end users to build a liquid cooling system, further helping to reduce the NB Temperature which helps when overclocking to the extreme. Next go to M.I.T. and we will begin our quest for 4GHz. With the Core i7 platform, the CPU clock is calculated by multiplier times Bclk. For example, the i7 920 is rated 2.66GHz, (20X133MHz = 2660MHz). 133MHz is the Bclk, 20 is the multiplier. For the i7 920, the multiplier is locked by Intel, so there is only one way to raise the frequency of the i7 920, and that is to raise the Bclk!. So for our goal of 4GHz, Bclk must be 200MHz.
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