AX1500i and currents less that 4.500 Amps

Ever since I got my AX1500i I noted that Corsair Link reported all the PCIe currents as zero almost all the time.

I assumed this is down to my GPUs not using any power from the PCIe supply, however recently I figured out how to read the values programmatically, so wrote some code to read them every 2 seconds and record the Average (of none zero), Maximum, Minimum and the number of times a none zero value was read (Samples). I then ran the code for about 9 hours and got:

Item Name            Current  Average  Minimum  Maximum  Samples

AX1500i Supply V     242.500  241.443  231.500  245.000   33,066
AX1500i +3.3 V         3.313    3.313    3.297    3.328      ...
AX1500i +5.0 V         5.000    4.997    4.938    5.047      ...
AX1500i +12o V        12.000   11.997   11.844   12.016      ...
AX1500i Supply A       0.672    0.609    0.566    1.766      ...
AX1500i +3.3 A         5.500    5.474    5.125    6.500      ...
AX1500i +5.0 A         6.500    6.975    6.250    8.625      ...
AX1500i +12o A        12.750   11.569   11.000   34.500      ...
AX1500i +12a A         0.000        -        -        -        0
AX1500i +12p A         0.000    5.227    4.500    6.625       24
AX1500i Supply W     162.000  146.907  139.000  430.000   33,066
AX1500i Output W     142.258  127.307  119.474  404.606      ...
AX1500i Efficiency    87.814   86.627   85.952   94.094      ...
AX1500i +3.3 W        18.000   17.717   16.500   21.000      ...
AX1500i +5.0 W        32.000   34.305   31.000   42.500      ...
AX1500i +12o W       154.000  139.227  132.000  416.000      ...
AX1500i PCIe 1 A       0.000        -        -        -        0
AX1500i PCIe 2 A       0.000        -        -        -      ...
AX1500i PCIe 3 A       0.000        -        -        -      ...
AX1500i PCIe 4 A       0.000        -        -        -      ...
AX1500i PCIe 5 A       0.000        -    4.563    4.563        1
AX1500i PCIe 6 A       0.000    5.122    4.500    7.750      274
AX1500i PCIe 7 A       0.000    4.531    4.500    4.563        2
AX1500i PCIe 8 A       0.000        -        -        -        0
AX1500i PCIe 9 A       0.000        -        -        -      ...
AX1500i PCIe A A       0.000        -    4.500    4.500        1

I was surprised no currents less that 4.500 Amps were recorded and I wondering why.

 

I assume this is down to what the PWMs report and would like to which PWMs the AX1500i uses. I checked in http://www.corsair.com/~/media/Corsair/download-files/manuals/psu/AX1500i_Manual.pdf and that does not help. Can anyone tell me the PWM part number please as I expect taking the PSU apart would invalidate my warranty.

The cutoff for the software to display information on any current is 3 amps, below that it just displays zero.

The cutoff for the software to display information on any current is 3 amps, below that it just displays zero.

 

Thank you for the reply, but my code will display currents below 3 amps were the hardware to report < 3 amps. It seems the hardware never reports currents < 4.5 amps though.

I would like to which PWMs the AX1500i uses. Does anyone know the part number please?