Questions tagged [prime95]

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How To Add Seconds To Date/Time Format of Prime95 Logging?

Prime95's default log format is MMM dd hh:mm e.g. Feb 26 07:16. I am using Thread Switcher for stability testing which works well switching every 5 seconds. I've had to increase this to 120 seconds in ...
1 vote
1 answer
115 views

How can I give temperature monitoring absolute priority over stress testing?

I am trying to stress test my home-built NAS for cooling problems. Since neither stress, nor FIRESTARTER nor mprime95 look after the temperatures, I want to write a small script that kills all of ...
0 votes
0 answers
78 views

Prime95 larger FFT crush on Transmeta CPU

When I try to run Prime95 on a HP T5710(CPU is Transmeta TM5700@800Mhz), it works fine as long as FFT is not larger than 32k, it will immediately crush if FFT size equal or larger than 48k (only ...
9 votes
1 answer
8k views

In Prime95, why do small FFTs generate the most heat, despite CPU at 100% for all options?

I've just built a new Skylake PC, and I'm going to see about a bit of overclocking with Prime95 as a stress tester. It works fine in normal use, but with Prime95 I'm noticing a bit of CPU throttling ...
2 votes
0 answers
186 views

View laptop power consumption without running it on battery

My laptop has a bad battery (lasts 20 - 30 minutes of normal use) but I need to see the max power consumption.I tried running Prime95 + Furmark on battery with power saving off (which took 50 watts ...
5 votes
3 answers
13k views

What to do when machine fails a Prime95 stress test?

In an effort to diagnose the cause of random resets and freezes I have been running a series of stress tests on my two year old computer. Thus far the machine has passed nine hours of the Prime95 ...
0 votes
1 answer
284 views

What's special about Prime95's torture testing?

Overclockers often use Prime95's Torture Test to stress-test their CPUs, but what I don't understand is that why overclockers don't prefer other programs that stress CPU to 100%, for example, anyone ...
2 votes
0 answers
2k views

What is Prime95 benchmarking?

I've recently had to benchmark the CPU performance of a variety of operating systems on identical machines. I've been using the 'benchmark' functionality of Prime95 to obtain a consistent test. I've ...
4 votes
4 answers
5k views

BSODs and Prime95 failures

My computer is notoriously unstable. It blue screens all the time. I'm running Windows 7. Here's what's in the box: Intel Core i7 920 (Stock cooler, not overclocked) Gigabyte EX58-UD3R motherboard ...
2 votes
2 answers
1k views

Is Prime95 a dual-core tool?

Does Prime95 use multiple cores? (Is there a difference in this regard between running it from Windows, UBCD, or UBCD4Win?) If it doesn't, are there tools out there that will (preferably via a boot ...
0 votes
2 answers
2k views

Boot disc Dual-Core CPU stress tool?

Looking for a tool that can test a dual-core cpu via a boot disc, thus bypassing Windows (and ensuring that only the hardware is being tested). UBCD4Win's included Prime95 is an older version and it ...
3 votes
1 answer
323 views

Memtest #5 failing, prime95 failing and BSODs

I've been having a lot of trouble with freezing and bsods with my computer lately, so I took the chance to do a full upgrade. My new system only shares the VGA with the old one, nothing more. Current ...
0 votes
1 answer
327 views

Computer shuts off after heatsink upgrade

I just recently replaced the stock heatsink that came with the AMD FX-8150 with a Cooler Master Hyper 212 Evo and have been having a lot of issues with my computer ever since. I first noticed the ...