CPU Fan Curve Issue

[Paul Rudd]

This is my current fan curve set in my BIOS.

 

CPU Smart Fan Control Enabled

 

CPU Fan Level 1 Temp 40/40
CPU Fan Level 2 Temp 50/55
CPU Fan Level 3 Temp 55/70
CPU Fan Level 4 Temp 65/85

 

CPU Fan Level 1 Speed 15/13
CPU Fan Level 2 Speed 45/38
CPU Fan Level 3 Speed 65/63
CPU Fan Level 4 Speed 85/100

 

The numbers on the left are what I have them now set to. The numbers on the right were what they were set to by default.

 

My issue is, when my CPU hits 58 degrees while gaming(which it's never even hit before), it never goes over 40% fan speed. But I have it set to go up to 65%.

 

Is this because I have Smart Fan Control enabled?

Or does Smart Fan Control do whatever numbers I put in to these 8 slots?

Or does disabling Smart Fan Control do whatever numbers I put in to these 8 slots?

[Alex Atkin UK]

I believe Smart Fan does whatever you put in there, the boxes will likely disappear or grey out if you turn it off.  Easy enough to test though.

[Paul Rudd]

15 minutes ago, Alex Atkin UK said:

I believe Smart Fan does whatever you put in there, the boxes will likely disappear or grey out if you turn it off.  Easy enough to test though.

Well I just disabled it and they all disappeared. So now only one question remains, why is the fan speed not going above 40% when my CPU temp is hitting 56-58 degrees? It should make the fan speed run near 65%.

[Guest]

9 minutes ago, A Random Dude said:

Well I just disabled it and they all disappeared. So now only one question remains, why is the fan speed not going above 40% when my CPU temp is hitting 56-58 degrees? It should make the fan speed run near 65%.

Sometimes a BIOS will use a different temperature source than you would expect, running benchmarks and using a tool like HWinfo or Argus Monitor or something you can try to find it. For example, my Asus Z97-A uses "PECI0" as its CPU temperature which doesn't go as high.

[Paul Rudd]

36 minutes ago, Dreamic said:

Sometimes a BIOS will use a different temperature source than you would expect, running benchmarks and using a tool like HWinfo or Argus Monitor or something you can try to find it.

This is what CPU HWMonitor shows. No clue what to look for here.

[Guest]

Temperatures. Run a CPU benchmark like CineBench and look at which temps rise up a meaningful amount.

Should be one of the ones under the motherboard category if its what I'm thinking.

Then you can base your fan curve off that temp if its what your BIOS is using as its CPU temp.

 

For example, highlighted is the temp my BIOS actually uses for CPU:

Its 56c max is about 10 degrees lower than every other CPU reading. 

Could explain why your fans are running slower than expected, but you can just adjust your curve accordingly.

[Paul Rudd]

45 minutes ago, Dreamic said:

Run a CPU benchmark like CineBench and look at which temps rise up a meaningful amount.

When I run CineBench, how do I view the temps? This seems like a complicated process. Is there a way to just use MSI AB to do a CPU fan curve?

[Guest]

19 minutes ago, A Random Dude said:

When I run CineBench, how do I view the temps? This seems like a complicated process. Is there a way to just use MSI AB to do a CPU fan curve?

You were looking at the motherboard temps they're just right here:

It will record the minimum and maximum temperatures.

Sorry if I'm confusing.

Basically all I'm saying is your BIOS may simply be using a different CPU temperature source which doesn't get as hot as what you've made your fan curve for.

 

You can probably just adjust it so it does hit 65% when you want it to though right

[Paul Rudd]

1 minute ago, Dreamic said:

Basically all I'm saying is your BIOS may simply be using a different CPU temperature source that doesn't get as hot as what you've made your fan curve for.

 

You can probably just adjust it so it does hit 65% when you want it to though right

I understand this. But it seems difficult. I just installed CineBench. When I click on run beside CPU in CineBench, how long will it take? And what do I do after it is done? And do I need to have anything else running while running the CPU test?

