Question Exhaust fan advice

[sybex9]

Hi,
I would like to replace my exhaust fan on my PC, the fan I have at the moment is an unknown make which is 140mm
my CPU Cooler is pulling in air from the front of my midi Case and the Exhaust fan is pushing air out.
Please can anyone advice on a make and model of a fan which would be efficient.
Many thanks in advanced.

Case: Fractal Design S2
PSU: Corsair HX850i
Motherboard: Gigabyte Z790 Aorus Elite AX
CPU: Intel i7-13700K
GPU: Gigabyte GeForce RTX 4070 Gaming OC
RAM: 4 x Corsair Dominator 16 GB DDR5-5600
HD 1: Samsung SSD 980 Pro 2 TB
HD2: Samsung SSD (70 EVO Plus 1 TB
HD3: WD 2 TB Black
HD4: WD 2 TB Black
Sound Card: Creative Sound Blaster ZX
CPU Cooling: Corsair H150i RGB Elite
Rear Exhaust Fan: 140mm Unknown
OS Windows 11 Pro

 

[punkncat]

What price point are you interested in?

For inexpensive fans, I like Arctic. For GOOD fans, I like Noctua.

 

[sybex9]

What price point are you interested in?

For inexpensive fans, I like Arctic. For GOOD fans, I like Noctua.

Price wise I'm not to bothered, I would rather pay a premium price and buy good quality fans.

 

[Zerk2012]

Hi,
I would like to replace my exhaust fan on my PC, the fan I have at the moment is an unknown make which is 140mm
my CPU Cooler is pulling in air from the front of my midi Case and the Exhaust fan is pushing air out.
Please can anyone advice on a make and model of a fan which would be efficient.
Many thanks in advanced.

Case: Fractal Design S2
PSU: Corsair HX850i
Motherboard: Gigabyte Z790 Aorus Elite AX
CPU: Intel i7-13700K
GPU: Gigabyte GeForce RTX 4070 Gaming OC
RAM: 4 x Corsair Dominator 16 GB DDR5-5600
HD 1: Samsung SSD 980 Pro 2 TB
HD2: Samsung SSD (70 EVO Plus 1 TB
HD3: WD 2 TB Black
HD4: WD 2 TB Black
Sound Card: Creative Sound Blaster ZX
CPU Cooling: Corsair H150i RGB Elite
Rear Exhaust Fan: 140mm Unknown
OS Windows 11 Pro

This should be the back fan that came with the case 2vin front and one back.

Dynamic X2 GP-14

www.fractal-design.com

 

[punkncat]

Price wise I'm not to bothered, I would rather pay a premium price and buy good quality fans.

In this case I would suggest the Noctua A14 line or Be Quiet Silent Wings

 

[geofelt]

Why do you think your rear fan should be changed.
If it is failing, then certainly.
Otherwise, there may well be better places to spend discretionary funds.
Noctua really does make quality fans.
You can get 140mm units in a variety of speeds up to 3000 rpm barn burners(read noisy)
Where do you have your aio radiator placed?

 

[sybex9]

Why do you think your rear fan should be changed.
If it is failing, then certainly.
Otherwise, there may well be better places to spend discretionary funds.
Noctua really does make quality fans.
You can get 140mm units in a variety of speeds up to 3000 rpm barn burners(read noisy)
Where do you have your aio radiator placed?

Hi,
The fan is not failing, I was just after getting the lowest case temperature as possible so that my RTX 4070 would run cooler, my GPU runs at 68 Deg C when playing COD. The AIO radiator is at the front of the case, pulling in air.
Zerk 2012 has just brought it to my attention that that the fans on my case should be a Fractal fan which I have now checked on which is great news.
I guess the only way left of lowering the temperature is to fit another exhaust fan in the top of the case which is what I originally wanted to a void.

 

[geofelt]

I would not worry, you are doing fine.
Graphics cards do get hot, but they are built to do so.
80c. would not be bad.

Your case temperatures are higher because of a front mounted aio.
All of the cpu heat is entering the case and impacts not only your graphics card, but the motherboard vrm's.
You may be better off to mount the radiator on top exhausting the hot air if you can.
That is at the expense of slightly less effective cpu cooling.
Pick your poison.

