Problem Render 16k

Hi everyone, I’m having problems with a 16k panoramic render. I have 2 4090s, 96gb of ram and a 32 core cpu. crashes the PC or brings the RAM to 100%. or tells me that the gpu is not enough. I did the same render with a smaller PC and a single graphics card and the render worked. Thanks in advance

Do you have multi GPU support enabled already? Here is a thread with some details -