4790k Safe Temps?
4790k Safe Temps?
After setting up a custom water cooling loop over a year ago, I’m finally starting to optimize my 4790k. I’ve experimented with OC settings on my old Phenom XII 965 BE before, but never really worked with an Intel chip. I used MOBO’s easy tweaker to push it to 4.5 (101.99 x 45.) @ 1.7W. Running Prime95 for about 10 minutes, it reached around 85°C during idle at roughly 30°C. Are these temperatures acceptable, or should I adjust my settings and voltage myself?
ericlplante, Check the Intel Temperature Guide at the top of the CPU's Forum: Intel Temperature Guide - Avoid using Prime95 versions older than 26.6 on 2nd through 7th Generation i3, i5 or i7 CPUs, as they all support AVX instruction sets. Newer Prime95 releases like 28.9 execute AVX code on the CPU's Floating Point Unit (FPU), leading to temperatures up to 20°C higher than expected. The FPU test in AIDA64 confirms these findings. Download Prime95 version 26.6 - http://windows-downloads-center.blogspot...5-266.html Only perform small FFT operations for 10...
There is a sticky at the top of the CPU's Forum you should check out: Intel Temperature Guide - Avoid using Prime95 versions older than 26.6 on i3, i5 or i7 CPUs with 2nd through 7th generation, as they all support AVX instruction sets. Newer Prime95 releases like version 28.9 execute AVX code on the CPU's Floating Point Unit (FPU), leading to temperatures that are up to 20°C higher than expected. The FPU test in AIDA64 confirms this behavior. Download Prime95 version 26.6 - http://windows-downloads-center.blogspot...5-266.html Only perform small FFTs for 10 minutes. Utilize Core Temp to monitor your temps - http://www.alcpu.com/CoreTemp Your Core temperatures will be about 20°C lower with v26.6 compared to v28.9. The recommended core temperature ranges are: 80°C Hot (100% Load) 75°C Warm 70°C Warm (Heavy Load) 60°C Normal 50°C Normal (Medium Load) 40°C Normal 30°C Cool 25°C Cool Core temperatures staying below 80°C are safe.
CompuTronix: ericlplante, Refer to the Sticky at the top of the CPU's Forum for guidance: Intel Temperature Guide - Avoid using Prime95 versions older than 26.6 on 2nd through 7th Generation i3, i5 or i7 CPUs, as these support AVX instruction sets. Newer Prime95 releases, such as 28.9, execute AVX code on the CPU's Floating Point Unit (FPU), leading to temperatures up to 20°C higher than expected. The FPU test in AIDA64 confirms this behavior. Download Prime95 version 26.6: http://windows-downloads-center.blogspot...5-266.html Limit FFT operations to 10 minutes only. Utilize Core Temp to monitor temperatures - http://www.alcpu.com/CoreTemp Core temperatures will be about 20°C lower with v26.6 compared to v28.9. Recommended core temperature ranges: 80C Hot (100% Load) 75C Warm 70C Warm (Heavy Load) 60C Normal 50C Normal (Medium Load) 40C Normal 30C Cool 25C Cool Core temperatures up to 80C remain safe. CT I noticed my readings were a bit high. Would you suggest an alternative stress testing tool that offers better accuracy or a link to a reliable Prime95 version? *edit - carefully reviewed the entire post, thank you.*