AOpen MK77M-V User Manual page 2

WARNING
Thermal issue is highly essential for processors with a speed of 600MHz and above.
Hence, we recommend you to use the CPU fan qualified by AMD or motherboard
manufacturer. Meanwhile, please make sure CPU and fan are securely fastened well.
Otherwise, improper fan installation not gets system unstable but also could
damage both CPU and motherboard because insufficient thermal dissipation.
If you would like to know more about thermal topic please see AMD website for
detailed thermal requirement through the address:
http://www.amd.com