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Is there anything free and better than Prime 95?

A

Anarchist420

Diamond Member
I wanted to undervolt my PII 555 (to about 1.22-1.25vcore) and OC to 3.4 or 3.5GHz. What's the best free program to test for stability? Prime 95 takes too long.
 
I personally like OCCT and Linx but still run prime95 as well. they seem to catch different stability problems so running all three gives more assurance.
 
OCCT is my favorite, comes with linpack integrated as well and a temp monitor, good stuff. has a GPU tester as well
 
LinX is my favorite, stresses harder than any other program I've used. Use the "all memory" option and do 50 loops and you'll be golden 😀
 
I like OCCT Linpack. There are some issues with Linx where if you start getting problems in the realm of instability, it'll start working less and less hard. I've seen good days where I get 54+ gflops, but bad days where I'm in the 40s or even 30s. I then restart and see a different set of numbers.

So I just started using OCCT Linpack since then. Just as effective.

Prime is a meh, but I just ran it last night to prove I'm stable after being 6-8 hours OCCT Linpack stable. I'm around 3-5C lower on Prime 95 than in OCCT Linpack.
 
If you wanna test quickly to at least maybe find the magic voltages needed start out with Intel Burn Test. It'll hit the CPU most likely the hardest and is a great cooling system tester also. It'll error out within seconds on the default settings if unstable. Once you get passed the standard settings maybe try max memory. The default 5 runs should get you started. I kinda like to do the custom and set it for something low like 256mb or so and do like 500 runs also. I do this one just to see bandwidth consistency. But voltages required may need slightly adjusted to pass somethng like OCCT. I start with IBT as it kinda sucks getting an error after 52 minutes or so of OCCT. Best to try as many of them as possible. Sometimes it'll pass on stress test but not others. Most of the time it's just a little bump in voltages.
 
Iono, I think IBT, OCCT Linpack and Linx work about the same way. Linx needs to be running properly though, and I believe it sometimes doesn't.

The traditional OCCT torture test is a notch better than Prime 95 I think but not as good as the Linpack or Linx/IBT.

I just prime stabled 8 hrs and Linpack tested for 6 hours. I think I'm pretty much there. Now I just gotta find a lazy weekend where I leave it on for 24+ hours.
 
It is ideal to use a few testing programs to benchmark stability. Like evolucion8 said, sometimes one program finds errors while another seems to be running fine.
 
it depends on how stable you have to be. are you just gaming?. or are you getting paid to run telemetry for n.a.s.a. or something like that?
 
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