Friends, Thermaltake TR2 S Series is a new PSU and there is no details about who made it. It has white and black color box and label on PSU case, unlike fully back color sticker on old TR2 which is reviewed by Hardware Secret on 20110. Also TR2 has 80+ bronze certification whereas TR2 S has 80+ white. All other spec are different.
Anyway, my present Gigabyte PSU is made by FSP and I'm not keen on that company.
Thermaltake Smart Series sold in USA is same as Thermaltake TR2 S available here and I don't see any major complaints on Amazon.com and Newegg reviews.
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Good news. I have discussed this issue with my brother and he says go for good quality PSU rather those that we are not sure about quality. He is ready to help me get Seasonic M12II-620 from his CC and I have pay him next month. Seasonic has good resale value and incase it fails to work with my UPS then I can easily sell it through online forums (i.e here or erodov). Thermaltake PSU is hard to sell because of bad reputation.
As I have checked Seasonic M12II-620 already, it has mixed reviews regarding its UPS compatibility. It works for most having APC UPS but not for some. Now I need a strong hopes from you guys.