psu(power supply unit)

[taha488jsr]

I have asrock h91 m plus mobo and planning to go for gtx 1050ti windforce oc 4gb which SMPS should I use?

 

[rocktalkrock]

You don't need much power for that setup. The EVGA 500 B1 is often recommended for a low power build.

 

[PuperHacker]

That depends on the rest of the system. If your CPU is about 100w TDP, a https://pcpartpicker.com/product/dDH48d/corsair-txm-gold-550w-80-gold-certified-semi-modular-atx-power-supply-cp-9020133-na would be able to do a good job, leaving you space to upgrade.
If you need a cheaper solution, this: https://pcpartpicker.com/product/TgW9TW/seasonic-power-supply-m12ii520bronze would be quite a potent PSU.

 

[Rexper]

The S12ii and EVGA B1 are both mediocre, usually overpriced PSUs.

You would be fine on a good 400w PSU. Look for a Be Quiet Pure Power 10 400w+ or Corsair CX/CXM grey.