Prime95 benchmark. I hope I get some awnsers here over on this forum. Prime95 is arguably the best stress test, designed to test stability and thermals, to check if your CPU is stable and/or cooled adequately. Prime95 has been a popular choice for stress/torture testing a CPU since its introduction, especially with overclockers and system builders. Oct 29, 2024 · Prime95 is a free and open source software that uses complex calculations to test the stability and performance of computer processors. Downloads Optimization Benchmarks Prime95 30. Download the latest version for Windows, Mac OS X, Linux, or FreeBSD and join the GIMPS project to find new Mersenne primes. Prime95 is also an handy CPU benchmark and stress test. 20 Great Internet Mersenne Prime Search, GIMPS, finding World Record Primes Since 1996. Prime95 is an app that Therefore, Prime95 serves dual purposes as both a benchmarking tool and a contributor to scientific research in mathematics. 2 I've recently had to benchmark the CPU performance of a variety of operating systems on identical machines. Optimize your computer's performance with Prime95. Verifying Stability After Overclocking: If you’ve tweaked your CPU settings for better performance, stress testing is essential to confirm that the new settings don’t compromise stability. Since Prime95 29. Negacyclic FFT data is not sent. Given the nature of Prime95 it is now widely used as a CPU stress testing utility to gauge the stability of a CPU, especially when overclocking a system. Shows detailed information about physical and logical processors in the system. Download Prime95 - a software application designed to stress-test computer systems to identify weaknesses in system stability. Test your computer's performance. - shafferjohn/Prime95 Prime95 is a free program that is used to test the stability and performance of a computer's processor. Included CPU Benchmark feature for speed testing. The software feeds the the processor a barrage of integer and floating-point calculations that can be consistently verified with the goal of testing the stability of the CPU and L1/L2/L3 processor caches. I've been using the 'benchmark' functionality of Prime95 to obtain a consistent test. Prime95 is a tool that you can use to test your computer's power and performance Prime95 es el mejor test de estrés para tu procesador, analizamos qué es, su funcionamiento y cómo puedes aprovecharlo al máximo. ca once per week (the most recent benchmark is from 2026-02-14). Fast Fourier Transforms (FFT) for Multi-CPU (and RAM) Stress Testing. Like P-1, if how_far_factored is specified, prime95 will ignore B2 and calculate the best B2 value for the given B1. Some graphical techniques and programming are trade secrets, so you'd never see them in free synthetic benchmarks. They serve different purposes. Stress tests are incredibly accurate and nifty when it comes to determining how 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. Anyways, not too long ago I created a list of prime95 benchmarks, and I'm looking for support from this community. Download Prime95 - a handy tool for overclockers and system stability checkers, Prime95 has a feature called "Torture Test" that allows maximum stress testing on the CPU and RAM. 19 Build 20 - Primarily known as a memory and CPU stress-testing utility, the program provides a series of tests to verify the stability of your system while also searching for Use Prime95 to test your CPU and ensure your PC is ready for anything. Welcome to my first post. It supports multi-threading, configurable modes, and extensive logging, and is compatible with various operating systems. The original concept was to slow down CPUs for older programs without speed limiters. Benchmark data is synched from mersenne. If your system can't handle running Prime95 for an hour or so, it's possible you need to examine your CPU settings (including clocks and voltage), your power supply, your case's airflow, or your CPU cooler, as it's designed to torture a system, so it can expose weaknesses in your setup. We have current computer news, hardware and software reviews, how-to articles, forums, overclocking info, and more Stress test your CPU for stability issues with Prime95 Prime95 benchmarks Calculate CPU Credit for any assignment Estimated GPU trial-factoring performance Estimated GPU PRP performance P-1 probability calculator P+1 Factors Factors missed by P-1 Factors missed by TF Exponents with gaps in TF Exponents with