Prime95

Prime95

Prime95 download for free to PC or mobile

Prime95 is a powerful tool designed to test your computer's performance through complex mathematical operations. It works by searching for Mersenne prime numbers, utilizing significant memory resources until manually stopped. Depending on your initial test selection, Prime95 can evaluate your machine's RAM or processor. Note that older computers may experience significant slowdowns during testing. While Prime95 may lack an attractive interface, it excels in its primary function, making it an essential utility for optimizing your computer's performance. Ideal for enthusiasts and professionals alike, Prime95 ensures your system is running at its best.

05 Jun 2024
Title Prime95
Size 9.9 MB
Price free of charge
Category Applications
Developer Mersenne Research
System Windows
9.9 MB
4
908 reviews
2762
downloads
The content of games with a PEGI 3 rating is considered suitable for all age groups. The game should not contain any sounds or pictures that are likely to frighten young children. A very mild form of violence (in a comical context or a childlike setting) is acceptable. No bad language should be heard. Equivalent to E (low end) and EC (which is no longer used). 435 titles were rated PEGI 3 in 2020.
PEGI Rating

Prime95 installation

download

Click on the Download button to start downloading Prime95 for Windows from Maombi.com

open

Open the .exe installation file in the Downloads folder and double click it

props

Follow the instructions in the pop-up window to install Prime95 on Windows Desktop

run

Now you can open and run Prime95 on your PC

Prime95 Features

Prime95 is a powerful and versatile application designed for stress testing and benchmarking your computer's CPU. With its intuitive interface, users can easily monitor system stability, performance, and temperature. This essential tool also allows for advanced customization and fine-tuning, making it ideal for overclocking enthusiasts and tech-savvy users. Whether you're a gamer, content creator, or simply want to optimize your PC's performance, Prime95 is the ultimate solution for pushing your hardware to its limits.

CPU Stress Testing

Prime95 is known for its ability to stress test CPUs by running complex mathematical calculations to ensure stability and performance under heavy loads.

Overclocking Validation

Users can use Prime95 to validate the stability of their CPU overclocks by pushing the processor to its limits and checking for errors or crashes.

System Stability Testing

Prime95 can be used to test the overall stability of a system by stressing the CPU, RAM, and other components to ensure they can handle heavy workloads without issues.

Benchmarking Performance

With Prime95, users can benchmark the performance of their CPU by comparing results with other systems and identifying areas for improvement.

Temperature Monitoring

Prime95 includes features for monitoring CPU temperatures during stress tests to ensure that the system stays within safe operating limits.

Error Checking

Users can use Prime95 to check for errors in their system by running stress tests and identifying any issues that may arise under heavy workloads.

Prime95 overview

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    01

    An application for testing Mersenne numbers and benchmarking your computer. Version 25.11 offers continuous self-testing to ensure system stability. Enter the time parameter and the number of iterations to run the test. The application provides detailed reports on test progress, including Lucas–Lehmer iterations for Mersenne numbers using an 8K FFT.

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    02

    An application for testing your computer's performance. It starts a continuous self-test to verify the system using iterations of the Lucas–Lehmer test. Program version 25.11. The application recommends reading the file stress.txt and selecting Test/Stop to end the test. Ideal for checking the stability and reliability of your hardware.

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    03

    An application for testing your computer's performance. Configure the number of iterations between screen outputs and the results written to files, and set the minutes between saves. You can configure the number of backup files and enable notifications for found prime numbers. Works even when running on laptop battery power. Start continuous self-testing and verify your system's stability.

Prime95

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Prime95 reviews

Update: 02 Jan 2026

ChloeYoung

Prime95 has been a good companion for my system. I appreciated how it finds issues! However, it can get kinda technical, and the interface is a bit outdated. Still, it does the job well, so I can’t complain too much.

