I executed Prime95 for 5 hours on a non-OC Haswell i7 4790K.
I executed Prime95 for 5 hours on a non-OC Haswell i7 4790K.
Hi Guys,
I was running Prime95 in Blend mode for about five hours to monitor CPU temperatures during load until I learned that testing tools might harm my system. If I hadn’t overclocked my i7 4790k yet, could my CPU have suffered damage?
Thanks.
EDIT: I didn’t use the older version (26.6) suggested for older CPU models like mine.
Close enough. Throttling is likely to begin beyond 80. You should probably be fine, but try again with the right utility and version and remove HWmonitor.
Start by uninstalling Open Hardware Monitor. Avoid using either Open Hardware Monitor or HWmonitor—they often give poor results on certain chipsets or sensors. These programs are generally unreliable. Instead, use HWinfo or CoreTemp.
CoreTemp works well for CPU temperatures. HWinfo covers almost everything else: CPU temps, core loads, GPU sensors, storage sensors, motherboard details, and more. When using HWinfo, always choose the "Sensors only" setting.
Testing software doesn't harm systems. Using testing software after noticing overheating because of inadequate or insufficient cooling may cause damage.
Blend mode isn't a suitable test at all. I only recommend Prime95 version 26.6, specifically the Small FFT option, which provides a consistent load on the CPU and is the proper method for checking thermal compliance and baseline stability.
Your CPU appears to be in good condition; running Prime95 won't damage it unless you're using newer versions (above 26.6) and are aware of AVX instructions. Even then, the stock settings should be fine.
This.
Prime95 v26.6 is the most widely accepted method for performing baseline stability and thermal limit tests with the Small FFT option.
Download Prime95 version 26.6 for more details.
You can also explore comprehensive data on Intel CPU architectures and specs via this link, which comes from discussions with Computronix—the author of the Intel temperature guide. The information provided here is directly taken from their resources.
The Intel temperature guide
For AMD systems, especially Zen/Ryzen, this resource offers comparable details, though it's less exhaustive.
Ryzen overclocking guide
This appears to be the most frequently referenced overclocking manual, with its principles applicable across many generations and platforms.
The Ultimate Overclocking Guide
It effectively covers the topic and remains relevant whether you're working with Intel or AMD systems.
Darkbreeze: Testing software does not damage systems. Running testing software after you've already seen that it is overheating due to a lack of correct or sufficient cooling, THAT can damage a system. Blend mode is the wrong test anyhow. I only advise using Prime95 version 26.6, and ONLY version 26.6, and ONLY on the Small FFT option, which presents a STEADY STATE load to the CPU and is the correct method of testing for thermal compliance AND baseline stability testing. Your CPU is fine, or at least, is not damaged from running Prime95 although I would not run versions newer than 26.6 anymore unless you are an advanced user who KNOWS that you will be using applications that use AVX instructions and need to verify thermal compliance when doing so. At the stock configuration, even that should not be a problem anyhow though. THIS. Prime95 v26.6 is THE primarily accepted way to do the majority of baseline stability and thermal limit testing running the Small FFT option. Prime95 version 26.6: http://windows-downloads-center.blogspot...5-266.html Further, you can find extensive information regarding the Intel CPU architectures and specifications at the following link which is a somewhat definitive guide on that subject. The information below is taken directly from conversations with Computronix who is also the author of the Intel temperature guide, found here: For AMD systems, specifically Zen/Ryzen, this should offer similar albeit not nearly as detailed information on that architecture. http://www.overclockers.com/amd-ryzen-ov...ing-guide/ This is probably about the most referred to overclocking guide around, and it's principles can be applied to a variety of generations and platforms. http://www.overclock.net/t/91/ultimate-o...king-guide This pretty well sums things up and is equally relevant whether working with an Intel or an AMD system. Thank you for your detailed response. I was monitoring CPU Temp with HWMonitor and Max didn't exceed 80C. Would you say this was "overheating" the CPU?
Please let us know if using HWinfo/CoreTemp with version 26.6 Small FFT yields better results, as ongoing thermal problems might require a cooler mount adjustment or another solution.
The question asks whether a 64-bit system would use the 64-bit download for Prime95 version 26.6.