Fans/Peripherals – You may want to include add-ons like a sound blaster card or RGB case fans.
Remember that sometimes these can be attached to the motherboard.
Solid State Drive (SSD) – You need to know the size (GB) of each solid state drive that you currently have within your build or that you would like to include.
7200RPM) of each hard drive that you currently have within your build or that you would like to include. Supports amps, milliamps, watts, kilowatts, megawatts, volts, millivolts and kilovolts, ohms, kiloohms, and megaohms. Enter any two parameters to calculate the other two.
Hard Drives (HDD) – You need to know the size (inches) and RPM (e.g. Use this Ohm's Law calculator to easily calculate the power, resistance, voltage, or electrical current, based on two known parameters.
Also make sure that you know the optical media type (Blu-ray, CD-ROM, etc.) of your optical drive.
#POWER PHYSICS CALCULATOR PC#
Optical Drive – If your PC build includes an optical drive, be sure to include this in your calculations.
Memory (RAM) – Always know the number of memory sticks that your motherboard can support as well as the size (GB) of each one.
This means that for every extra joule that is transferred per second, the power increases by. Most PSUs will have at least one cable that is compatible with either an 8-pin or a 6-pin connector. One watt is equal to one joule per second (J/s). So make sure your PSU has enough cable to support that. It’ll be either 6, 8, 6+6, 6+8, or 8+8-pins – and that's per GPU.
Graphics Processing Unit (GPU) – You will need to account for the actual power draw and the number of additional power pins a GPU may have.
Central Processing Unit (CPU) – Be sure you know the make, model or series, and socket size.
This is a critical component of your calculations because almost everything within your build plugs into and derives power from the motherboard.
Motherboard – Be sure you know what kind of motherboard (Desktop, Server, Laptop, etc.) your build currently has or what form factor you want to put in your new build.
Here’s a complete list of items that you need to consider when calculating your power supply needs. Before you decide what power supply to buy, it is crucial that you know all the components that you currently have within your build or the ones that you would like to include.