CPU and HDD Fans Not making MAX RPM

[lmannyr]

I have a SuperMicro X10SL7-F with 10 HDD, 3 CASE/HDD fans and 1 CPU FAN. None turn at their maximum rated RPM.

The CPU FAN is an Intel E97378-001 rated to 2800 RPM. The most I see when set to full duty is 2100-2200

2 of the 3 case fans are Noctua NF14 industrial 3K PWM. The most I see with them is 2400

The last fan is a Fractal Design Venture HP14 rated at 1500 and the most I see is 1400.

CPU is on FANA
Rest are on FAN1 FAN2 FAN4

 

[lmannyr]

These are the results of changing the duty using "ipmitool raw 0x30 0x70 0x66 1 <0 or 1 for zone> <duty cycle in hex>"

Noctua NF Industrial 3K X 2 (FAN 1 FAN 2)
0X14 = 600
0X1E = 900
0X28 = 1200
0X32 = 1400
0X3C = 1700
0X46 = 1900
0X50 = 2100
0X5A = 2300
0X64 = 2500

CPU Intel E97378
0X14 = 1000
0X1E = 1100
0X28 = 1200
0X32 = 1300
0X3C = 1400
0X46 = 1600
0X50 = 1700
0X5A = 1800
0X64 = 1900

Fractal Design HP-14PWM
0x14 = 300
0x1E = 400
0x28 = 600
0x32 = 800
0x3C = 900
0x46 = 1000
0x50 = 1200
0x5A = 1300
0X64 = 1400

 

[Glorious1]

We discussed separately a problem with the fan thresholds that may be related to this, and I will look forward to seeing how it works when that is fixed. But this looks like an across-the-board limiting, not a threshold problem.

I know Noctua supplies a Low-Noise Adaptor with some of its fans to reduce fan speeds. You don't by chance have something like that in there do you?

 

[lmannyr]

Glorious1,

Wanted more heads on this. Searched google with no similar problems.

Yup, I redid the threasholds:

Code:

CPU Temp		 | 47.000	 | degrees C  | ok	| 0.000	 | 0.000	 | 0.000	 | 95.000	| 100.000   | 100.000			
System Temp	  | 40.000	 | degrees C  | ok	| -9.000	| -7.000	| -5.000	| 80.000	| 85.000	| 90.000			 
Peripheral Temp  | 44.000	 | degrees C  | ok	| -9.000	| -7.000	| -5.000	| 80.000	| 85.000	| 90.000			 
PCH Temp		 | 51.000	 | degrees C  | ok	| -11.000   | -8.000	| -5.000	| 90.000	| 95.000	| 100.000			
VRM Temp		 | 39.000	 | degrees C  | ok	| -9.000	| -7.000	| -5.000	| 95.000	| 100.000   | 105.000			
DIMMA1 Temp	  | 35.000	 | degrees C  | ok	| 1.000	 | 2.000	 | 4.000	 | 80.000	| 85.000	| 90.000			 
DIMMA2 Temp	  | 36.000	 | degrees C  | ok	| 1.000	 | 2.000	 | 4.000	 | 80.000	| 85.000	| 90.000			 
DIMMB1 Temp	  | 37.000	 | degrees C  | ok	| 1.000	 | 2.000	 | 4.000	 | 80.000	| 85.000	| 90.000			 
DIMMB2 Temp	  | 37.000	 | degrees C  | ok	| 1.000	 | 2.000	 | 4.000	 | 80.000	| 85.000	| 90.000			 
FAN1			 | 1500.000   | RPM		| ok	| 400.000   | 500.000   | 600.000   | 3600.000  | 3700.000  | 3800.000		   
FAN2			 | 1500.000   | RPM		| ok	| 400.000   | 500.000   | 600.000   | 3600.000  | 3700.000  | 3800.000		   
FAN3			 | na		 |			| na	| na		| na		| na		| na		| na		| na				 
FAN4			 | 800.000	| RPM		| ok	| 100.000   | 200.000   | 300.000   | 1800.000  | 1900.000  | 2000.000		   
FANA			 | 2000.000   | RPM		| ok	| 800.000   | 900.000   | 1000.000  | 3400.000  | 3500.000  | 3600.000		   
Vcpu			 | 1.809	  | Volts	  | ok	| 1.242	 | 1.260	 | 1.395	 | 1.899	 | 2.088	 | 2.106			 
VDIMM			| 1.320	  | Volts	  | ok	| 1.096	 | 1.124	 | 1.201	 | 1.642	 | 1.719	 | 1.747			 
12V			  | 12.051	 | Volts	  | ok	| 10.164	| 10.521	| 10.776	| 12.918	| 13.224	| 13.224			 
5VCC			 | 5.000	  | Volts	  | ok	| 4.225	 | 4.380	 | 4.473	 | 5.372	 | 5.527	 | 5.589			 
3.3VCC		   | 3.344	  | Volts	  | ok	| 2.804	 | 2.894	 | 2.969	 | 3.554	 | 3.659	 | 3.689			 
VBAT			 | 3.075	  | Volts	  | ok	| 2.400	 | 2.490	 | 2.595	 | 3.495	 | 3.600	 | 3.690			 
AVCC			 | 3.329	  | Volts	  | ok	| 2.399	 | 2.489	 | 2.594	 | 3.494	 | 3.599	 | 3.689			 
VSB			  | 3.269	  | Volts	  | ok	| 2.399	 | 2.489	 | 2.594	 | 3.494	 | 3.599	 | 3.689			 
Chassis Intru	| 0x0		| discrete   | 0x0000| na		| na		| na		| na		| na		| na			 

