3 ms·
5950X with the top of the line noctua cooler jumps from 35C to 80C very quickly when a single core is loaded at 100% (this is the worst case, because it leads t
by megous 5y ago
5950X with the top of the line noctua cooler jumps from 35C to 80C very quickly when a single core is loaded at 100% (this is the worst case, because it leads to max voltage being applied to the CPU cores (because of boost to almost 5GHz), compared to loading all 16 cores at 100%, which will result in just 60˚C temperature sustained over long periods of full load). So interestingly, compiling the Linux kernel with 32 threads is less thermally straining on the CPU than browsing the web and a single page loading 10 different animated ads.
- formerly_proven 5y agoThis mirrors my experience with Zen 2 and 3 as well. Multi-core loads result in just a few W per core and decent temperatures, while few or single core loads push per-core power into the 12-16 W region and the temperature rise/fall is basically instant (brick-wall at 10 Hz update rate, though it's unclear what filtering is applied and how the CPU derives a single temperature from its probably numerous sensors), which suggests that they're not limited by the cooler, but rather by the thermal impedance from the active area to the cooler. The core itself is really tiny (iirc around 4 mm²)...