Computer components that receive power from the power supply unit (PSU) have preset voltages. Overclocking voltages affects the run speed of your computer. The memory (RAM) voltages can be determined for overclocking using a third party application that provides analysis on your system's performance and running. Various system diagnostic checkers will provide this information.
- Skill level:
Download CPU-Z (see "Resources"). Right-click the downloaded zip file and click "Extract," and then double-click the program icon to launch the program. Click the "SPD" tab and then (if you have more than one stick of RAM) select the slot you want to check. Read the "Voltage" numbers at the bottom of the "Timings Table." Click "OK" to close CPU-Z.
Download SpeedFan (see "Resources"). Double-click the download then launch the program from the "Start" menu. SpeedFan will display the voltages at the bottom of the program. SpeedFan does measure voltages of your RAM, though it may not always label them correctly. Recognise that RAM should be running between 1.8V and 2.3V so look for the "Vcore" figure in between those two figures.
Download Everest Diagnostics (see "Resources"). Double-click the download, then load the program from the "Start" menu after set-up. Click the ">" button next to "Motherboard," then click "Memory." Scroll through the fields until "Core Voltage" is displayed. Everest is a paid-for application that performs a wider array of diagnostics than does its freeware competitors.
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