Only 1 Fan? (Intake)

[imperiusx3]

Hi everyone.
I built a PC for my girlfriend the other day and I realised the case that I used only has one fan (intake at the front). My question is will this be enough? PC will only be used for stuff like Microsoft Office, Internet browsing, Netflix, Youtube etc. Very basic. I don't believe PC will ever be under heavy load. Will one fan be enough for this or should I buy an exhaust for the back?
Thanks in advance.

 

[Dark Lord of Tech]

If possible it should 1 rear exhaust.

 

[Gam3r01]

Depends on the components in the system. If its low enough in terms of heat output a single fan could be okay.
I personally would recommend having an exhaust too even if the single fan is fine. The more fans you have the lower your fan speeds can be.

 

[jimboraver77]

as above for the price of an extra fan you may as well get one, just to be safe

 

[imperiusx3]

Thanks for the reply. The motherboard only has 3 pin fan connections would I be able to change the fan speed without any software? I don't want exhaust fan to be blowing full speed if I get one. PC has some old Asus Motherboard I'm not sure about the model sorry

 

[jimboraver77]

im pretty sure, 99% sure that a 3 pin fan can only be controlled by voltage so the motherboard could control it but not software? For software it needs to be 4pin PWM.