These things are not that heavy, as long as your GPU has decent multi monitor support you're good, but even the low ones do these days.
So basically I don't think you need special hardware for poker, but I'm not a heavy player these days so I could be wrong.
I agree that poker doesn't take a lot of computing power but these days the sites are much bigger resource hogs than they were in the past.
WPTglobal was absolutely horrendous but has gotten much better after their recent updates.
Something to keep in mind... when asking on Cardschat you might be getting a response from someone who only plays 2 or 3 tables maximum and on only one site at a time. (or maybe 3 or 4 tables across 2 sites).
I'm in the process of putting a new computer together myself (actually purchased the parts last June and STILL have not assembled it) and went complete overkill with hopes of never having to buy another one in my life.
My current computer is getting old but it has zero LAG issues while playing a day of MTT's on it. And that would typically be something like 14 tables while on 3 sites (ie. GG, Stars,
partypoker).
Along with viewing 1 or 2 streamers on Twitch.
Listening to music from YouTube
Having Facebook/messenger open.
browsing internet
Running PokerTracker4
Adding WPTglobal to this list above bounces my CPU to 100%
As I transition from my usual (4-tabling ZOOM style cash games) over to MTT's, I need more power. I want to be able to run 5 sites with up to 20 tables running. (also want to be able to Stream on Twitch as this is something I'm considering doing in the future)
My current 'ancient' setup is:
i5-4670
16GB Ram (DDR3 1600)
GPU MSI GeForce GTX1060 6GB
1 TB Samsung SSD
3 monitors, 2x 24" Dell Ultrasharp; 1x BenQ 32" curved monitor.