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The first overclock results of extreme processors core i7 was average. In this case the members of xtremeSystems achieved a good results using core i 7-920 (2.66 GHz). In this case the motherboard EVGA on base of Intel x58 chipset allowed to overclock the series processor to 4.3 GHz with the use of air cooler : tuniq tower, and using the regime turbo boost ensured reaching the frequency 4.54 GHz.
The bus frequency in this case was equal to 216.5 MHz, and the multiplier grew up to 21x from its default value 20x. Now the majority of Core i7 owners notes that 220 MHz is the FSB limit .
Associate with the reference to Intel recommendation report that the increase of QPI voltage over 1.315 v is undesirable. Note also the recommended limit for the memory voltage is 1.65 v i, while for the processor core it is 1.55 v.
One owners of engineering model core i 7-920 (2.66 GHz) was able to reach the BUS 229 MHz using a motherboard from gigabyte production . Increasing the processor multiplier to 21x allow to reach the frequency 4823 MHz. In this case the processor was cooled by some extreme phase change unit or liquid nitrogen. Related Products :
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