[Guest]

4 minutes ago, A Random Dude said:

I understand this. But it seems difficult. I just installed CineBench. When I click on run beside CPU in CineBench, how long will it take? And what do I do after it is done? And do I need to have anything else running while running the CPU test?

Shouldn't be more than a couple minutes and just keep HWMonitor open/running.

Basically just curious what those temps max out at, as one of them could be your BIOS CPU temperature.

[Paul Rudd]

1 minute ago, Dreamic said:

Shouldn't be more than a couple minutes and just keep HWMonitor open/running.

Basically just curious what those temps max out at

I just ran the test and scored 458. But I didn't keep HWMonitor open. Will leave it open and run it again. I'm guessing I'm looking at those temps you highlighted.

[Paul Rudd]

18 minutes ago, Dreamic said:

Basically just curious what those temps max out at, as one of them could be your BIOS CPU temperature.

Okay, here's a screenshot I took during the last 10 seconds or so of the test.

Weird that it says I'm using Windows 8, I'm using Windows 10. It probably shows what was first installed I guess. So what are we looking at here?

[Guest]

I'm just kind of confused honestly as to whats wrong? TMPIN3 looks like it would be what your BIOS could be using but it doesn't matter, its not any lower than the rest of your CPU temps from further down.

Nothing even exceeds 50c. If you set it so your fan hits 100% at 45c or 50c, does it not listen?

 

[Paul Rudd]

4 minutes ago, Dreamic said:

If you set it so your fan hits 100% at 45c or 50c, does it not listen?

I've never tried that. This may be something I don't exactly want to tamper with. May just have to live with what I've got. 

[Guest]

6 minutes ago, A Random Dude said:

I've never tried that. This may be something I don't exactly want to tamper with. May just have to live with what I've got. 

From your original post you say you have it set up so your fan hits 55% speed at 50c?

And the pics you posted show your fan is reaching 1387rpm at 49c~.

The Cryorig C7 has a max speed of 2500rpm and 55% of 2500rpm is 1375.

So it seems like its doing exactly what you set it up to do?

 

 

[Paul Rudd]

11 minutes ago, Dreamic said:

From your original post you say you have it set up so your fan hits 55% speed at 50c?

Where did I post this? I have it set up so my fan hits 45% speed at 50c.

3 hours ago, A Random Dude said:

CPU Fan Level 1 Temp 40/40
CPU Fan Level 2 Temp 50/55
CPU Fan Level 3 Temp 55/70
CPU Fan Level 4 Temp 65/85

 

CPU Fan Level 1 Speed 15/13
CPU Fan Level 2 Speed 45/38
CPU Fan Level 3 Speed 65/63
CPU Fan Level 4 Speed 85/100

 

The numbers on the left are what I have them now set to. The numbers on the right were what they were set to by default.

Here, I will take off the default numbers, maybe they confused you.

 

CPU Fan Level 1 Temp 40
CPU Fan Level 2 Temp 50           < 50 degrees
CPU Fan Level 3 Temp 55
CPU Fan Level 4 Temp 65

 

CPU Fan Level 1 Speed 15
CPU Fan Level 2 Speed 45          < 45% Fan Speed
CPU Fan Level 3 Speed 65
CPU Fan Level 4 Speed 85

 

When I'm gaming, the CPU fan speed never goes over 40% and yet my CPU temp is hitting 58 degrees. It should be hitting around 65% fan speed.

[Guest]

Oh ok sorry.

Well 45% should get you 1125pm ±10% and you got 1387rpm with 49c being the max of any of your CPU related temps.

That test didn't get hot enough to see whats going on at 58c, but it seems fine up to 49c? Actually being a bit faster than expected.

So I don't know lol

[Paul Rudd]

1 hour ago, Dreamic said:

but it seems fine up to 49c?

