Which graphic card will fit?

Good morning,

I need a computer for professional applications, mainly 3d modeling and rendering. In August, I purchased hardware with the specifications below, but unfortunately the Quadro graphics card completely fell on large 3d models. I wonder if the RTX 3060 ti will be a good replacement here? Can I even install such a graphics card on my motherboard with this specification? I will be grateful for any help. Thank you.

I currently have equipment with the following specifications:

Processor: Intel Xeon CPU E5-1650 v3 @ 3.5ghz
Graphics: nVidia Quadro M4000 8GB GDDR5

Motherboard: DELL 0k240y
685W power supply
SSD drive

IMHO in your case a replacement graphics card is a total waste of money. If your models are so bloated that they won’t run adequately on your present system, no available hardware upgrade will give an adequate performance boost.
SketchUp is a single-threaded heavily CPU-dependent application. Your graphics card cannot increase throughput of geometry through your CPU. You must revise your modelling habits.