Revert "try oc again"

This reverts commit 3e9dedb3ca4417abf16a682afa066763af2528ac.
Revert "Revert "add cpu overclock up to 2.3ghz""

This reverts commit b72416ae248b41d1e2d9410ab035dea3cd524fe0.
Revert "add cpu overclock up to 2.3ghz"

This reverts commit 92d70e220f5271fea7e9def7a208289737623bf3.