Prebuilt Gaming GPU as mining system vs custom built 1-2 GPU as mining system

[Gampr]

Will something like a CybertronPC - Electrum Desktop - AMD A6-Series - 16GB Memory - 1TB Hard Drive work well for mining? I am buying a GPU and all the necessary components to build the system but am wondering if an already built system will work and produce a decent hashrate.

I know this might limit how many GPUs I could add without taking the whole thing apart and using it for parts but I was thinking this could be a good solution to cut my costs in half. Please let me know if you guys have any answers or have used this route yourselves.