The temperatures you're experiencing with the Noctua NH-D15S are what you're seeing right now.
The temperatures you're experiencing with the Noctua NH-D15S are what you're seeing right now.
I own an Intel Core i7 7700k overclocked to 4.7Ghz, currently running at about 35°C minimum and 42°C maximum. Under full load, my CPU reaches around 60°C and peaks at 68°C. Are others experiencing similar temperatures with this cooler? I've been concerned the temps are too high since installing it.
Your CPU is good for full time operation all the way up to 80°C continuously. Your temps are in line with, and actually, very good for, the overclock you have. I am skeptical that you actually have a completely stable overclock though with that low of temperatures. What is your core voltage at?
What do you have CPU load line calibration set to?
Are you using an automatic overclocking feature or are you overclocking manually through the bios?
Have you run Prime95 version 26.6 on Blend mode for 8 hrs and Realbench for 8 hours with no errors in either program?
If not, I would have serious concerns regarding micro errors and stability. Just because you aren't getting blue screens doesn't mean the overclock is stable. If you are only in...
Your CPU performs well during continuous full-time operation up to 80°C. Your temperatures match and exceed the recommended overclock limits quite a bit. I doubt you have a fully stable overclock given those low temperatures. What is your core voltage at?
What is the calibration setting for your CPU load line?
Are you relying on an automatic overclocking tool or adjusting manually via BIOS?
Have you executed Prime95 version 26.6 in blend mode for 8 hours and Realbench for 8 hours without encountering any issues in either program?
If not, I would have major doubts about micro-stability and consistency. Just because you're avoiding blue screens doesn't guarantee a stable overclock. If your testing is limited to thermal phases, I recommend running Prime95 version 26.6 for roughly 15 minutes using the Small FFT option. As long as your CPU remains below 80°C, you meet thermal requirements. Otherwise, it doesn’t qualify.
Prime95 v26.6 is generally considered the standard method for most thermal compliance tests, especially when using the Small FFT setting.
Download Prime95 version 26.6 for more details on Intel CPU designs and specs. The data here comes directly from discussions with Computronix, the creator of the Intel temperature guide, which can also be found at:
The Intel temperature guide
For AMD systems (Zen/Ryzen), this resource provides comparable but less comprehensive details.
Ryzen overclocking instructions
AMD FX and A series overclocking manual
This appears to be the most widely used overclocking reference, with its principles applicable across many generations and platforms.
The Ultimate Overclocking Guide
It effectively captures the key points and remains useful whether you're working with Intel or AMD hardware.