The voltage of the CPU supply, based on the provided reference for a CPU Power Supply, is 12v. This refers to the voltage output by the power supply component that feeds the CPU and other system parts.
Understanding CPU power involves recognizing the difference between the input voltage required by the power supply unit (PSU) and the output voltages it provides to the computer's components, including the CPU.
CPU Power Supply Voltages
The reference specifies two key voltages for a CPU Power Supply:
| Voltage Type | Value | Description |
|---|---|---|
| Output Voltage | 12v | Voltage supplied to components |
| Input Voltage | 110v | Voltage received from the wall |
The input voltage (110v in this specific reference) is the voltage drawn from the electrical outlet. The CPU Power Supply Unit (PSU) then converts this high AC voltage into lower, stable DC voltages required by different components within the computer.
Output Voltage Explained
The crucial voltage for the CPU itself is the Output Voltage. Modern computer components, including the CPU, primarily utilize 12v from the PSU, along with other voltages like 5v and 3.3v for different parts.
- 12v Rail: This is the most important rail for powering demanding components like the CPU and graphics card. The reference explicitly states the output voltage as 12v, indicating this is the main supply voltage provided by this specific unit to the system's high-power components.
It's important to note that while the main 12v rail powers the CPU, the CPU itself often uses integrated voltage regulators (VRMs) on the motherboard to convert the 12v down to the much lower voltage required by the CPU core (Vcore), which can vary depending on the CPU model and load, typically ranging from under 1v to around 1.5v. However, the supply coming from the PSU that the motherboard VRMs use is primarily the 12v rail. The reference specifically names the component as "CPU Power Supply," and its stated output voltage is 12v, making this the direct answer based on the provided information.
