Question System fan curves

[ARTOS99]

Hi.

So, I want to mess around a bit with the fan curves in the bios to achieve optimal airflow for better temperatures. I'm using an ASRock Z790 mobo. My system airflow is as follows:

2x Arctic P12 120mm as intake at the bottom
3x 120mm from GPU radiator (Sapphire RX 6900 XT Toxic Extreme Edition)
3x Arctic P12 120mm as exhaust at the top (CPU Radiator for Arctic Liquid Freezer II)
1x Arctic P14 at the back as exhaust.

Case is an E-ATX Fractal Meshify 2 Lite TG.

All the Arctic fans can be controlled trough the BIOS, and the GPU ones are automatic from GPU load.

This means that most of the time, when browsing, watching videos or playing lighter games (Death Stranding per example was really light, GPU fans were off most of the time) I'm running negative pressure. GPU fans will only start sucking in air when GPU gets more load. When playing FH5 (all maxed out at 1440p), CPU will sit around 55°C on average and GPU at same temperature.

So, taking all this in mind, what's the best fan curve I can set? Leave it in performance mode? Noise levels is not a factor, as I can't hear it with headphones, even at top prolonged loads.

 

[Lutfij]

You forgot to mention the make and model of the case. Please include it and perhaps the fan curves you see shown in BIOS.

 

[Lafong]

Hi.

So, I want to mess around a bit with the fan curves in the bios to achieve optimal airflow for better temperatures. I'm using an ASRock Z790 mobo. My system airflow is as follows:

2x Arctic P12 120mm as intake at the bottom
3x 120mm from GPU radiator (Sapphire RX 6900 XT Toxic Extreme Edition)
3x Arctic P12 120mm as exhaust at the top (CPU Radiator for Arctic Liquid Freezer II)
1x Arctic P14 at the back as exhaust.

All the Arctic fans can be controlled trough the BIOS, and the GPU ones are automatic from GPU load.

This means that most of the time, when browsing, watching videos or playing lighter games (Death Stranding per example was really light, GPU fans were off most of the time) I'm running negative pressure. GPU fans will only start sucking in air when GPU gets more load. When playing FH5 (all maxed out at 1440p), CPU will sit around 55°C on average and GPU at same temperature.

So, taking all this in mind, what's the best fan curve I can set? Leave it in performance mode? Noise levels is not a factor, as I can't hear it with headphones, even at top prolonged loads

"the best fan curve I can set".............you are in the perfect position to find out by your own experimentation. Much better position than any of us could possibly be.

9 fans, so many dozens of possible combinations. You'll likely find that many of them result in nearly identical temps.

It's mostly a situation of at what point you decide "that's good enough".

If you, instead of "good enough", decide that you want the absolute lowest temps out of say a hundred different fan combinations, then you are in for a lot of work....probably dozens of hours. You get to decide if that much time would be "worth it".

If you are highly fearful of temperatures, you might think it would be "worth it". That's an individual personal judgement.

Regardless, we can only speculate. You are in the driver's seat at the controls and can find out for a fact.

 

[ARTOS99]

"the best fan curve I can set".............you are in the perfect position to find out by your own experimentation. Much better position than any of us could possibly be.

9 fans, so many dozens of possible combinations. You'll likely find that many of them result in nearly identical temps.

It's mostly a situation of at what point you decide "that's good enough".

If you, instead of "good enough", decide that you want the absolute lowest temps out of say a hundred different fan combinations, then you are in for a lot of work....probably dozens of hours. You get to decide if that much time would be "worth it".

If you are highly fearful of temperatures, you might think it would be "worth it". That's an individual personal judgement.

Regardless, we can only speculate. You are in the driver's seat at the controls and can find out for a fact.

Damn, you went philosophical and I loved it!

As a fun fact, I ended up discovering that I can actually mess around with the GPU fans as well. They come with a 0 RPM until 40°C (Hot-spot temperature), but I ended up doing a few tests and minimum RPM I can set is 38%. I messed around a bit with FH5 benchmark and before I found out it was measuring the hot-spot, I set 100% at 70°C. Found the not so fun way that it's so but so noisy at max RPM xD.

But since I can now change these, I'm now figuring out the curves for better temperatures. I'm thinking of running negative pressure for CPU temps below 45 and positive after that. Like this because I noticed that when CPU goes above 45, it's when I'm gaming and the GPU is at 70% loads. So Im trying to balance out everything.

Last test I had, during the FH5 benchmark (I always run maxed out at 1440p), CPU and GPU average temps were 50 and 53 respectively. I think that's good, not sure.

I also figured that these temos are in Portuguese Northern Summer weather, meaning ambient temperature is around 30-35°C. So for winter I'll probably change the curves as well as ambient temperature will drop to between 0-10°C

 

[ARTOS99]

You forgot to mention the make and model of the case. Please include it and perhaps the fan curves you see shown in BIOS.

I updated it now. As for the curves, they came at balanced, but I'm messing around a bit as I discovered that I can change the GPU fan curves.