Wrong Installation of PSU

[altunkayaeyyup]

Good evening everyone. Today I found a guy on the internet to help me build my PC and he came over. I had every parts he just build and I watched him until the end. It took 4 hours for him to finish the job.

Anyway, to my question: after he finished the job and left, I've just realized that he put the PSU in the wrong way that the fan of the PSU is looking upwards when it should look downwards. Can I change this easily or should I call him again to come over and help me?
I know I can do it though. 🙁 I am so upset now and I haven't started my PC because of this...

The case is Phanteks P400S and the PSU is EVGA 750w G3.

Many thanks,

Regards

 

[bailojustin]

It makes no difference how the fan is set in the case, whether it be up, or down. The PSU still serves the correct purpose and nothing can be damaged from this, Now instead of pulling air from outside the case, it pulls air from inside to push out.

Also in terms of electricity its safer as now when you connect the power cable, the ground is the highest prong.(electrical code outlets are installed upside down now) this has no effect on it, just a nice addition.

 

[R_1]

the power supply is secured by 4 screws.
turn off the system.
Remove the side panel of the computer, 2 screws or a retention clamp whichever is applicable.
remove screws 1-4 holding in the PSU.
the PSU can now be pushed into the computer chassis, once the PSU is free of the chassis invert the unit and replace.
slide the PSU to the rear of the chassis and secure the 4 retaining screws.
secure side panel.
power on the system.
enjoy.

the case in question is vented for top or bottom exhaust

 

[t53186]

The only difference in changing the orientation of the power supply is where it draws air in from. if the fan sucks in case air it will be warm. It the power supply is oriented to bring in outside air the air will be cooler..

If you want to change it, there are four screws that screw into the supply from outside of the case, remove them and flip it over, then replace the screws

 

[altunkayaeyyup]

Guys thanks a lot for your quick replies.

@bailojustin I haven't come across anyone (has p400s) that the fan of their psu points upward, so I want to have it pointing downward like anyone. Thanks for the info tho appreciated.

@R_1 I will do that now thanks for the explanation.

 

[13thmonkey]

personally I would point it upwards, this would draw air in from the case and then out the back.

The reason for this is that if the intake is filtered below you are risking a component that desperately needs cooling and has no sensors pulling air through a blocked filter. If it pulls from the case you won't ever have this problem. If it is not filtered when pulling from below you are pulling dusty air through the tiny gap between the feet and the floor. Again no sensors and you can't tell how the PSU is coping. If it's on carpet, you'd may as well set fire to the PSU.

As to what other P400 users do, I'd pay them no attention.

 

[TJ Hooker]

Also in terms of electricity its safer as now when you connect the power cable, the ground is the highest prong.(electrical code outlets are installed upside down now) this has no effect on it, just a nice addition.

How does this make it safer? The only reason the PSU prongs would be exposed would be if it's not plugged in, meaning non of the prongs are live anyway...

 

[altunkayaeyyup]

personally I would point it upwards, this would draw air in from the case and then out the back.

The reason for this is that if the intake is filtered below you are risking a component that desperately needs cooling and has no sensors pulling air through a blocked filter. If it pulls from the case you won't ever have this problem. If it is not filtered when pulling from below you are pulling dusty air through the tiny gap between the feet and the floor. Again no sensors and you can't tell how the PSU is coping. If it's on carpet, you'd may as well set fire to the PSU.

As to what other P400 users do, I'd pay them no attention.

Couldn't open the right plate anyway *sigh*

I will let it stay like this then. Let's see, if I get no problem then I will let it stay this way.

Maybe more info would help you to know if it's better upward or downward.

I have two 140mm on the top and one 120mm on the back which both are pushing air inside the case. Then I have H100i v2 Corsair's liquid cooler (240mm) on the front, which I think lets the air outwards.

 

[13thmonkey]

Well that's all backwards, in at the front, out at the back/top. That's been proven to be the best way. It also ensures that the GPU is fed plenty of fresh air.

Doesn't alter my opinion on PSU orientation.

If you have the rad on the intake side you'll get much higher case and GPU temps, but lower CPU temps. If you have it on the exhaust side you'll have slightly higher CPU temps (but still very good), and lower everything else. The vast majority go for the latter option.

 

[altunkayaeyyup]

Well that's all backwards, in at the front, out at the back/top. That's been proven to be the best way. It also ensures that the GPU is fed plenty of fresh air.

Doesn't alter my opinion on PSU orientation.

If you have the rad on the intake side you'll get much higher case and GPU temps, but lower CPU temps. If you have it on the exhaust side you'll have slightly higher CPU temps (but still very good), and lower everything else. The vast majority go for the latter option.

Wow. Unfortunately I can not do that now because I have 240mm Liquid cooler at the front which takes the air out.
The rest 3 is pushing air inside. In this case will I get a higher temp. of GPU? Did I understand correctly? If this is the case then it's bad because I have bought liquid to cool CPU so I want CPU temp. higher..
Well, I screwed up again didn't I?

 

[13thmonkey]

I'd be asking your friend why he thinks that a back to front (as opposed to a front to back) flow is best for you. To me it just sounds wrong, I've been trying to find the article I read years ago, but can't at the moment.

 

[altunkayaeyyup]

Well I have asked him to do it this way and he said no problem. I guess I will have to use it this way and see if I have any issues after 4-5 months. If not then I'll be happy.
Again thank you for helping mate. Wish you have a great weekend.

Cheers!