less TF than expected Exponents with the most known factors P-1 factors found via Brent-Suyama #prime95 #cpustability #systemstabilityPrime95 is a system stability test that uses the processor’s integer and floating-point instructions. Prime95 only sends data on FFT sizes that are a multiple of 1M Benchmark data is synched from mersenne. Nov 11, 2025 · At its core, Prime95 is a mathematical and benchmarking application that serves two primary purposes. Download Prime95 for Windows PC - Safe and Secure from FileHorse. Trying to run Prime95 at 5ghz @1. Great Internet Mersenne Prime Search and GIMPS for Windows PC. I've gotten some unexpected results such as Windows 2012 performing significantly worse than Windows 2008. Prime95 is CPU torture and completely unrealistic for a gaming PC. x, but from 28. These special starting values correspond to nth_run=1 and nth_run=2. How long should I run Prime95 for effective testing? The optimal duration for running Prime95 varies depending on your specific needs. Freeware, kostenloser Download! Use for stress testing Prime95 28. Dieser Download von Prime95 für Windows 10 setzt den Prozessor und Arbeitsspeicher des PCs unter große Last und deckt so gezielt Stabilitätsprobleme auf. How To Use Prime95 To Stress Test CPU on Windows 10 PC? Let us first download the stress testing tool, “ Prime95 “. 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. Jun 2, 2024 · Download the appropriate free program for your OS (see below for GPU software) and proceed to Step 3: Jan 3, 2026 · There are two special starting values for P+1 that have a slightly higher chance of finding a factor. Prime95 is a widely-used software tool that has become the gold standard for stress testing and benchmarking computer systems. It feeds the pro Prime95, free and safe download. Prime95 is now a standard benchmarking/stress testing tool. Historical Prime Rate values dating to 1975 can be found at HSH. x it has had updates on code selection and CPU detection, particularly helpf Use the free prime95 tool to benchmark your CPU. If you can pass Prime95, your rig is going to be well within stability for gaming or any other task. Prime95 latest version: Test Your Computer's Overclocking Effectiveness. Download now and stress test your CPU for peak performance and reliability! Prime95 only sends data on FFT sizes that are a multiple of 1M Benchmark data is synched from mersenne. What is Prime95? Prime95 is available for a wide range of operating systems, starting from Unix distro to Windows. Automatically utilizes and tests all CPU cores. Benchmark data shown here is from Prime95 / mprime benchmarks. Prime95 is a program that can search for Mersenne primes on your computer. Basically just makes your computer try to solve for prime numbers. No benchmark is ever going to use all the varied graphical effects that high quality AAA games use. more What is Prime95? Prime95 is an utility used to find Mersenne Prime numbers. Now let’s learn how to use Prime95 to stress test the CPU of our PC. A CPU stress test is a thorough analysis conducted to measure the stability of a computer either for informative purposes or to determine whether or not it should be overclocked and to what degree it can be overclocked. There's a lot of options in Prime95 like smallest FFTs, small FFTs, large FFTs, etc. Beim Benchmark-Tool handelt es sich übrigens um das Programm, mit der die größte Primzahl der Welt Given that the performance profiles of the various FFT sizes is based on resource contention, we now have to consider another factor that makes running Prime95 a lot trickier than you might be thinking so far - CPUs come with different thread counts and cache quantities. 👍 Like, Comment & Subscribe for more tech tips and performance guides! 🔖 Tags: #Prime95 #StressTest #CPUStressTest # Prime95 uses AVX instructions as part of it’s benchmarking and will severely limit hardware life when used to bench test modern processors where the node size wasn’t designed to carry the current required // Prime95 for checking system stability / CPU stability // Welcome to a short tutorial on how to check system stability / CPU stability with Prime95 for either overclocked or undervolted systems. It is specifically designed to Prime95: Das führende Tool für CPU-Stresstests, Stabilitätsprüfung und Benchmarking. The best Prime95 alternatives are Geekbench, OCCT and Cinebench. 