Honestly, I wouldnt stress too much if you stick to Tier A units. Based on transient response and ripple suppression data, the Corsair RM750e 750W 80 Plus Gold Fully Modular is a beast for under $100. Another great option is the Thermaltake Toughpower GF1 750W 80 Plus Gold which features high-quality Japanese capacitors. Both have tight voltage regulation and will keep that 3060 safe.

I'm super paranoid about frying parts too so I get the fear. Quick question tho, what case are you using? Size matters for fitting cables. Tbh I'd look at the EVGA SuperNova 650 G6 80 Plus Gold Fully Modular because it is compact and really safe, though it can get a bit loud. Or the MSI MPG A650GF 650W 80 Plus Gold Fully Modular which is very stable for high-end GPUs, but the cables are kinda stiff.

Tbh I spent way too much time worrying about this same thing on my last build. I ended up grabbing the SeaSonic Focus GX-750 750W 80 Plus Gold Fully Modular because of their 10-year warranty. It was like $98 on Amazon. My old rig actually died from a cheap unit surge, so I dont take chances anymore. It handles a 3060 easily and stays dead silent under load.

Building on the earlier suggestion, I definitely get the paranoia about frying parts. I remember being so stressed during my second build that I almost bought a massive overkill unit for a mid-range card just to be safe. Tbh I have always been kinda torn between the big legacy brands and the newer companies that are trying to make a name for themselves with better pricing. I think I remember reading somewhere that certain brands use the same internal platforms but charge totally different prices just for the logo on the side. Like, I think some of the units people already mentioned might actually be made by the same factory in China or Taiwan. I would be careful though, because I have heard some brands started cutting corners on their cables lately. Some of them are so stiff it feels like you are gonna snap the motherboard header just trying to plug it in. Not sure if that is still a thing but I definitely ran into it with a top tier brand a few years back... basically made cable management a nightmare. IIRC, some of the newer budget units from the big names are actually better than their old flagships now anyway because the tech moved so fast.

Hey, just saw this thread and wanted to jump in. Before I give a full list of recommendations, what CPU are you planning to pair with that 3060? Knowing the total estimated wattage helps because PSUs are most efficient at about 50 percent load, and I want to see if 650W is actually your sweet spot. You definitely want to look for units with full bridge LLC resonant converters and DC-to-DC topology. This basically ensures that your 3.3V and 5V rails are derived from the 12V rail, which keeps everything way more stable than old group-regulated units that can spike voltages. If you can find it, the ADATA XPG Core Reactor 750W 80 Plus Gold Fully Modular is a sleeper pick. It uses all Japanese caps and has excellent transient response. The MSI MPG A650GF 650W 80 Plus Gold Fully Modular is another great one usually under 100 bucks that uses a very solid multi-rail design for extra safety. Let me know your full specs tho!