It was nearly impossible for this price in this year. Here is the closest one I can find on Amazon

https://www.amazon.com/BOSGAME-H68-USB4-0-Graphics-%E8%BF%B7%E4%BD%A0%E6%A1%8C%E4%B8%8A%E5%9E%8B%E9%9B%BB%E8%85%A6/dp/B0C1BSKZ9W/ref=mp_s_a_1_16_sspa?keywords=ryzen+mini+pc&qid=1684990826&sr=8-16-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUFZVUxGWUNCVVlMOU8mZW5jcnlwdGVkSWQ9QTAxNDYyMzcxVEhKUzcyVFZCRUlMJmVuY3J5cHRlZEFkSWQ9QTAzMTM4NjYzQUdZWTQzQjRUU0ZUJndpZGdldE5hbWU9c3BfcGhvbmVfc2VhcmNoX2F0Zl9uZXh0JmFjdGlvbj1jbGlja1JlZGlyZWN0JmRvTm90TG9nQ2xpY2s9dHJ1ZQ==

You can see a lot 5600u within 300 USD Like this. https://www.amazon.com/-/zh_TW/ACEMAGICIAN-PC%E3%80%81AMD-12T%E3%80%81%E9%AB%98%E9%81%94-Windows-%E4%B8%89%E9%87%8D%E9%A1%AF%E7%A4%BA%E8%BF%B7%E4%BD%A0%E6%A1%8C%E4%B8%8A%E5%9E%8B%E9%9B%BB%E8%85%A6/dp/B0BPXKNYGN/ref=mp_s_a_1_13?keywords=ryzen+mini+pc&qid=1684990617&sr=8-13

But, compared the GPU 6xxx is far more fast than 5xxx. Maybe it will happened in the next year or shopping season this year.

Here is the performance about 780m the integrated GPU in CPU.

https://videocardz.com/newz/amd-radeon-780m-integrated-rdna3-gpu-is-faster-than-geforce-gtx-1650-max-q-in-new-leak