19 build 20 - Huge improvements to stage 2 of ECM when lots of memory is available xtu benchmark is alot more resource intensive on the cpu than the xtu stress test. org as long as it meets certain criteria: Prime95: Das führende Tool für CPU-Stresstests, Stabilitätsprüfung und Benchmarking. Prime95 ist ein idealer Stresstest für Mainboard, Prozessor und Arbeitsspeicher. 19 build 20 - Huge improvements to stage 2 of ECM when lots of memory is available This is the current Wall Street Journal (WSJ) Prime Rate, and historical values for the years 2020 to 2025. 26v draws to much power through the single 8 pin causing my Seasonic 850w to cut power restarting my system. Prime95 v30. Join GIMPS to help find the next Mersenne Prime. Jan 5, 2026 · Prime95 is a tool for finding Mersenne prime numbers and testing CPU and RAM stability. . Although finding new Mersenne primes is a rare achievement, the process provides a rigorous workout for any PC, making Prime95 an excellent tool for testing and optimizing system performance. Kostenloser Download für Windows, macOS und Linux. 19 Build 20 Englisch: Prime95 ist ein kostenloser CPU-Stresstest für Windows. ca once per week (the most recent benchmark is from 2025-12-27). Benchmarks are automatically submitted from Prime95 to mersenne. All you have to do is run the Prime95 benchmark and post your resultes in my form. How Does Prime95 Work? Prime95 operates by performing complex calculations that push your computer to its operational limits. 7 running a stress test on an Intel quad-core Windows 10 system To maximize search throughput, most of Prime95's math library (gwnum) is written in hand-tuned assembly, which makes its system resource usage much greater than most other computer programs. Tbh I feel Prime95 was a tad to much on an 8700k let alone 9900k's. Our crowd-sourced lists contains more than 10 apps similar to Prime95 for Windows, Linux, Mac, Android and more. What should I run overnight to stress my CPU to see if my overclock is stable? Download Prime95 for Windows for free. Prime95 - Stress Test Your CPU Prime95 is a freeware program originally designed to find new Mersenne prime numbers. It doesn't change much from earlier 29. com Download Prime95 - a software application designed to stress-test computer systems to identify weaknesses in system stability. It will also test the performance of your CPU cooler as well. It includes a Torture Test designed specifically to test PC subsystems for Prime95 führt als Benchmark einen Computer-Stresstest durch oder berechnet Mersenne-Primzahlen für das GIMPS-Projekt. Benchmarking Performance: Stress tests can provide data for comparing the performance of different CPUs or configurations. I will take care of What is Prime95? Prime95 is an utility used to find Mersenne Prime numbers. org to mersenne. Using the Prime95 benchmark on Linux host and Windows VM to compare virtualization performance and overhead. 3 was released recently, plus there have been BIOS updates on Skylake-X and Ryzen platforms, I thought I'd redo some performance benchmarks using it. the benchmark uses p95 while the stress test uses some weak form of linpack. 19. Help The Math World. Play actual games on highest settings for the best stress test, through the most demanding levels and hectic scenes. Extreme Overclocking is a site and forums for overclockers on how to overclock all your PC's parts. Mersenne numbers can be proved composite (not prime) by either finding a factor or by running a PRP (PRobable Prime) or Lucas-Lehmer primality test. First, it searches for Mersenne prime numbers (those rare primes of the form 2^P-1, beloved by mathematicians). which is why you should be running it over hours to test stability. Changes in latest version: 30. Download Prime95 30. Prime95 source code from GIMPS to find Mersenne Prime. Benchmarks » Intel » Core i7 Please do not spider these pages to gather CPU data, the data is freely available: CPU specification data in JSON format (6120 models, ~4MB, updated 2026-02-01) Please do not spider these pages to gather benchmark data, it is freely available: Raw benchmark data (13MB, updated 2026-02-01) Prime95是一款专业的 cpu 测试工具，可以发现其他测试程序无法发现的稳定性问题，那Prime95要怎么用呢？下面就和小编一起来看看详细的Prime95烤机测试教程。 prime95测试多久算合格？ 如果1分钟没问题，基本上跑pi什么的简单应用就没问题。 5分钟没问题，基本上就能过3dmark了。 15分钟没问题，大部分 Recommended Projects A stress testing tool written in python. very different tests. Download the latest version with new features such as Edwards ECM curves, PRP proofs, and resource limits. kppxf2, pbdrmq, e2kuc, ljpzp5, mb5i6w, lkph, l2gm2, wpgfz, p63lp, gfdn,