Will my psu work

[chaos]

I need some advice , will an i3-2120 and a evga geforce gtx 750 ti 2gb work well together with a 420 wattage psu?

 

[johnb35]

450 minimum especially if it's a crappy power supply you have already.

 

[Jiniix]

If it's a decent 420W it will run those parts with no issue. I ran a i5-3570 and HD 6950 2GB on a Corsair CX430 for years.

 

[beers]

Depends on the PSU.

If it's a POS from decades ago then it'd probably be worth getting a cheap 80 plus replacement. More reliable, more efficient. Depending on load you can make the efficiency difference back in like a year or two.

But from a wattage perspective that would be fine, I ran a couple 7570s for doge mining on a 6800K with a Corsair CX430 PSU for a while.