ASROCK X79 Extreme7 Manual De Instrucciones página 52

2.18 Untied Overclocking Technology
This motherboard supports Untied Overclocking Technology, which means during
overclocking, BCLK enjoys better margin due to fi xed PCI / PCIE buses. Before you
enable Untied Overclocking function, please enter "Overclock Mode" option of UEFI
setup to set the selection from [Auto] to [Manual]. Therefore, BCLK is untied during
overclocking, but PCI / PCIE buses are in the fi xed mode so that BCLK can operate
under a more stable overclocking environment.
Please refer to the warning on page 9 for the possible overclocking risk
before you apply Untied Overclocking Technology.
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ASRock X79 Extreme7 Motherboard