Biostar TZ68A - PCH Voltage

TZ68A+ UEFI BIOS Manual
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Vcc SA
This item sets CPU System Agent (memory controller, DMI, PCIe controllers, and
disp lay engine) po wer s upp ly.
PCH Voltage
This item sets PCH Voltage.
Vcc IO
This item sets CPU High frequency I/O logic power supply.
DDR3 Slot 1/2/3/4 Information
These items display SPD information of DDR3 memory.