Any benefit to doing this?

My current main PC:

i7-13700KF | ASUS Z690M-PLUS D4 | RTX 4090 24GB + RTX 3090 Ti 24GB | 128GB Corsair Vengeance DDR4-3200 | FSP Hydro G Pro 1000W

I’m thinking of keeping the 4090 on my main PC and putting the 3090 Ti in a separate dedicated LLM/AI box, mainly for Strata/local LLMs, while keeping my main PC free for ComfyUI, gaming, etc.

I already have these spare parts:

\- 2×32GB Corsair Vengeance DDR4-3600

\- 2×8GB TeamGroup DDR4

\- H370 motherboard

\- i5-8400

So I’d basically only need to buy a PSU.

Is there any real benefit to separating the LLM workload like this, or am I better off keeping both GPUs in my main system?