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Those specs should be more than enough. I ran PCSX2 fairly well on my old rig i3 540 (first gen i3) 8 gigs ddr3 and an 750Ti. No problems in any popular games that are well optimized, struggled with some more obscure games but that was probably due to emulation rather than specs.

I use a model 5000X PS2 with an installed hard drive and FreeMCBoot so I could have faster load speeds and a bypass for the region locking.

Or I would if my PS2 didn't die after more than a decade of use. Looking to replace it.

FF9 and 10 ran fine even on my GT430 back then, it isn't really all that demanding unless you want to turn all options to max.
For $50 get the 1050, it's not really needed for PCSX2 though.

Still got a real PS2 too.

PCSX2 is very good in terms of emulation and performance, especially considering the ongoing development for it and getting better as the times goes. I don't think you can find anything better for PS2 emulation, just tweak your settings right and you won't have any issues, even on older machines.

As of the GPU I recommend at least 1050, anything lower is not worth it compared to integrated GPU.

I have a question for people that use PCSX2, does it work well with mouse and keyboard?

i used PCSX2 on my second gen i3 with a AMD 7750 half-height card without any noticable issues for the games I tried at the time. its been a year or more since I last tried, so the emulator's probably improved since then as well.

PCSX2 works great on my 1050ti, but you'll have to go through some hoops to be able to obtain copies of the games, since many of the trustworthy sites have been basically hit with cease and desists.
For the most part, it depends on the ROM. Most of what I've seen is good and runs fine, but there are a few that are just bugged where the textures are broken and you can't seem to avoid poor performance.

It depends on the game you're playing and the quality you want to play it at
Games like God of War will work fine. Others like Shadow of the Colossus...which is a beast to emulate, no so much

Go with the lowest settings and you should be fine

Depends on the game, some work flawlessly, other have some solvable issues, other are just lost causes, but yea its the emulator I use

i have a 7700k with a GTX1070, works great, played Persona 4, GT4, Shadow of the Collosus, Midnight Club 3 ICO and haunting Ground.

all of them worked no big tweaks or anything at 4k, the only game i havent got it to work properly is Stuntman.

I have a Core 2 Quad q6600 2.4ghz, 5gb RAM and R7 240 2gb. All games work fine