Opened Chrome, opened gmail and youtube, nonstop 25% CPU usage, fans ramped to 4000+RPM, closed chrome, 3% with Firefox with some simple tabs. The culprit seems to be chrome's "software_reporter_tool.exe". It has chewed up 3 minutes of CPU and counting. It seems to have some well-multithreaded elements, it's added 12 seconds of CPU time in 1 second occasionally.