Yes, I think so. I'm gonna try changing the Level 2 Fan Speed from 45 to 55 and see if the fan speed goes any higher than 40% when the CPU hits 50 degrees. If our calculations are correct, it should make the fan speed hit at least 45-50%. I just played BF1 for a good hour and it's no longer hitting 58 degrees so that is good. I want to say it's staying around 50-52 degrees. Pretty much exactly what the stock cooler was getting before I just upgraded to the Cryorig C7.

 

EDIT: I just changed it from 45 to 55 and there's no difference whatsoever. I'm done trying.

[Guest]

19 hours ago, A Random Dude said:

Yes, I think so. I'm gonna try changing the Level 2 Fan Speed from 45 to 55 and see if the fan speed goes any higher than 40% when the CPU hits 50 degrees. If our calculations are correct, it should make the fan speed hit at least 45-50%. I just played BF1 for a good hour and it's no longer hitting 58 degrees so that is good. I want to say it's staying around 50-52 degrees. Pretty much exactly what the stock cooler was getting before I just upgraded to the Cryorig C7.

 

EDIT: I just changed it from 45 to 55 and there's no difference whatsoever. I'm done trying.

So HWMonitor showed it still didn't go any higher than 1387rpm? That was your previous max.

Like what if MSI AB is just being wrong...

[Paul Rudd]

21 minutes ago, Dreamic said:

Like what if MSI AB is just being wrong...

I don't think MSI AB is wrong because the fan would get louder. It's not loud at all. There's something I'm missing and I think it is in the BIOS. One thing is grayed out and it has to do with temperature. So I'm gonna go back into my BIOS and write down what it is. It may or may not matter, you may know. Brb with the results. I'll edit it onto this reply in 5 minutes or so.

 

EDIT: See next reply.

[Paul Rudd]

@Dreamic

Okay, I think this might matter in some way. Among these items in the BIOS...

 

CPU Fan Level 1 Temp 40
CPU Fan Level 2 Temp 50
CPU Fan Level 3 Temp 55
CPU Fan Level 4 Temp 65

 

CPU Fan Level 1 Speed 15
CPU Fan Level 2 Speed 45
CPU Fan Level 3 Speed 65
CPU Fan Level 4 Speed 85

 

There is one line that is grayed out. This is what it says... CPU Fan Temperature Source [CPU]

 

It seems like this one thing matters for this issue I have. I'm not able to change it for a reason I bet.

 

I also found this... https://forum.giga-byte.co.uk/index.php?topic=17443.0 

It seems this could have something to do with my issue. Randomly found it on the net.

[Paul Rudd]

@Dreamic Found yet another thread that looks quite useful because it actually has a BIOS picture that I just talked about...

 

http://www.tomshardware.com/answers/id-3702692/pwm-fan-loud.html

 

The imgur picture looks identical to what I see in my BIOS.

 

[Paul Rudd]

This is my current fan curve set in my BIOS.

 

CPU Smart Fan Control Enabled

 

CPU Fan Level 1 Temp 40
CPU Fan Level 2 Temp 50
CPU Fan Level 3 Temp 60
CPU Fan Level 4 Temp 65

 

CPU Fan Level 1 Speed 20
CPU Fan Level 2 Speed 65
CPU Fan Level 3 Speed 80
CPU Fan Level 4 Speed 90

 

When my CPU reaches 50-58 degrees the fan speed does NOT go over 50% even though I have it set to 65%.

 

Why?

 

It's as though nothing changes when I change anything with the Smart Fan Control.

 

[Guest]

According to what does it not go over 50%?

Check your HWMonitor RPM's, it actually showed your CPU Fan did respond going from like 700rpm to 1387rpm.

It never goes higher than 1400rpm?

[Paul Rudd]

1 hour ago, Dreamic said:

According to what does it not go over 50%?

MSI Afterburner.

1 hour ago, Dreamic said:

It never goes higher than 1400rpm?

It never goes over 50% fan speed. I even put the curve to run 90% fan speed when it goes over 50 degrees and it still didn't go over 50% fan speed. And the fan sounded exactly the same. If it did hit 90% fan speed, it would have gotten louder. It did not get louder.