Good PSU for my rig?

Hello I have ~4 years old PSU its cooler master 450W, peak 550W and just wanted to ask if it can hold my rig. I have

  • Geforce GTX 660 Ti Asus TOP (OC)
  • FX-8320 @ 4.0Ghz
  • 4GBx2 RAM
  • 2 HDD 7200RPM
  • 2 Case fans RPM ~1000
  • MB GA-970A-DS3P
  • And of course keyboard mouse, webcam and so on. says you'll be using almost 400 watts. I'd be wary.

I have a PSU that has 408W on 12V with FX-8320 @4GHz and GTX 970 and it does just fine.
In general, you are pretty safe because you can expect both your CPU and GPU to peak at around 150W, and the rest certainly isn't going to use up 150 remaining watts.

It's OK. As long as you don't have unexplained BSOD, and no overheating it's all good (you can put your hand on the part of the case where PSU sits).

Thanks, its just recently my psu fan started to really kick in on load and it gets quite hot too.

Basicly 450W should be totaly fine, if the psu is a decent one offcourse.

For optimal lifetime and efficiency you should load the PSU with about 60-80 percent of its total capacity.

So I'd say 600 watt, might as well go for 750 if its not that much more expensive.

If this is not happening before, I recommend immediate replacement of PSU.