I would love to try out the SM or SL (although with dodgy CFM ratings) but unfortunately there's not a single retailer here in Malaysia that brings the yates.

I still havent open my PSU yet to check for the fan, but from a review done by SPCR here, it says that the fan is actually an ADDA 12cm fan with 0.44amp, no specs on the CFM though. the fan has those clicking sound which annoys me the most, especially because my PC is located rite beside my bed.

Anyway, thanks for your recommendation. Shall study the graphs again to choose a suitable candidate for the fan swap. Very much appreciate your help.