PSU Quick mounting question

Thanks to your advice I just bought the corsair CX 400 PSU.
It's my first no noname PSU and it come as you know with a top fan.
My case as a top mounting point so the question is should I put the fan up the top with just 1 or 2 cm for it to blow hot air, or have the PSU pointing down so the fan blow on the CPU? Or is there a third option like drilling hole in the top of my case.
Thank for your help

 

I'd say pointing toward the mobo, the fan won't be doing much with that little space.

 

Ok thank for your advice I will mount it tomorrow.

 

Seems a bit odd?

Corsair isn't a non-name PSU ... probably the best name PSU in fact.

Can you tell us what case you have?

Normally, the PSU will draw air from inside the case and will push it out the back.

 

He said "first no noname", not first noname.

 

The exhaust is usually on the side where the power cord plugs into, the fan on the top (or bottom depending on which orientation you have it) is usually an intake. You can confirm this by holding a piece of tissue near the expected exhaust and see if it pushes it away or tries to pull it in (when it's running of course)

 

ah yes, my bad.

There's still some sort of problem with the setup ... looking forward to hearing case details [EDIT: probably no longer needed given below.]

As per the point by 'General_Confusion', I think the confusion is that the big fan is the intake (into the PSU), rather than the out-take. The air escapes through the grille on the side that's opposite to the cables. The big fan should be oriented near the motherboard and CPU to draw air from them and out of the case.

 

I mounted it the fan pointing down with no problem.
It's really silent. I won't ever buy a no-name PSU for sure.
My case is the Antec sonata II http://www.antec.com/Believe_it/product.php?Type=Mg==&id=NjYy that I bought second hand.

 

I have run the same case for nearly four year, PSU fan pointing down definately.