SarahBennett

OMG, Prime95 is AMAZING! My PC has never run smoother. The stress test really pushed my system, and I loved every moment! I’m literally blown away by how effective it is! Gonna recommend it to all my buddies! This is my new favorite app for sure!

DanielScott

Prime95 is what I didn’t know my PC needed! I was having issues, and it pointed everything out. I’m so relieved! It’s simple, effective, and free! Truly, a savior for anyone who cares about their build! Love it!

JamesLee

I'm pretty happy with Prime95 overall. The stress tests do help keep my CPU in check. I wish there were more detailed guides on how to use it effectively, but I can’t complain too much. It works just fine!

DavidClark

Wow, Prime95 is like a superhero for my computer! It's a total game-changer. It handles everything I throw at it with no hiccups. I use it all the time, and it's just so reliable. Can't imagine my life without it now. You're the best!

BrianCarter

So far, I think Prime95 is decent. It has its perks, like stability testing. But the setup is kinda tricky and leaves me wondering if I'm doing it right. Not sure if I'd recommend it completely, but I'm using it!

EllaHernandez

Using Prime95 was a decent experience, but I hit a few quirks along the way. It’s great at finding errors, but sometimes it doesn’t seem very intuitive. I think it helps, just wish it was more user-friendly overall.

SamanthaGarcia

Prime95 is pretty solid! It stress tests well and is surprisingly fast. I'm a little hesitant, though, as it occasionally runs into issues on my older system. But overall, I’m satisfied for the most part!

EmilyTaylor

Simply put, Prime95 rocks! I've experienced zero crashes since using it. It’s a joy to see my system perform at its best! Big shoutout to the devs for creating such a stellar tool. Can’t recommend this enough!

WilliamMitchell

Prime95 is okay. While it does what it claims, I'm a bit lost with the interface and some features might be overwhelming. I like it, but I can’t say it’s perfect. Needs a few improvements for sure!

MichaelJohnson

Prime95 is everything I hoped for and more! It found issues in my CPU that I didn't even know existed. The interface is super easy to use. I’m officially in love with this app, best decision ever! Just wow!

OliviaNelson

I have mixed feelings about Prime95. The stress test is effective, but the lack of explanations for some settings is frustrating. I’d recommend it, but suggest going in with some patience and a keen eye on settings!

JessicaWilson

Prime95 is absolutely phenomenal! My gaming experience has skyrocketed since I started using it. Stress tests are so satisfying to watch! I feel like a tech wizard now. Hats off to the team! You guys rock!

LiamPhillips

Prime95 has its highs and lows. The tool does validate system stability, but it took me a while to get used to it. I can appreciate the power it has, just not sure if I consider it a go-to tool yet!

NicoleRobinson

Really loving Prime95! Its stress testing is precise, and I can finally see how my hardware performs. It’s a little intimidating at first, but once you get the hang of it, it’s a breeze. Solid app, for sure!

KevinMoore

This is hands down the best stress testing software out there! Prime95 has amazed me! I didn't think I'd be this excited about a benchmark tool. It’s worked flawlessly, keeping my hardware in check. Just perfect in every way!

LauraAdams

Prime95 is truly a masterpiece! I'm loving how well it tests my CPU. It’s reliable and easy to use. I’ve already told my friends about it, and we’re all obsessed! The best part? It's free! Like seriously, amazing!

RyanHarris

No joke, Prime95 has been a lifesaver for me. My rig runs like a dream, and the testing options are just epic! I'm so happy I found this, it’s the tool I didn’t know I needed! Seriously, what are you waiting for?

MeganThompson

AHHH, Prime95 is INCREDIBLE! I’ve been stress testing for fun, and it’s so cool! Who knew pushing my PC to the limit could feel so exhilarating? Honestly, if you haven’t tried it yet, you’re missing out big time!

JacobMartinez

I had a good experience with Prime95. The software is reliable when stress testing, but sometimes I find the settings confusing. Hoping for a more user-friendly update down the road. Still worth using, though!