I know this thead is old (5 months) but, obviously, some of the answers are done from the ignorance or from the mere facts shown on web sites, the most accurate answer is what Mr. velocity4 and 10tacle has given to us.
Obviously, the system, bought new, could be be expensive in comparison with a brand new system if the parts are brand new (the Core 2 Quad overall, which is still prized 213€ on Amazon), but that does not mean that the system will not be able to run actual games.
On what I will agree is that the GPU will not be enough; but you can play Doom 2016 at constant 60 fps (High settings, only two parameter set to med, but I cannot remember what, 16:9 1920x1080), or Titanfall 2 at the same framerate (High settings, 16:9 1920x1080) only adding a medium-level GPU as the GTX 1050 2GB is.
I did play Doom 2016 at constant 50 fps with a GT740, obviously not in 16:9 and lowering the graphics, but it still looked great.
I am speaking form the experience. My system is an old Q9550 not overclocked (overclock scares me) with ONLY 4 GB of RAM DDR2 800Mhz, a 240 GB SSD (another 280 GB in 2 HDD) and a GTX 1050 2GB DDR5. ¿Total cost?, well, the only new things I bought are the GTX and the SSD, the rest of components costed about 70$, all second hand.
I am not saying that it will perform better than a new system, no, what I am saying is that it WILL an CAN run actual games, with some struggling with loading times because of the low-rated RAM, of course, but, believe me, those games are totally playable.
If you want to buy a sure winner, go for the new system, but remember that the Ryzen mentioned above cost more than 100$, then the MOBO and the COMPATIBLE RAM (remember this) will add other 200$, if no more;but if you want to give it a try, maybe for less than 200$ you will have a working system which can still give you many satisfactions in what a gaming experience (if you are not too much exigent) is.