You can do way more performance than that for not much more money, if you're willing to try something unorthodox in a different way:

AOOSTAR Gem 12 Max Mini PC

$580 ($550 for Amazon simps)

CPU: Ryzen 7 8745HS ( 8C / 16T / base 3.8 Ghz / max 5.10 Ghz)

(approximately multi thread performance equivalent to a Ryzen 5 9600 AM5 socket)

RAM: 24 GB DDR5

SSD: 1TB

Power: Max draw 70w (on its own)

https://www.amazon.com/dp/B0GGB5L9P7/?psc=0

XFX RX 9070 OC (16 GB GDDR6)

$640

Power: ~220w

https://www.amazon.com/dp/B0DXLBTL4B/?psc=1

EG01 OCulink eGPU Dock

$100

https://www.amazon.com/dp/B0G1STZM7H/?psc=1

ASRock PRO-650 G PSU

$50

Power: 650w (way more than what you need)

Gold Rated

https://www.amazon.com/dp/B0FSTL4VDZ/?psc=1

Total pretax cost: ~$1370

Cost %: +~17% compared to Playnix

50% more RAM, also its DDR5

100% more SSD capacity

GPU 3DBenchmark = +~60%

OCuLink is at worst gonna knock 5%-10% off of performance/fps, compared to similar hardware just connected directly via PCIe 16.

... should basically crush almost anything at 1440p, if you turn off RT when you want higher fps.

Or you can maybe find a cheaper 9070, or perhaps go with a 500w PSU, which is still more than enough, to lower that total cost a bit.