A RTX 5090 575W TDP using TSMC 2N = .. TDP

[5090 using TSMC 2N]

Hey NVIDIA, RTX 5090's 575W TDP is really nasty. How expensive would it be to port 5090's 512-bit chip from TSMC 4N to 2N node? 2 node jumps, and an power efficiency improvement by 30% after each full node jump, means the 575W TDP would become: 575W / 1.3 (TSMC 3N) / 1.3 (TSMC 2N) = 575W/1.3^2 = 340W TDP.

Also, while you are at it, offer a 48 GB VRAM version (using 3 GB per chip chips, instead of the current 2 GB ones).
(RTX 5090 desktop: 512-bit/32-bit per GDDR7 chip = 16 GDDR7 chips, 2 GB each = 32 GB VRAM. Using 3 GB per chip = 48 GB VRAM. The 5090 Laptop, which is a 256-bit 5080 desktop (16 GB VRAM) in disguise) is already using 3 GB per chip chips)

[allegedly]

What makes it worse is the rtx 4090 had a high tdp too but apparently in games it ran with way less wattage and didn't use anywhere close to it's max tdp. Could also undervolt to reduce power even further.

By contrast, the 5090 runs 24/7 at that close to max wattage under load apparently. At least accord to Tom @ MLID.

offer a 48 GB VRAM version

I believe they do. It's called the RTX PRO 5000.