Personally I am avoiding any 3090 with only two 8 pin power as they will be forever limited to 375w, the same as 3080. I have a feeling these need lots of power to keep a good boost. I have heard whispers some later AIB cards will have 500w bios.
I'm an idiot - do we know which one's have just two 8 pin power connectors?
Ahhh it could be, I thought I read somewhere that is was 340, could be my mistake though. I had a quick google and found this about the 3080 triois the msi gaming x power limited? Thought it was 370w?
In the case of the Gaming X Trio, the power limit is set to 340 W (vs. 320 W on FE)


