Increased Fan Speed Leading to Increased CPU Temp

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19 Jun 2020
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Hi all, I've previously posted about having high idle temps with my new (and first time) build.

My CPU temps up anywhere between 40°c - 55°c with spikes up to anything like 65°c at idle and light use (i.e. running spotify).

However, I've played around some more with my fans today and realised that something really weird is happening.

At "Balanced" my CPU fan is operating at c. 47% and my CPU temp is between 38-47°c.

At "silent" muy CPU fan is at 20% power and my cpu temp drops instantly to a steady 28-30°c. The fans are still relatively loud too, which is a little odd.

I've triple checked fan placement, and they're all facing the correct way to air is being drawn in from the front of my case through the radiator (of the Kraken X63) and then out through the rear and rear top fan cases (the fans that come with the case).

Does anyone have any idea what's going on please?

CPU: AMD Ryzen 5 3600x
Cooler: NZXT Kraken X63 AOI water cooler - fans are set up in the front of the case pulling air in
Case: NZXT H510 (with the 2 factory fit case fans - set up at rear and rear top of case pushing air out
GPU: MSI Radeon RX 570 ARMOR 8GB Graphics Card
Motherboard: MSI MPG X570 GAMING PRO CARBON WIFI Motherboard
RAM: Corsair Vengance 16GB x 2

Hope you can help, as I'm really confused.

Cj
 
I've monitored through NZXT CAM, MSI Dragon Centre and HW Monitor - all showing the same CPU temp of 30°c with fans running at 20% and increased temps with higher fan speed.

Fan speed being REDUCED using silent mode is leading to a REDUCTION in temps of around 17°, which is what is even weirder.

Could the temp gauge on my MOBO be wrong/broken?
 
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@Brizzles - thanks. Have downloaded HWInfo64.

Running Cinebench on "Balanced" from MSI Dragon Centre and "Performance" from NZXT CAM, with cinebench score of 3406:
  • Average: 52°c
  • Max: 69.1°c
Fans are loud and during cinebench test (predictably):
  • PUMP Fan 1 : Max: 1683RPM Average: 1475RPM
  • CPU: Max: 2749RPM Average: 2487RPM
  • System FAN 1 Max: 1286 Average: 1259RPM
  • System 2: Max 916 Average: 903
  • System 3: Max 815RPM Average: 835
  • GPU Fans: 0RPM throughout - never kicked in



On "silent" turned on through MSI Dragon Centre & NZXT CAM, cinebench score of 3297
  • Average: 52.5°c
  • Max: 69.1°c
Fans are loud and during cinebench test (predictably):
  • PUMP Fan 1 : Max: 1689 RPM Average: 1435RPM
  • CPU: Max: 2749RPM Average: 2262 RPM
  • System FAN 1 Max:1289RPM Average: 1259RPM
  • System 2: Max: 915RPM Average: 902RPM
  • System 3: Max 865RPM Average: 840RPM
  • GPU Fans: 0RPM throughout - never kicked in
 
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