PSU upside down?

[-X-hellfire]

the PSU a Corsair HX-520W is placed in the bottom of the case, a Cooler Master Stacker T01, and is somewhat warm but not hot when running upside down and the PSU fan runs at a very low rpms but I´m wondering if it is any big difference in temps if I flip it and mod the case?


http://img246.imageshack.us/img246/2993/dsc0153739layer13brotexam6.jpg (http://img246.imageshack.us/img246/2643/dsc0153739layer13brotexku7.jpg)

click to ZOOM ( + ) (http://img246.imageshack.us/img246/2643/dsc0153739layer13brotexku7.jpg)


I wanted to do it but havent found any good airfilter for this kind of mod, the CM Cosmos has this solved by airfilter specially designed for sucking air from bottom of the case, without too much and not too little airresistance making the PSU into a vaccuumcleaner.

[g1raffe]

How it is now is normal for cases like this, and is perfectly fine.

It is also normal for the Corsair PSU's o run a little warm afaik, this is because of how the fan speed works and to keep it as quiet as possible..

There will be little benefit of flipping the PSU and cutting holes in the bottom of the case, and that will give you one less exhaust fan for the system.

[-X-hellfire]

How it is now is normal for cases like this, and is perfectly fine.

It is also normal for the Corsair PSU's o run a little warm afaik, this is because of how the fan speed works and to keep it as quiet as possible..

There will be little benefit of flipping the PSU and cutting holes in the bottom of the case, and that will give you one less exhaust fan for the system.


I thought the PSU fan was running a bit too slow as the heat escapes up between the fanblades into the case over the graphicscard etc

There are some digital tempsensors fot the two T-Balancer XL which can be seen on the picture, on the PSU and on the GPU and on in front of the GPU fan to try to measure the air temp and while it is upside down it does not get cool air from the bottom of the floor.

If the PSU were with the fan facing down maybe it doesn´t matter as it will run very slow and the airfilter will trap the heat anyway and the PSU will heat up its casing and emmit heat into the computercase.


Yes that is true that the case will miss one exhaust fan if the psu:s fan is facing down but the 2 x Panaflo 80mm at the top do exhaust much of the excess airflow from the 2 x Cooltek 120mm in the front

(my fan config is my sig but its a bit cryptic to save space)

[g1raffe]

I thought the PSU fan was running a bit too slow as the heat escapes up between the fanblades into the case over the graphicscard etc
Even with the fan running slow the air if sucks in through the PSU should be a lot more pressure than that of warm air rising..

If the PSU were with the fan facing down maybe it doesn´t matter as it will run very slow and the airfilter will trap the heat anyway and the PSU will heat up its casing and emmit heat into the computercase.
That shouldn't happen, as long as the PSU fan can intake air, whether it is upside down or not, it should be able to cool itself..

[-X-hellfire]

Yeah the PSU:s tempsensor will notice a tempchange, if an airfilter obstructs the fan, and increase the fanspeed as needed. I´m trying to create an effient setup that will be as silent as possible but yet potent when pushed to the limit when I start overclocking the Q6600 quad which runs at default 2.4 GHz for now.

(I not sure how the fancontrol in the PSU works exactly, I read someware that it measuared the effect that is outputs but in that case warm air can get trapped and heat up a case if the load is quite low, and by low I mean the cpu is Idle )

The CM Stacker has mesh all over the place and lets air run though the case door too were I have had to remover the 80mm fanholder and mod it so now that fan is blowing in air below and the gpufan area (haven´t noticed any benifit from though as the gpu seams to be at the same temps anyway).


In my old setup, with the same case, with an other PSU I had a digital tempsensor inside the PSU that controlled the fan with T-Balancer, this can´t be done now as it would void the 5 year warranty of the Corsair HX-520W

[g1raffe]

Yeah the PSU:s tempsensor will notice a tempchange, if an airfilter obstructs the fan, and increase the fanspeed as needed. I´m trying to create an effient setup that will be as silent as possible but yet potent when pushed to the limit when I start overclocking the Q6600 quad which runs at default 2.4 GHz for now.
In my old setup, with the same case, with an other PSU I had a digital tempsensor inside the PSU that controlled the fan with T-Balancer, this can´t be done now as it would void the 5 year warranty of the Corsair HX-520W

The Corsair already has a fan controller on its fan, if you start overclocking and pushing the PSU further, the fan speed will increase as necessery. The Corsair HX can usually run at minimum fan speed up to 3-400W load though.

[-X-hellfire]

The Corsair already has a fan controller on its fan, if you start overclocking and pushing the PSU further, the fan speed will increase as necessery. The Corsair HX can usually run at minimum fan speed up to 3-400W load though.

Ok, that was that it was doing as it seams to be almost as warm all the time, even under heavy load as playing UT2004 for hours and hours or running 4 instances of prime.


As I might buy a Soundcard later on, Creative X-Fi something, it will be at the lowest PCI slot nearest the PSU and will obstruct it very much as I need the 4 USB 2.0 slots as seen i the picture above, but I will buy a bracket with 4 ports instead as the 2+2 seen and move the external sata port one slot up or move the X-fi one slot up?

Yeah that look better as it does not obstruct the PSU as much.

[-X-hellfire]

Here is a picture of the airintake to the graphicscard.

http://img265.imageshack.us/img265/4540/dsc01306gpuresize2800xg5.jpg
(http://img265.imageshack.us/img265/842/dsc01306gpuresize31920my1.jpg)

click to ZOOM ( + ) (http://img265.imageshack.us/img265/842/dsc01306gpuresize31920my1.jpg)


It´s an older photo as some things have changed, cable management as seen here the PSUs PCIe power cable is too short and obstructs the airflow somewhat for the case out fan which is more tightly arranged in the first picture in post #1 but it´s hard to see in that picture, that is also why I wanted to try out to have the PSU with the fan down to see if the PCIe power cable could be routed better.

[-X-hellfire]

Is it possible to order some longer cables for this modular Corsair HX-520W PSU?


The cable that´s in the way in the previous picture is not modular though.

[g1raffe]

You can't order longer cables, but you can get extension cables for various plugs, at some stores..