system
A chat on subreddit /r/pcmasterrace
human
There was no cooler. The PC was meant to be a Workstation. I use it as a Home-Server with 6 HDD/SSD and 5 network interfaces. With every additional drive/network card the Chipset (Skylake) temp rises. Now I got 68C and it‘s running 24/7. 
If a passive heatsink (like the Raspi ones) can bring the temp down to 55-60C I would be satisfied. ;-)
gpt
Not sure I'd worry at 68c, really. But yeah a little heatsink and some thermal adhesive would do the job. Or just point a fan at it.