FAN1 and FAN2 are the Noctuas NF14 Industrial 3K PWM. I don't know what the adapter looks like. Unless it comes already on the connector, I didn't put anything on the connector except MB connection.

FAN4 is the Fractal design and it's rated at 1500 and it's getting 1400. Happy with that I guess since it's within the + or - 20%.

The CPU FAN, same thing, rated at 2800 but it's only getting 2100 at times. Again, unless it came with the an adapter already on....

So FAN 4 seems to be working at max. Wonder if its just too much for the MB? The Noctuas are rated at 0.55 amps each. The Fractal is rated at 0.2 amps. The Intel CPU fan is rated at 0.2 amps as well.

 

[Glorious1]

Code:

FAN1			 | 1500.000   | RPM		| ok	| 400.000   | 500.000   | 600.000   | 3600.000  | 3700.000  | 3800.000		 
FAN2			 | 1500.000   | RPM		| ok	| 400.000   | 500.000   | 600.000   | 3600.000  | 3700.000  | 3800.000		  
FAN3			 | na		 |			| na	| na		| na		| na		| na		| na		| na				
FAN4			 | 800.000	| RPM		| ok	| 100.000   | 200.000   | 300.000   | 1800.000  | 1900.000  | 2000.000		  
FANA			 | 2000.000   | RPM		| ok	| 800.000   | 900.000   | 1000.000  | 3400.000  | 3500.000  | 3600.000		  

FAN1 and FAN2 are the Noctuas NF14 Industrial 3K PWM.

You need to pay attention to the minimum rating too. Those Noctua fans are rated minimum 800 RPM (+/-20%). That means if it gets below that, it might stall. If it stalls, the BMC will take over and try to rev it up to full.

Still, I don't know, those duty cycle/RPM data you showed don't look like we're dealing with thresholds, it's more like the whole range of RPMs is scaled down. Like the voltage was too low.

No way the amps could not be enough. The headers provide at least 2.5 amps I think.

 

[lmannyr]

What would you suggest the minimums be? I did 800 - 20% = 600 then 500 and 400.

Is it 2.5amps per connection or zone? Even if it was 2.5amps for the zone it should still be okay. There has to be something else. I would say the Noctua were the issue but the cpu fan is doing the same. The one Fractal is fine though. Wonder if IPMI is not reading the correct RPM? Maybe the fans are getting the right voltage and are spinning accordingly but not getting the correct readout. The CPU and Noctuas are higher than normal RPM ratings.

 

[Glorious1]

I would go maybe 800. It's 2.5 amps per fan header.

Hopefully someone will see this thread and have a good idea what the problem might be.