Any good utilities to help monitor heat of components?

Just finished building my own PC and a playthrough of Farcry 3, and it eventually crashed after about 3 hours of straight play. I hear overheating can cause this. Is there a good utility to monitor heat of CPU and the graphics card without having to go into bios? Something that I could have on the DT that would give overall system info (CPU usage, temp, memory, etc)?

Hwmonitor, also install msiafterburner and enable the on screen display so you can Monitor your Gpu temp In game. You should also make a custom fan profile in afterburnerdarksusperia