MP 1,1-5,1 FAN SPEED CONSTANTLY HIGH AFTER CPU AND MEMORY UPGRADE!!!

[Jking87]

Hello! I recently upgraded my Mac Pro 5,1 Memory and Processors from stock to

2 x 3.33 GHz 6-Core Intel Xeon and 96 GB 1333 MHz DDR3 respectively.

I also upgraded the graphics card to the Radeon RX 580 8192 MB.

Everything seemed to go well with the upgrade, everything shows up as it should, and there is a noticeable difference in the performance of the computer.

However my Intake and Exhaust fans now seem to be spinning on max while the computer is idle and I can't seem to figure why.

Not sure what cpu temps are normal but ill add a screenshot of the numbers im getting.

Any help would be greatly appreciated.

Thanks in advance.

 

[quattro4ever]

I would start with a SMC reset,
if that doesn't help, insert original graphics card and RAM, if possible

 

[h9826790]

You better upload the screen capture ASAP, and please make sure it cover as much details as possible (e.g. not just the fan speed, but all temperature readings). Otherwise, not much we can do apart from random guess (e.g. bad CPU / heatsink installation)/

 

[wazgilbert]

I would start with a SMC reset,
if that doesn't help, insert original graphics card and RAM, if possible

I have to admit, I don't get the SMC reset. from the standard instructions - turn off, remove AC power cord, wait min 15s and then plug back in, wait 5s to push power button.
Isn't that going to happen every time you unplug it to safely access the inside of the machine? especially if you're adding/replacing components. Effectively you're doing an SMC reset every time you pull the plug out the wall, or is there something extra?

 

[Riku7]

I absolutely can't tell if this is the issue in your case, but my Mac Pro which is flashed to 5,1 starts up with the fans running very loudly. For some reason, running a 3D rendering test with OpenGL Extensions Viewer calms it down. So I let it run that test (takes less than a minute) when I first boot up the computer, and it's good to go.

Before this, my Mac Pro has had an issue with a Northbridge diode temperature sensor coming loose, which leads to the wrong reading, then to the fans spinning too fast. As I've understood, this is a common issue with this model. Get Macs Fan Control or similar, and see how hot the Northbridge diode is. It's quite hot, but near boiling hot is too hot. Of course, checking the temperatures might reveal some other parts running unexpectedly hot too, suggesting a different potential source for the problem. If it is the Northbridge diode, unfortunately I don't personally have directions on how to fix it because the person who sold this Mac Pro to me kindly contacted me a year after the sale to tell me that he has found out a way to fix it and would fix mine if I brought it over. But since it's a known issue, that information is probably floating around on forums such as these anyway.

 

[KeesMacPro]

I absolutely can't tell if this is the issue in your case, but my Mac Pro which is flashed to 5,1 starts up with the fans running very loudly. For some reason, running a 3D rendering test with OpenGL Extensions Viewer calms it down. So I let it run that test (takes less than a minute) when I first boot up the computer, and it's good to go.

This sounds like a known bug/issue .
I assume this thread may help to solve it:

AirOut: A solution to the racing fan bug

Introduction The racing fan bug is a well known issue that affects certain cMP systems with upgraded video cards, particularly systems with SMC version 1.39f5. On these systems the PCI, PS, and booster fans spin abnormally fast at idle, causing unnecessary noise. Although the issue appears to...

forums.macrumors.com

 

[pippox0]

It seems too much consumption of energy power and higher temperature...

Try to reduce ram or remove graphics card
Then see if fan speed is lower

 

[h9826790]

I absolutely can't tell if this is the issue in your case, but my Mac Pro which is flashed to 5,1 starts up with the fans running very loudly. For some reason, running a 3D rendering test with OpenGL Extensions Viewer calms it down. So I let it run that test (takes less than a minute) when I first boot up the computer, and it's good to go.

Before this, my Mac Pro has had an issue with a Northbridge diode temperature sensor coming loose, which leads to the wrong reading, then to the fans spinning too fast. As I've understood, this is a common issue with this model. Get Macs Fan Control or similar, and see how hot the Northbridge diode is. It's quite hot, but near boiling hot is too hot. Of course, checking the temperatures might reveal some other parts running unexpectedly hot too, suggesting a different potential source for the problem. If it is the Northbridge diode, unfortunately I don't personally have directions on how to fix it because the person who sold this Mac Pro to me kindly contacted me a year after the sale to tell me that he has found out a way to fix it and would fix mine if I brought it over. But since it's a known issue, that information is probably floating around on forums such as these anyway.

This sounds like a known bug/issue .
I assume this thread may help to solve it:

AirOut: A solution to the racing fan bug

Introduction The racing fan bug is a well known issue that affects certain cMP systems with upgraded video cards, particularly systems with SMC version 1.39f5. On these systems the PCI, PS, and booster fans spin abnormally fast at idle, causing unnecessary noise. Although the issue appears to...

forums.macrumors.com

That bug won't affect the Intake / Exhaust fan.

OP is facing another issue. But until he upload the sensors reading, there is not much we can do about it.

 

[KeesMacPro]

That bug won't affect the Intake / Exhaust fan.

OP is facing another issue. But until he upload the sensors reading, there is not much we can do about it.

I referred to the issue @Riku7 described.

Absolutely, without sensor readings and more details, the issue of the OP remains unclear.