Not sure which direction to face psu fan

[AssumingUnicorn]

I recently got the Corsair 750D. I've been using my TX650 for about 2.5 years now and I've always had the fan facing up. The case I was using before was the Antec Illusion having the psu fan facing up on that case as well. But I heard with the 750D's bottom vent and dust filter, I should have the psu fan facing down now? If I did, the letters for the psu would be flipped upside down as well which makes it seem wrong to do.

 

[Bluemoon_9]

Yes, The PSU is bottom mounted in this case. Fan downward

Here you will see a picture of a mounted PSU in this case.

http://www.techpowerup.com/reviews/Corsair/Obsidian_750D/5.html