PSU intaking hot air

[24PinConnector]

Hello, could you please answer me this question?
I bought a new PSU to replace the old one.
I have no other choice but to mount it so the fan is facing into the case, because i don't have a vent on top of the case. Is the PSU going to be damaged because of the hot air that my CPU is producing?
It is a low budget PSU that's worth 30$.

 

[Dark Lord of Tech]

Not an ideal situation for a cheap PSU.

 

[geofelt]

What is the make/model of your psu?
What is the make/model of your graphics card.
If your psu is sufficiently strong to run the graphics card easily, then the cooling fan will hardly need to work. Normally intake from inside is not an issue.

More importantly, a $30 psu is a cheap unit that can be dangerous.
If it should fail under load, it will not have the protective circuitry to protect your parts from damage.
A cheap psu can become very expensive; replace it.