Biostar TF520-A2 Setup Manual page 29

Automatic Overclock System (A.O.S.)
For beginners in overclock field, BET had developed an easy, fast, and
powerful feature to increase the system performance, named A.O.S.
Based on many tests and experiments, A.O.S. provides 3 ideal overclock
configurations that are able to raise the system performance in a single
step.
V6 Tech Engine:
This setting will raise about 10%~15% of whole system performance.
V8 Tech Engine:
This setting will raise about 15%~25% of whole system performance.
TF520-A2/TF560-A2
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