Nothing is bad. Corsair CX600 is 80 plus bronze certified psu.It's still running good, no burning plastic like smell, no overheat even i use 24/7. It gives me 552W on +12V rail which is nuff for me. Components used to build this psu r good but not like seasonic & others . Seasonic PSU r costly & don't have good support in my country. I can't find the Antec VP 550 or 650 p & almost all of the psu r not available in my state. In almost every forums they will tell to buy good one which are costly & overrated. I choose the best one for me