Good point. Though personally I prefer running EndeavourOS, I like having an up-to-date kernel and mesa improvements. With regard to the 7600 vs 5050, I was recommending the 7600 because of the recent improvements for VRAM prioritization on 8GB GPUs on Linux.

Avoid any random generic Chinese named stuff. Go with legit brands like Thermaltake, Corsair, Cooler Master, EVGA, Seagate, and so on, and if budget allows, get one that's at least Bronze rated (Silver or Gold is better, but not necessary). If budget doesn't allow, white certified is fine, but don't cheap out near capacity.

Use a PSU calculator for the parts you're selecting. Power supplies are rated to always provide consistent load of at least 80% of rated spec if they're rated at least white certified (better for Bronze, Silver, and Gold), so aim for a PSU with at least 20% overhead. So if the system uses 600w peak, you'll want a 720w PSU or better.

In general, an 800w PSU is generally more than enough for most systems, unless you're buying really power hungry parts (think Nvidia 5080 or 5090 and the highest end Intel chips or AMD threadrippers).

If in doubt, just buy a bigger PSU than you need, like 1000w. Always better to have more than you need, it only uses what the system requires, it's not like it's always actually going to draw that 1kw power.

i suck at picking parts and never know if they'll fit my build

Just use pcpartpicker.com

It's very good at telling you if parts aren't compatible.

Thermaltake makes good stuff.

Just my $0.02, but my DDR4 system with a 9070XT is doing alright. But I also don't play competitive FPS, so ymmv

I couldn't squeeze in the 9060 XT (specifically the 16 GB variant) for under $1k, though if you went with the used parts I mentioned and the cheaper case it should fit the budget. I'm impressed with what you can still do for around $1k today, it's really just the RAM and SSD prices that hurt the build.

I'd actually be fine with the build I posted, only main difference with mine now is I have a RX 9070 GPU and 32 GB RAM, but I don't play much that takes advantage of it. I mostly just play indies and retro emulation on my Steam Deck, and only use the rig for the few more intensive games, and for co-op gaming with my wife.

This is a fair point, although you're making an assumption. How has steam's support been for their hardware thus far?

i promise i'm not sealioning, i've never had to deal with their customer support in over a decade. Which is the epitome of the IT paradox, so like, I'm inclined to think it's good.