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1. #Cpu stress test prime95 how to
2. #Cpu stress test prime95 install
3. #Cpu stress test prime95 download
4. #Cpu stress test prime95 windows

Torture Test" window and make sure "Blend" is selected. Test has allocated too much memory then stop the test and bring up the "Run a

#Cpu stress test prime95 windows

If you're running Windows 2000 or Windows XP then you can alsoĬheck whether the CPU is fully utilized in the task manager. The blend test is running properly, the hard disk is only accessed Working properly if the hard disk activity light is on most of the time. Test because the CPU isn't doing anything while it is waiting for the hardĭisk to access the data whereas the test is really supposed to be keeping theĬPU busy at all times in order to stress it. Memory and the test ends up accessing the hard disk a lot. When that happens, Windows has to use virtual Of Prime95, the blend test allocates more memory than can fit into the Note that on some computers running some versions This is the version of the test which is most likely toįail if you have bad RAM. Theīlend test automatically picks a "Memory to use" value which uses up all the The FFTs are not run in-place so the tests cycle through RAM. The "Blend" test uses FFTs with sizes which range from very small to very It only accessesĪ relatively small amount of main memory because it runs the FFTs in-place so Into the CPU cache so this test accesses main memory a lot. The "In-place large FFTs" test uses relatively large FFTs which cannot fit Prime95 automaticallyĬreates a FFT size range which will fit into the L2 cache of your CPU. The least but it still makes some memory accesses. The "Small FFTs" test uses relatively small FFTs which can fit into the CPUĪs a result, the small FFT test is the one which accesses your main memory Tests and the total amount of RAM used is the value in "Memory to use (in The box is unchecked then Prime95 cycles through RAM as it runs through the Same RAM area over and over and only uses enough to do the calculations. If the "Run FFTs in-place" box is checked, then the results of the FFTs are Through the sizes within the min to max range until it gets an error or you Size for that long, it moves on to the next size. Time Prime95 spends running FFT tests of a given size. The "Time to run each FFT size (in minutes)" value controls how much Make sure that aĬustom range always includes at least one size from the list. Prime95 (versionĢ3.8.1 and maybe others) has a bug which causes the program to hang if youĮnter a range which doesn't include any sizes from the list. Which fall within the min to max range which you've entered. When testing, Prime95 cycles through the sizes in the list

Prime95 is not actually capable of doing FFTs of anyĪrbitrary size. The size value times 1024 is actually the number of The sizes you select are not the amount of K)" and "Max FFT size (in K)" allow you to pick the minimum and maximum size The "Custom" test allows you to create your own test. It's used in Prime95 to quickly calculate the square of very In case you're interested, "FFT" stands for You run? The answer depends on what you're trying to do. So the obvious question is: which test should The torture test window presents you with three ready-made tests and an If it crashes or finishes with an error as shown above, then you've got a It's also been known on occasion to crash unstable machines. Prime95 checks its calculationsĪgainst known results so if something goes wrong it will stop automatically. The example above shows a successful run. Test, click the "Test" menu and then click "Stop". If you want to be thorough then let it run for 24 hours. Which is the best test to run for single core CPUs. To test your computer, run Prime95 and click the "Options" menu and then But if you would like to contribute some spareĬPU cycles to help find prime numbers, by all means press the "Join GIMPS" When you run it for the first time, click the "Just Stress Prime95 is a distributed program which spreads the work among large numbers

#Cpu stress test prime95 download

The program is free and you can download it Your CPU and the parts of the motherboard which interface with the CPU and Run Prime95 for 24 hours without any errors, then you can usually assume that You're not sure which component is causing the problem. This is a very useful characteristic if your computer is flakey and Which are the interface between your CPU and RAM, then Prime95 has a tendency It hasĪlso gained a reputation for getting errors on computers which are even Prime95 is a program which searches for very large prime numbers. Last updated: JTorture test your CPU with Prime95 Installation And Running Tests Create a system restore point in case something goes wrong.

#Cpu stress test prime95 how to

How to find specifications for your computer.

#Cpu stress test prime95 install