If you're mapping a given executable and you have access to more information about the CPU then you may be able to use some equations from frequency scaling to get a power profile.
For instance, the power consumption of a processor is estimated by:
where P is power, C is the capacitance being switched per clock cycle, V is voltage, and F is the processor frequency (cycles per second).
Answer from Samuel on Stack ExchangeIsunshare
isunshare.com › computer › how-to-measure-cpu-power-consumption.html
Methods to Measure CPU Power Consumption
We'll walk you through 3 ways to measure CPU power consumption, including checking TDP through the computer manufacturer websites, measuring power consumption via the PSU calculator tools and check real-time power consumption via applications.
Reddit
reddit.com › r/windows › measure cpu power consumption
r/windows on Reddit: Measure CPU power consumption
October 17, 2022 -
Hello,
I would like to know if there is any parameter on the performance monitor that will track the CPU power consumption in watts or milliwatts.
I know there are some external tools but I would like to use any direct OS.
How to compute CPU power consumption - Electrical Engineering Stack Exchange
After all power is also consumed by all of these components as well and in almost all cases this other power scales to some degree with increased compute load placed on the CPU. That said what you really want to do is get yourself a power meter that can measure the power to your whole system ... More on electronics.stackexchange.com
How to measure power consumption?
What's the preferred way to measure system or CPU power usage, aside from "at the wall"? Do you have any product recommendations to share? ... Click to expand... HWinfo64? 🤔 Others include, but are not limited to: power consumption meter at the wall (between wall socket and PC power plug). More on forums.tomshardware.com
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May 30, 2023Full CPU power consumption | HWiNFO® Forum
Tell me how the total CPU power consumption is calculated More on hwinfo.com
How can I measure how much TOTAL WATTAGE my computer is pulling from the PSU ?
Buy a Kill-A-Watt, they're like $15 and measure power consumption. No software is going to be very accurate.
More on reddit.com 13
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August 1, 2022Videos
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How to Check PC Power Consumption in Windows 11 - YouTube
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How To Check PC Power Consumption In Windows 11 | Monitor Wattage ...
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How to Check PC Power Consumption in Windows 11 (2026) - YouTube
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Your Electricity Bill Doesn't Tell You This About Your PC - YouTube
Tom's Guide
tomsguide.com › computing › software
How to measure your PC's power usage | Tom's Guide
July 22, 2024 - Locate and check CPU Package Power to view the total CPU consumption. You'll be able to see current, minimum measured, maximum measured and average measured.
GeeksforGeeks
geeksforgeeks.org › techtips › how-to-measure-your-pcs-power-consumption
How to Measure Your PC's Power Consumption - GeeksforGeeks
March 18, 2026 - You can estimate power consumption by adding the rated wattage of each component. List the power ratings of your CPU, GPU, RAM, storage, motherboard, and peripherals. Find wattage values from official product specifications.
Digital Trends
digitaltrends.com › home › computing › how tos
How to measure your PC's power use, and why it matters - Digital Trends
February 21, 2024 - Simply plug it in, plug your PC's power cable into it, then turn your PC on. The power use will be displayed on the Kill A Watt meter. Generally speaking, both a computer’s CPU ...
TechSpot
techspot.com › guides › 2641-measuring-power-guide
How to Measure Your PC's Power Consumption | TechSpot
April 17, 2023 - For example, this ElmorLabs PMD-USB has two 8-pin EPS sockets for measuring CPU power and three 8-pin PCIe sockets for recording how much power a graphics card demands. These are really only of use to hardware testers and system builders, and a combination of software and wall socket meters are more than enough for the vast majority of PC users looking to measure power consumption.
Top answer 1 of 3
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If you're mapping a given executable and you have access to more information about the CPU then you may be able to use some equations from frequency scaling to get a power profile.
For instance, the power consumption of a processor is estimated by:
where P is power, C is the capacitance being switched per clock cycle, V is voltage, and F is the processor frequency (cycles per second).
2 of 3
2
I can recommend you to have a look to the PowerAPI tookit, a middleware library that estimates the power consumption of the CPU in real-time. You can even have an estimation of the power consumption per process. PowerAPI does not require any third-party power meter to be connected (unless you need a custom power model).
AsapGuide
asapguide.com › home › how to check your pc power consumption
How to Check Your PC Power Consumption (3 METHODS)
October 16, 2023 - In the screenshot above, you can see how much power my CPU is drawing at the current moment. Additionally, it shows the minimum, maximum, and average power consumption for any given session. Another alternative that is worth checking out is Joulemeter, a Microsoft Research project that estimates the power usage of your PC based on hardware sensors. It’s able to quite precisely measure ...
GitHub
github.com › sosy-lab › cpu-energy-meter
GitHub - sosy-lab/cpu-energy-meter: A tool for measuring energy consumption of Intel CPUs · GitHub
CPU Energy Meter is a Linux tool that allows to monitor power consumption of Intel CPUs at fine time granularities (few tens of milliseconds).
