ROG STRIX Z790-A GAMING WIFI And RTX A4000 power issue

[Corrosion37]

I have the ROG STRIX Z790-A GAMING WIFI with a 4090 on the top PCIEx16 slot. I have a RTX A4000 on the bottom PCIE16 X4 slot. the A4000 only pulls 50 watts of power max from either pci16 x4 slots. i took out the 4090 and tried the A4000 in the top pci slot and it pulls 140 watts. I tried with no 4090 in both the pcie4 x4 slots and pulls 50 watts max. 

I installed my Radeon Pro w6600 and it pulls its 100 watts fine in the PCI X4 slots. I tested the A4000 in one of my other builds GA-AX X370 on both the pciex4 x16 and x4 slot and pulls 140 watts. Ive disabled all pcie power saving in bios. I installed another m.2 and tried windows 10. Both windows 10 and 11 same issue.

Ive changed firmware on the A4000 from dell to PNY same issue. 

Is there something im missing in the bios? The fact that it works with the w6600 but not the a4000 but the a4000 works fine in one of my other motherboards im not sure where to go from here?

A4000 power limits from nvidia-smi -q -d power

 

[Jiaszzz_ROG]

Hello @Corrosion37 

Thank you for reaching out to us.
May I kindly inquire if you have noticed any abnormalities in usage besides the power consumption difference, such as downclocking or throttling?
If the NVIDIA RTX A4000 refers to the reference model, could you confirm if installing the reference drivers makes any difference?

If the above suggestions do not resolve the issue, could you kindly provide the current BIOS version and share the following information after clearing CMOS, with no manual configurations applied:
- The driver version and VBIOS version of the RTX A4000
- Screenshots of FurMark, CPU-Z, and GPU-Z results under the following scenarios:
1. RTX 4090 installed in PCIEX16(G5), RTX A4000 in PCIEX16(G4)_2
2. RTX A4000 in PCIEX16(G5)
3. RTX A4000 in PCIEX16(G4)_2
- Screenshots of advanced power management settings or any relevant power-related configurations in your system
- The PSU, RAM model and part number, along with two .txt files generated in your Windows system by following these steps:
1. Press WIN + R on your keyboard to open the Run dialog, and type dxdiag → click OK.
2. Click Save All Information and select a save location → click Save.
3. Repeat the same steps with msinfo32 instead of dxdiag to generate the second file.
You may upload the files to cloud storage, grant access, and share a link with us for further investigation. 

Thank you.