Asus Z7S WS - Manual (Page 20)

1-4 Chapter 1: Product introduction
Temperature, fan, and voltage monitoring
The CPU temperature is monitored by the ASIC WINBOND C.S W83793G chip
to prevent overheating and damage. The system fan rotations per minute (RPM)
is monitored for timely failure detection. The chip monitors the voltage levels to
ensure stable supply of current for critical components. See page 4-28 for details.
1.3.2 Innovative ASUS features
CrashFree BIOS 3
This feature allows you to restore the original BIOS data from the support CD in
case when the BIOS codes and data are corrupted. This protection eliminates the
need to buy a replacement ROM chip. See page 4-8 for details.
ASUS MemCool FB-DIMM Fan Kit (optional)
With this optional fan kit, the platform gets optimal performance and the best
possible FB-DIMM thermal environment. See page 2-18 for details.