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Low voltage readings on Z390-F mb

Nugisrott
Level 7

‎05-30-2020 02:52 AM - last edited on ‎03-05-2024 08:01 PM by Community Admin

Hey,

I got some pretty low voltage readings on my Strix z390-f motherboard and Im not sure whether its cause of bad mb or psu.

HW monitor reports:
+5V 4.920-4.960V
+3.3V (which im specially concerned off) 3.200-3.248V
+12V 11.808-11.904

Specs:
9600k @ 4.6ghz (all cores)
Z390-F
2x8gb G-skill 3200mhz, xmp enabled
Corsair RM750i
2x Samsung 850Evo 256gb Ssd-s

Im afraid that I might have damaged my mb during cleaning the backside of it and accidentally ,,wiped off" the tip of small soldering point.
Since its near vram area (top left side), could it be possible that it causes less-efficient power delivery, affecting mainly 3.3v?

I added some pics.
85047
85048
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2 REPLIES 2

Dkenan
Level 7

‎05-30-2020 11:05 AM

In my oppinion you are well within perfect voltage ranges:

PSU Tolerance Table
Voltage Rail Tolerance Minimum Voltage Maximum Voltage
+3.3VDC ± 5% +3.135 VDC +3.465 VDC
+5VDC ± 5% +4.750 VDC +5.250 VDC
+5VSB ± 5% +4.750 VDC +5.250 VDC
-5VDC (if used) ± 10% -4.500 VDC -5.500 VDC
+12VDC ± 5% +11.400 VDC +12.600 VDC
-12VDC ± 10% -10.800 VDC - 13.200 VDC
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Nugisrott
Level 7
In response to Dkenan

‎05-31-2020 05:26 AM

Dkenan wrote:
In my oppinion you are well within perfect voltage ranges:

PSU Tolerance Table
Voltage Rail Tolerance Minimum Voltage Maximum Voltage
+3.3VDC ± 5% +3.135 VDC +3.465 VDC
+5VDC ± 5% +4.750 VDC +5.250 VDC
+5VSB ± 5% +4.750 VDC +5.250 VDC
-5VDC (if used) ± 10% -4.500 VDC -5.500 VDC
+12VDC ± 5% +11.400 VDC +12.600 VDC
-12VDC ± 10% -10.800 VDC - 13.200 VDC


Withing voltage range indeed, tho Id expect better from Corsair RMi series.
Im still not sure whether this small ,, accident" changes anything or not.
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