>>106982289
>https://de.pcpartpicker.com/list/4tHk2x
>Budget 1500-1750€ in Germany.
>I'm keeping my old case and some big HDDs
>>106982463
>Since I don't often upgrade my pc I want to make sure I future proof it a bit, hence the 9800x3d and 64gb ram.
I don't really know how much future-proofing an extra 5% uplift the 9800X3D has over the 7800X3D is gonna offer you in reality (you say you don't upgrade often but you could still grab a Zen 6/7 X3D flagship in about 4-5 years as a drop-in upgrade in this AM5 motherboard):
https://www.techpowerup.com/review/amd-ryzen-7-9800x3d/21.html
https://www.youtube.com/watch?v=X0oimg79NZ8
Grab a discounted tray 7800X3D while they're still in-stock:
https://de.pcpartpicker.com/product/CzZWGX/amd-ryzen-7-7800x3d-42-ghz-8-core-oemtray-processor-100-000000910

Slightly cheaper RAM that has the same effective speed:
https://de.pcpartpicker.com/product/7yy8TW/patriot-viper-elite-5-ultra-64-gb-2-x-32-gb-ddr5-6400-cl32-memory-veu564g6432k

Slightly overpaying for the NVME:
https://de.pcpartpicker.com/product/VYqrxr/kioxia-exceria-plus-g3-2-tb-m2-2280-pcie-40-x4-nvme-solid-state-drive-lsd10z002tg8
https://www.techpowerup.com/review/kioxia-exceria-plus-g3-2-tb/19.html
Still uses TLC NAND for the higher endurance, and the speed difference between NVMEs is negligible for client usage.

Slightly overpaying for the PSU:
https://de.pcpartpicker.com/product/gWbwrH/seasonic-focus-gold-750w-80-gold-certified-semi-modular-atx-power-supply-ssr-750fm

Edited PCPP List: https://de.pcpartpicker.com/list/XMxy6Q
^ ~160€ Saved