Reddit reviews Phobya HeGrease Extreme High-Permormance Thermal Compound (3.5g)

A few tips:

1. You do not have to use Clevo Control Center. Obsidian PC has developed a utility for that, Control Station, which you can fetch here. You can reach the developer on NBR for more info on the tools, and the threads there concerning these facilities.
   
2. For Linux, you could use Tuxedo's fan control and keyboard backlight utilities. If you need help setting that up, I'd be glad to help. See this and these gists on how I set up these tools on my former Eurocom Q6, based on the Clevo P955ER chassis.
   
3. For thermals, a repaste will do. Personal recommendation: Use Phobya Nanogrease Extreme. It's composition (and viscosity) renders it the same advantages of the likes of Gelid GC Extreme, and is easy to apply. The longevity is also quite outstanding. One to avoid: The HeGrease variant. Its' garbage.
   
4. On BIOS and EC firmware: If you're considering a Clevo system in your purchase, get it from one of the Premamod Partners, such as XoticPC. The advantages of the Prema BIOS mods are self explanatory, including access to advanced BIOS settings and in-BIOS voltage controls (such as under-volting).

I've used about a dozen different compounds over the years I've been building and they are all virtually equal in terms of performance. Equal enough that simply buying one from a reputable brand will yield great results.

The heatsink/liquid cooling choice is what you need to research as it will be the biggest factor.

Personally though, I use the Phobya HEgrease

http://www.amazon.com/Phobya-HeGrease-Extreme-High-Permormance-Compound/dp/B0067M0ZAU