This psu is enough for this card

[st0rM123]

will my psu (cooler master extreme ii 525w) support gtx 550ti? my pc specs are
core i3 530 2.93 6gb ram dh55tc

 

[COLGeek]

Yes

 

[st0rM123]

Yes

It will work perfect ? without any difficulty of amps etc

 

[COLGeek]

Yes. It will meet your needs. Cooler Master tends to produce inferior power supplies. I would suggest you would be better served with a quality Seasonic or Corsair PSU, but the one you have now will meet your current stated needs. I would recommend against overclocking your system with this PSU, however.