Starred by 344 users
Forked by 31 users
Languages C 73.8% | Ruby 18.8% | Makefile 4.7% | Shell 1.2% | Dockerfile 1.1% | Jinja 0.4%
NIPOGI
nipogi.store › home › pc running hot? here’s how to check your actual cpu power consumption
How to Measure Actual CPU Power Consumption – NIPOGI
January 20, 2026 - How to test for peak draw: To see your absolute maximum power consumption, leave HWiNFO64 running and run a synthetic multi-core stress test like Cinebench R23/2024 or Prime95 (Small FFTs) for 10 minutes.
MS.Codes
ms.codes › blogs › computer-hardware › how-to-measure-cpu-power-consumption
How To Measure CPU Power Consumption
February 14, 2024 - One approach is to use specialized power measurement tools that directly measure the power consumed by the CPU. These tools typically involve hardware components connected to the CPU and provide real-time power consumption data.
Techidream
techidream.com › how-to-check-cpu-power-consumption
How to Check CPU Power Consumption (Watts) – Easy Methods 2025
December 31, 2025 - You can check CPU power consumption in watts using tools like HWiNFO, HWMonitor, or built-in Windows features. These tools show real-time CPU wattage, voltage, and temperature to help track efficiency and performance.
Top answer 1 of 4
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What's the preferred way to measure system or CPU power usage, aside from "at the wall"?
HWinfo64? :unsure:
Others include, but are not limited to: power consumption meter at the wall (between wall socket and PC power plug). <- Have that (namely MacLean Energy MCE06 230V/16A wattmeter). Bought it prior buying UPS, to know how beefy of an UPS i need.
Another option is UPS that has LCD display. So you can look exactly how much power is delivered via UPS to PC. Aka how much power your PC consumes. For added convenience, UPS that connects to PC via USB cable, so you can check the power consumption from software, either dedicated one or from HWinfo64. <- Have that too (CyberPower CP1300EPFCLCD).
Overall, there is no "preferred" one. Use what you trust.
2 of 4
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I'd read about a PSU with built-in monitoring capabilities, but I couldn't remember which one.
Corsair AXi isn't the only one. Others include Asus ROG Thor and NZXT E-series.
Digital monitoring of PSU is neat, but including it to PSUs will jack up the price even more. So, this currently is still in niche segment.
The Windows Club
thewindowsclub.com › the windows club › downloads › how to measure your pc's total power consumption
How to measure your PC's total power consumption
March 27, 2025 - Now, open your computer, and the Power Meter will tell you how much power your PC is consuming. This will be an accurate result that no software can match. Add TheWindowsClub as a Preferred Source on Google Search · Read: What to do when your ...
Basalt
hardwarehub.basalt.cc › blog › measuring-cpu-power-consumption-tools-techniques-53
Measuring CPU Power Consumption: Tools and Techniques | Computer Hardware Hub
May 23, 2025 - CPU power consumption is typically ... estimation, and simulation. Direct measurement involves using specialized hardware, such as power meters or current probes, to measure the actual power consumption of the CPU...
CGDirector
cgdirector.com › home › hardware › how to check your pc’s power consumption [4 methods]
How To Check Your PC’s Power Consumption [4 Methods]
November 11, 2023 - It is worth noting that this calculator uses the peak power consumption of each component you enter, so you’re basically getting the “worst case” scenario, when all your PC’s components are under full use and not idling. And since your PC’s CPU and GPU probably won’t be 100% utilized use all the time, you’ll also want to know how much power it draws when sitting around idly or when you’re just browsing the internet or working on a document.
Newegg
newegg.com › tools › power-supply-calculator
PC Power Supply Calculator – PSU Wattage Calculator | Newegg
A power supply calculator is a tool that estimates the wattage and amperage your custom PC build needs based on the components you select. Choose Newegg's PC power supply calculator to build the perfect computer for your needs. Select the components you want, such as the CPU, GPU, and motherboard, and use our PSU wattage calculator to ensure each component receives the right amount of power.
HWiNFO
hwinfo.com › home › forums › general › general discussion
Full CPU power consumption | HWiNFO® Forum
February 28, 2024 - Click to expand... Hi! I am interested in how HWiNFO64 determines the total CPU power consumption. The user's initial data 13900k cooler Ultra 120EX REV.4 WHITE The screenshot shows the results Total power consumption 371W I can't believe that such a cooler can take away so much heat.
Tom's Hardware
tomshardware.com › pc components › cpus
Measuring CPU Power Consumption With Different Stress Tests
August 16, 2020 - This guide shows you how to stress test your CPU by examining which configurations produce the largest possible loads and which waste the most heat.
UMA Technology
umatechnology.org › home › how to measure cpu power consumption
How To Measure CPU Power Consumption - UMA Technology
January 22, 2025 - Architecture: Different CPU designs (e.g., Intel vs. AMD) have varied power ratings and efficiency structures. Clock Speed: As clock speeds increase, so too does power consumption. Higher frequencies typically lead to greater energy use. YEREADW USB C Tester Power Meter, 4-30V 0-12A Type-C PD Tester Digital Multimeter, Voltage and Current Tester Meter Voltmeter, Power Bank Capacity USB Cable Charger Detector (KWS-2303C) Improved Measurement Accuracy: Our USB C Tester can accurately measure accuracy: ± (1%+5).