12V rail outputs are rated 8A and 14A. Expect 1A to 2A less due to power de-rating with temperature.
I also expect low build quality, electrical performance, and lack of protections.
In theory, yes. But it needs to be a quality unit. There are no quality 300w and these pre-builds usually have pretty crappy PSU units. A better PSU is recommended, preferably 400w or above.... https://linustechtips.com/main/topic/631048-psu-tier-list-updated/
Yes, the same logic applies. That 760 needs even more power than 1050ti.
The point here is to upgrade to a unit which you can safely run your brand new card with.
12V rail outputs are rated 8A and 14A. Expect 1A to 2A less due to power de-rating with temperature.
I also expect low build quality, electrical performance, and lack of protections.