After months extensively finding the reason why my overclocked R3 1200 have lower Cinebench score than other benchmark, i finally found the culprit.
Turning on 'Record Desktop' option on Radeon Relive drops 50-60 points on Cinebench multiscore.
'Record Desktop' off:
With 'Record Desktop' on:
PS: Ignore the CPU Frequency, it's a bug.
I know that this means little on fps or gaming, but 50 points off Cinebench score. That would mislead a lot of people.