Rosewill VMG 750W 80+ Gold, ATX 3.0 & 3.1 Compatible, Full Modular Low-Noise Power Supply, PCIe 5.1 12V-2x6 Connector, 100% Japanese Electrolytic Capacitor, 120mm FDB Silent Fan - 5 Year Warranty

Overall its a solid build. There a are a few things I'd do a little different, but not much. Upgrade storage to 2 tb - https://www.amazon.com/Predator-GM7-2TB-SSD-BL-9BWWR-119/dp/B0CB8JJR7F/ref=nav_ya_signin?crid=3N1CTB57PSQ71&dib=eyJ2IjoiMSJ9.YifEHBMtk5gNRKri3Bi0JRgepdhOo0wcuZmynXTe2soLoCP6XqKshKx4EzoLMMBhq6OnxzeBQ3pUD_ODszvQKy_tAjDrJ2zrGQA6GHJqIzIp8r77ab2-Jo-QCoOAWnsxYG-KrDrvO6OfWwUwGqnhNQgCXaANtLLm5JHSjDK75a2KYKceVC4YC2fXscikTIrzfS4QOVpeP7Vr1_wLPhbWBEjgyMQhgG7BM6ZFh_D2VAA.1EW9N1o54ZMPRJuHHqam_a5gAXeEAaY9TpDWQDiFTsE&dib_tag=se&keywords=2tb%2Bssd%2Bpredator&qid=1782247290&sprefix=2tb%2Bssd%2Bpredato%2Caps%2C138&sr=8-1-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&th=1 As much as I prefer Nvidia, AMD is better for Bazzite/SteamOS so I'd suggest this for a steam machine replacement- https://www.microcenter.com/product/696272/asrock-amd-radeon-rx-9060-xt-challenger-oc-dual-fan-16gb-gddr6-pcie-50-graphics-card This is not a very demanding system. The Rosewill VMG PSUs are B-Tier at a great price https://www.amazon.com/Rosewill-Compatible-Low-Noise-Connector-Electrolytic/dp/B0FFQC5VGM/ref=sr_1_3?crid=O15VENUW3MUO&dib=eyJ2IjoiMSJ9.h2ffr0j9FPVQk-uUKYZG5ywC-8CGtZT_gbWY5trwzVhtA1EadvkNY-VtpyCes8wC_M3G4TBvkbBRNi4fbYwz89VamojdzdmVuYc8SRsiilN19PQy1QC1FZ_KqzNrxtWxUDnZJJPNqtw1qwT2kSHorRGW9B3h_GtSCbIRaaAakUFPHlfRBuKu-ffc8QOej5R0FlVjApedClljpWxU4AZanoFbxp5vQDdz8X8wfTyOA38.pPYOfq7JLoslp07wGEh7-1A72Gtyad5LG_6GvLyrYv4&dib_tag=se&keywords=750%2Bpsu&qid=1782249360&sprefix=750%2Bpsu%2Caps%2C165&sr=8-3&th=1

B tier, fully modular. https://a.co/d/04iEjPzL Atx 3.1, includes 12v 2x6 connector with bright orange tips (relevant if you upgrade to a nvidia 50 series gpu later). You can go for higher tier/wattage, but likely not needed unless you think you are going for a 5070ti/5080 later, then maybe look at 850w units.