Power Supply Unit (PSU) Calculator

Power Supply Calculator result

Whether you're building a gaming PC, a server farm, or even just a personal workstation, knowing how much power your components will draw can help you make informed decisions about energy efficiency, system stability, and environmental impact.

Power supply image

Thermal design power by components

One of the key metrics used in calculating power usage for electronic components is the Thermal Design Power (TDP). It represents the maximum amount of heat that a component, such as a CPU or a GPU, is expected to generate under typical workloads. It's expressed in watts and serves as a guideline for system builders to choose appropriate cooling solutions and power supplies.

# Component type Name Wattage Item count Total Wattage
1. Processor AMD Phenom II X4 955 125 W x 1 125 W
2. Graphic card AMD Radeon HD 7870 175 W x 1 175 W
3. Motherboard High-end Desktop Motherboard 70 W x 1 70 W
4. Random access memory DDR2 10 W x 4 40 W
5. Data storage SSD SATA 3 W x 1 3 W
6. Data storage HDD SATA 12 W x 1 12 W
7. Optical drives CD Drive 25 W x 1 25 W
Total configuration wattage 450 W

Recommended power supply wattage

Please note that if you are purchasing a power supply from a lesser-known brand or one with lower efficiency, it is advisable to opt for a power supply with a higher wattage than the recommendation provided here. This precaution can help ensure reliable performance and prevent potential issues related to power delivery.

Total Thermal Design Power: Optimal Component Heat Management

In this configuration, the combined thermal design power (TDP) of all components stands at 450 watts. TDP serves as a critical parameter, representing the maximum heat generation potential under regular workloads. By considering the total TDP, you ensure that your cooling solutions are adequately equipped to maintain optimal temperatures, promoting prolonged component lifespan and system stability.

Essential Power Supply Thresholds: Sustaining Performance

For seamless operation, it is essential to provide ample power reserves. The minimum power supply wattage required for this setup is 525 watts. This baseline threshold guarantees that your components receive the energy they need to function reliably, even during demanding tasks. Ensuring your power supply meets this minimum requirement is the first step toward achieving consistent performance and minimizing the risk of power-related issues.

Recommendation for Enhanced Reliability: Higher Wattage Consideration

To unlock the full potential of this configuration and accommodate potential expansion or overclocking, it is strongly recommended to invest in a power supply with a wattage of 600 watts or more. This additional headroom not only bolsters your system's stability but also safeguards against overloading the power supply during peak usage. Selecting a power supply with a greater wattage than the minimum can pave the way for a smoother computing experience and protection against unforeseen power demands.

Distribution of power based on component types

This analysis examines how power is allocated across various component types within the system configuration.

Out of a recommended power supply wattage:

  • 27.78 percent goes for Processor (166.67 W)
  • 38.89 percent goes for Graphic card (233.33 W)
  • 15.56 percent goes for Motherboard (93.33 W)
  • 3.33 percent goes for Data storage (20 W)
  • 8.89 percent goes for Random access memory (53.33 W)
  • 5.56 percent goes for Optical drives (33.33 W)