2.12.2 Installing Windows® 7 / 7
If you want to install Windows® 7 / 7
Using SATA3 HDDs without NCQ and Hot Plug functions (IDE mode)
STEP 1: Set up UEFI.
A.Enter UEFI SETUP UTILITY 
Advanced screen 
Storage Configuration. B.Set the option “SATA Mode” to [IDE].
STEP 2: Install Windows® 7 / 7
Using SATA3 HDDs with NCQ and Hot Plug functions (AHCI mode)
STEP 1: Set up UEFI.
A.Enter UEFI SETUP UTILITY 
Advanced screen 
Storage Configuration. B.Set the option “SATA Mode” to [AHCI].
STEP 2: Install Windows® 7 / 7
2.13 Untied Overclocking Technology
This motherboard supports Untied Overclocking Technology, which means during overclocking, FSB enjoys better margin due to fixed 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, CPU FSB is untied during overclocking, but PCI / PCIE buses are in the fixed mode so that FSB 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 990FX Extreme3 Motherboard