On my PC system, an Intel based 8 core CPU running at around 4.5 GHz on turbo, with water cooler...
The CPU temp shown on Core-temp reaches 100 C. That is the max temp, this CPU is designed for. The CPU usage in proces explorer, is high and fluctuates... It can reach 30% which is very high.
Meanwhile using Google Chrome, the usage of both CPU and RAM is much lower... and the CPU temp is decreasing...