MSI Z87-XPOWER manual Voltage Checkpoints, FV1 V-Check Connectors, Chapter

Voltage Checkpoints

These voltage checkpoints are used to measure the current system voltages. A multimeter (not included) will be required to check voltages.

FV1: V-Check Connectors

To check the voltage, please use the optional voltage checkpoint cables included in the motherboard package. Attach the positive lead of the multimeter to the voltage checkpoint cable and the negative lead to the ground connector.

7	GND
	CPU_SA
	CPU_RING
	CPU_GFX
	CPU_CORE0
	VCC_DDR
1	VCCP

Connector	Description
GND (pin 7)	Ground
CPU_SA (pin 6)	The CPU_SA (CPU System Agent) voltage is the voltage
	supplied to the integrated memory controller inside the
	CPU.
CPU_RING (pin 5)	The CPU Ring is an interface for integrated controllers
	inside the CPU. The CPU Ring voltage can affect the CPU
	overclocking performance.
CPU_GFX (pin 4)	The CPU_GFX voltage is the voltage supplied to the
	integrated graphics processor located on the CPU.
CPU_CORE0 (pin 3) CPU core0 voltage. The CPU voltage is the voltage
	supplied to the CPU core0. Higher overclocks may require
	higher CPU core0 voltages to maintain stability.
VCC_DDR (pin 2)	Memory voltage. The DDR memory voltage is the voltage
	supplied to the DDR memory modules on the motherboard.
	Lower memory timings may require higher voltages to
	maintain system stability.
VCCP (pin1)	The CPU VCC input voltage is the CPU power source that
	is shared with components of the CPU.

Chapter 1

1-31 Getting Started