Fan not performing as expected :(

[Matthew12106]

Now I have recently made a post about how I am going to buy a new Aerocool DeadSilence 14cm blue led fan. So I can cool my gpu better I'll give you the gist. My gpu was running hotter then I'd like so I thought it was this case fan config here is that bit 

 

 

 So My case is a zalman z11 plus. When I bought the case I wasn't really aware of the whole positive and negative pressure thing. Here is a picture of the case and it's fans

You can't actually see it in these pictures but there are 2x exhaust fans, one in each side panel as part of Zalman's unique HDD cooling solution demonstrated in the following picture.

 

So I thought since there was one intake which most of was probably being taken up by the 2 exhuasts in the side panel never mind the other 2 exhausts at the back of the case. That installing a fan in the bottom (which is the small picture to the left of the internal case picture) as a filtered intake would help allot since

A It was literally pointing the gpu

B it satisfies the whole air should travel in the bottom right to top left and

C I was going to plug it in via molex hence max rpm

 

Sadly it kind of didn't I used heaven as a benchmark without the fan it hit  max of 76 with about 70% fan speed

with the fan it hit about a max of 74 with a fan speed of about 65%

Here are the comparison pics

 

Without the fan

 

With the fan

 

Without the fan

 

With the fan

 

 

I mean I was expecting more at least about 5 degrees considering it's a 140mm fan running at max rpm facing the gpu with an airflow rating of like 64CFM

 

I'll attach some pics to see if I did something wrong. When I was taking the pics I felt over the fan and I really didn't feel that much airflow I think I mounted it as a intake right? well here are some pics

(Sorry I know it's kinda hard to see with the blue led)

 

 

 

 

If you are thinking about clearance there is clearance as you can see

 

I mean under there can fit about 1.25 tic tac boxes although that reduced a little because of the dust filter. I know this was a pretty long post but still

 

Thanks

 

 

 

[MourningSouls]

Try flipping your side fans to intake.

 

Also, two other things. Powered LED fans make for very bad pictures, especially in dark rooms. And secondly, you know your using a PC right? You don't have to take pictures of your screen with your camera.

[Enderman]

When was the last time you dusted and replaced thermal paste on your GPU?

btw what gpu is it?

[Matthew12106]

Try flipping your side fans to intake.

 

Also, two other things. Powered LED fans make for very bad pictures, especially in dark rooms. And secondly, you know your using a PC right? You don't have to take pictures of your screen with your camera.

You can't flip the side fans, and yes I know I can just take a screenshot 

[Matthew12106]

When was the last time you dusted and replaced thermal paste on your GPU?

btw what gpu is it?

Not since it was bought (about 10 months ago) I mean I built and pc and all but that seems like a whole new level of "I'm going to break this"

Also it's an msi r7950 Boost OC (960/1250)

[Enderman]

Not since it was bought (about 10 months ago) I mean I built and pc and all but that seems like a whole new level of "I'm going to break this"

Also it's an msi r7950 Boost OC (960/1250)

Hm. I guess the GPU is already getting all the airflow it needs then. It must the ambient temperature that keeps it from getting any lower. So now the only thing that can bring GPU temps down lower is increasing the GPU fan speed. Your case has all the airflow it can get already.

 

But I wouldn't really worry about your temps, they seems reasonable for that GPU.

[Matthew12106]

Hm. I guess the GPU is already getting all the airflow it needs then. It must the ambient temperature that keeps it from getting any lower. So now the only thing that can bring GPU temps down lower is increasing the GPU fan speed. Your case has all the airflow it can get already.

 

But I wouldn't really worry about your temps, they seems reasonable for that GPU.

I know but it's the stupid noise and I don't want to adjust the fan curve because I don't want it running any hotter than it has to

[Enderman]

I know but it's the stupid noise and I don't want to adjust the fan curve because I don't want it running any hotter than it has to

75C is fine. You can't really do anything else since you already added all the case fans you could, and you don't want to increase the GPU fan speed.

If you are really uncomfortable with those temps you always have the option of getting a G10 and AiO to liquid cool your GPU, but that will cost at least $60

Other than that I wouldn't worry to much about it.

[Matthew12106]

75C is fine. You can't really do anything else since you already added all the case fans you could, and you don't want to increase the GPU fan speed.

If you are really uncomfortable with those temps you always have the option of getting a G10 and AiO to liquid cool your GPU, but that will cost at least $60

Other than that I wouldn't worry to much about it.

Will a g10 fit my gpu

[Enderman]

Will a g10 fit my gpu

EVGA ACX cooler? Yes it should.

[-rascal-]

EVGA ACX cooler? Yes it should.

EVGA ACX Cooler??!? OP is running a MSi TwinFrozr Radeon HD 7950...

Depending on which particular model your HD 7950 is, it may or may not work with the NZXT G10. The G10 was designed according the AMD REFERENCE CIRCUIT BOARD graphics cards. If your particular HD 7950 model uses a custom MSi design circuit board, it won't be compatible.

[LogicalDrm]

You can't flip the side fans, and yes I know I can just take a screenshot 

 

Can't flip side fans? Why not?

 

75C is pretty normal load temp for GPU. Yes, you can get it run cooler (~60-65C), but in your case I would instead find out when does GPU fan become irrelevant for cooling. So finding speed that gives same amount of cooling than 5% more speed. I saw on graphs that having extra fan, GPU fans run 30rpm slower.