hasamch6 :
So can I use thermal take 450 psu??
Depends. Some of thermaltake's PSUs are of very low quality. I would suggest getting an EVGA 400W (W1 series), or EVGA 400B/BQ/B2/B3. If you already have it post the model number to this chat, and we can check if it is good. Often it's not about the wattage, its about the
quality.