1.1080 p.It depends on a few things:
Knowing the rest of your system specs would definitely help: CPU, RAM, and Power Supply (brand and EXACT model)
- What's your monitor's resolution?
- What's your monitor's refresh rate?
- Does your monitor have FreeSync, GSync, or neither?
- What specific games are you playing, or planning to play in the near future?
- What specific frame rate and quality settings are you targeting?
People from my country doesn't consider it a bad psu. It is strange that you are saying it.Is your RX570 a 4GB or 8GB model?
How is it falling short for you currently (if at all)?
I would definitely replace that PSU first, even if you don't do anything else. Chieftec doesn't make good PSUs (they're on the Wall Of Shame, see the first link in my signature, which also gives recommendations), and that they only offered a 2-year warranty shows how little confidence they have in that power supply.