So I finally saved up enough for my dream PC and I actually managed to get my hands on an RTX 4090 which was way more expensive than I thought it would be but now I am kind of stuck on the power part. I keep seeing people talk about PSUs and wattage and honestly I have no idea where to start because every time I google it I get even more confused with all these numbers and letters. Like I saw something about ATX 3.0 and then some people say I need 1000 watts but then other people are saying 1200 is safer so I am just sitting here staring at my cart and not clicking buy because I am scared of picking the wrong one.

My logic was that more is better right? But I dont want to blow my house up or something if I plug it in wrong. I saw those videos of the cables melting on the cards and that really freaked me out because this card cost me like two months of rent and I would probably cry if it broke. Is there a specific brand that is just the one for this? I was looking at Corsair or maybe EVGA but then I saw some stuff about Seasonic and now my head is spinning. I really dont want to use those adapter things if I can help it because they look messy and I heard they might be the reason for the melting stuff anyway so I want something that just plugs straight in.

I am going to Micro Center here in Chicago tomorrow morning and I really want to just walk in and know what to grab without the sales guy talking me into something I dont need. My budget for just the power box part is maybe 250 or 300 dollars if I really have to push it but I already spent so much on the GPU. Do I need to worry about the 80 plus gold or platinum stuff too? It feels like I need a degree just to turn this thing on. If someone could just tell me what they use for their 4090 and if it was easy to set up for a beginner that would be great because I am terrified of breaking this thing...