[D] Are there any challenges with using (NVLinked) 2 x RTX 3090 for deep learning?

I primarily work on vision tasks. I already have an RTX 3090, but I am considering adding another one to my rig and NVLink them. Are there any potential challenges and drawbacks to doing so? The power requirements should be sorted: I have a 1050W gold-rated power supply, and my case has enough airflow to handle them both (I can always add extra fans if they are insufficient).

Is doing so a good idea, or will it be a headache …

challenges deep learning machinelearning power requirements rtx rtx 3090 vision work