Quiet PSU Recommendations

[Sem]

Hello
i am looking to buy a new quiet psu in the 600-700w range

already tried the seasonic m12 600 last year but under load the thing was very noisy

currently looking at the
Corsair HX 620W
Zalman ZM600

or should i be looking at other models

thanks

 

[Sem]

Corsair 520W here and its very quiet. Every one here says the 620W is silent too.

is it still silent under load

the seasonic m12 is the same as the corsair except it has a 60mm fan and under load its sooo loud