Thanks for the responses. One thing I thought was curious about this laptop was that after I let it idle, I ran a cpu-z benchmark which takes maybe 15 seconds to run. During most of that time, the CPU temp was going way up yet the fan hadn’t responded, then when the processor hit about 97C, *then* the fan kicked in. It reminds me of Lenovo’s “ultra quiet mode”, so I’m going to have a trawl through the BIOS for something similar with this Dell laptop.