I’m a 3D artist planning a workstation build for Unreal Engine 5 VR Development

A quick note: I won't be using Nanite or Lumen for my workflow. I’m focusing on a more traditional high-poly workflow with baked lighting and standard LOD systems for VR optimization.

I’m torn between two options:

1. RTX 3090 (24GB VRAM) - Used: The raw VRAM capacity is very tempting for handling massive textures and complex Arnold scenes without hitting memory limits.
2. RTX 5060 Ti (16GB VRAM) - New: Newer architecture, better power efficiency, and full warranty. But I'm worried if 16GB will be enough for high-end VR assets and Arnold renders by 2027, especially without the optimization benefits of Nanite.

The Specs:

• RAM: 32GB DDR4 (Staying on DDR4 to maximize capacity over speed).
• CPU: i5-12600K

The Question: For a non-Nanite/Lumen workflow in VR, is that extra 8GB of VRAM on the 3090 a "must-have," or is the 5060 Ti's 16GB sufficient for the next few years? How much does the lack of Nanite increase the pressure on VRAM in your experience?

Thanks!