[SOLVED] What should I prioritize upgrading next? (10 year old build)

[Kero Kero Cola]

I had help building my system around a decade ago and I'm pretty far from an expert on hardware (though I've brushed up a bit on GPUs at least in the last few days). My old GPU finally died and, after some research, I'm planning to get an RX 570 or RX 580 to replace it. Assuming I do, where should I be looking next? Considering everything else in the build is about 10 years old I'm sure there is a lot of room for upgrades, I just don't have a large budget to upgrade it all at once. I'm leaning toward getting an SSD next, but I could easily be missing an even more glaring issue.

My current budget after getting a GPU is only around $100 but I'm mostly asking so I can be looking for deals moving forward.
Primary use is for gaming.

CPU: Core i5-2500k
Mboard: ASUS P8P67 PRO Rev 3.0
RAM: 8GB (Corsair Vengeance 2x4MB)
PSU: Corsair GS800
HD: Western Digital 1TB

There are other things I'd like to replace like my mouse/keyboard and extra chassis fans but I would first like to make sure my new GPU is able to "run free" .

 

[Lutfij]

I doubt that PSU will hold up with any more upgrades. You will need to change to a more reliable unit, made by Seasonic that has at least 650W of power at the entire system's disposal. Given the age of the platform, I'm seeing you part ways with it and land on a concurrent platform(liekt he Ryzen 2nd gen or 3rd gen platform).

 

[PC Tailor]

I'll be honest, if it is a 10 year old tier 4 (ish) PSU, I'd be looking to upgrade that first.
After that, SSD is always a great performance boost.
Going to 16GB RAM will help in modern gaming applications if needed.
But the generation is very old now, it still does well, but it's beginning to show its age, especially when newer generations can be much more affordable.

 

[SchizTech]

You're a little boxed in there as there are few major upgrade paths with that hardware that don't entail a larger rebuild. A newer generation of CPU would require a new board and memory, for instance

 

[NightHawkRMX]

Your 2500k will handle a 570 or 580 decently in most games, however the 4 threads of your CPU are a limit in a lot of modern games, so I'd consider an upgrade to an I7.

I would upgrade to a 570, then buy an SSD, and then upgrade to a 2600k or something.

 

[Fix_that_Glitch]

https://www.gpucheck.com/gpu/amd-radeon-rx-580/intel-core-i5-2500k-3-30ghz/high#mainads This will give you a basic expectation of what your i5 and RX580 would run at. I would either add 8 gb ram or replace your 8gb and get the fastest ddr3 ram to help your system along.

 

[Kero Kero Cola]

Thanks for the replys! PSUs honestly weren't really on my radar and sound like something I should look into sooner rather than later. I think I may also sneak in an SSD upgrade before saving up for the big (or more likely moderate) CPU/Motherboard upgrade.