The PC was built over time with old parts
Main specs info:
Intel core 2 quad Q9450
Ram 8GB XMS3 1333
And most importantly for having 3 screen gaming cheaply... Graphics card: AMD HD6850
BUT
Equivalent pc can be built new very cheaply with these parts
AMD FX 4100 3.6GHZ
Same ram
HD 6850
could possibly be made for aproximately £350 1screen - 450 3screen - £550 if all 3 screens brand new maybe. (cpu,ram,gfx,hdd,case and 1 screen brand new) and another £100 for 2 screens if you go 2nd hand like i did otherwise £120 each for equivalent to my middle screen.
This cheap rig will run pCARS in latest junior build (226) on all maximum settings on 1 screen with 1920x1080 resolution or with 3 screens 4320x900 resolution all settings on high and low antialiasing (tbh the graphics are so good in pcars antialasing doesnt make a massive difference)
the fps i get both in 1 or 3 screens with this setup is 18-25 but feeling fully smooth and no jitteryness
The great thing with pCARS is even with antialiasing turned off the graphics look very smooth