If you would consider air cooling, a top air cooler will also do the job.
Noctua maintains a database of suitable coolers for various processors.
Here is the table for the 13700K:

INTEL Core i7-13700K | CPU Compatibility | Noctua Compatibility Centre

Series: Raptor Lake-S, Socket: LGA 1700

ncc.noctua.at

13th gen processors manage heat differently.
You may want to read this article on running a 13900K with less than top coolers:

Core i9-13900K Cooling Guide: Testing Intel's Flagship With Budget Air and Big AIOs

The Core i9-13900K can push even the most capable liquid coolers to their limits, but you don’t lose that much performance if you go with budget-priced air cooling.

www.tomshardware.com

 

[Zerk2012]

Hi,
The fan is not failing, I was just after getting the lowest case temperature as possible so that my RTX 4070 would run cooler, my GPU runs at 68 Deg C when playing COD. The AIO radiator is at the front of the case, pulling in air.
Zerk 2012 has just brought it to my attention that that the fans on my case should be a Fractal fan which I have now checked on which is great news.
I guess the only way left of lowering the temperature is to fit another exhaust fan in the top of the case which is what I originally wanted to a void.

68C is really on the cool side for a video card.

 

[Paperdoc]

While it is true that having the AIO rad system as your front intake fans means the air intake to the case is pre-warmed, the impact is small - normally only a few degrees. But those rad fans are the ONLY air supply. Regarding exhaust fans for balance of air flow, you have one for that, PLUS the exhaust of hot air from the video card itself. I suspect that increasing the air EXHAUST with a higher-performance rear fan might actually "rob" some of the air flow that is available to flow through the video card and exhaust by its own internal fan. So perhaps you could use an additional intake fan for more air SUPPLY.

Where? Consider this as an option. I see in the case manual that the PSU is in a chamber at the bottom, and as usual it has an air vent system to the rear. Within that chamber you can mount one or two added fans at the bottom. An intake fan there would suck air in from under the case and blow it upwards. Now, at the FRONT end of that PSU chamber there is a baffle between it and the front interior of the case, and that can be removed at your option. So, if you mount a fan at the bottom front location and remove that panel, you will have more outside air flowing into the case at the bottom front, and hence available to the video card for use in its own cooling work.

 

[sybex9]

While it is true that having the AIO rad system as your front intake fans means the air intake to the case is pre-warmed, the impact is small - normally only a few degrees. But those rad fans are the ONLY air supply. Regarding exhaust fans for balance of air flow, you have one for that, PLUS the exhaust of hot air from the video card itself. I suspect that increasing the air EXHAUST with a higher-performance rear fan might actually "rob" some of the air flow that is available to flow through the video card and exhaust by its own internal fan. So perhaps you could use an additional intake fan for more air SUPPLY.

Where? Consider this as an option. I see in the case manual that the PSU is in a chamber at the bottom, and as usual it has an air vent system to the rear. Within that chamber you can mount one or two added fans at the bottom. An intake fan there would suck air in from under the case and blow it upwards. Now, at the FRONT end of that PSU chamber there is a baffle between it and the front interior of the case, and that can be removed at your option. So, if you mount a fan at the bottom front location and remove that panel, you will have more outside air flowing into the case at the bottom front, and hence available to the video card for use in its own cooling work.

I never even thought of that, I shall look into that option, thank you

 

[Paperdoc]

I'll add more comments. I think you need to adjust your expectations.

First, I agree with others above that the temperatures you cite are not unreasonable. What your video card does on its own (not involving the mobo cooling systems) is very typical of all such systems. These are TEMPERATURE control systems. That is, their aim is to keep the TEMPERATURE as measured by a relevant sensor (in this case, one inside the GPU chip) close to a specified target, and their METHOD is by altering the speed of a cooling fan to remove heat. Your card has some pre-set parameters for this cooling control loop, so it is VERY likely achieving the temperature the designed INTENDED. Within the software utility supplied with your video card used to configure that card, there are screens for you to observe the GPU temperature, the fan speed, and so on. Unless they show you that the fan is forced to operate at almost max speed under heavy workload, the system is doing exactly as the designers intended. Those screens MAY even allow you to change the default settings to make the fan run faster at any specified sped, thus cooling it down more than the designers intended. But unless you do that, the temperature will not change by more than a couple degrees. What WILL change as workload, heat generation and removal alter, is the SPEED of the fan required to maintain the target temperature.

So, IF you make changes, whether adding a fan or whatever, what YOU need to track to measure the impact of the change is the FAN SPEED on the video card, not the tenperature reading. Unless, of course, you can change the actual temperature target using that utility.