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At least build workstations or servers… Being interested in gaming builds shows where your experience level is, the extent of what you have seen in the world to be able to think that is cool. At least with workstation builds can say, “IntelliJ was able to index WordPress codebase in just 30 seconds!” or “Zend hydrator could chug through PostgreSQL JSON output of 10K rows in 500ms!”, “GCC could compile in 10 minutes”. At least I can use that as benchmarks to decide what to get next for my work. And to reiterate, whether you think Witcher 3 FPS or IntelliJ codebase indexing speed is cool tells me a lot where you sit on competency level.
Maybe throw in networking in the mix. Build off of most resilient spanning tree network, or something switching/routing related. How fast can you spin up a PostgreSQL virtual machine or container from SAN archive for development integration tests.
Clearly, a newbie to build offs, the point isn’t either Work or Gaming it is to be the most creative while cost efficient, hell if I want to drop 20K I could have the best of both worlds, as for experience level I judge that on my bank account, I can code PhP 60 hours a week earn 100K per year or I can hire 3 PhP noobs to code and still make 100K a year except, from the lake with a glass of wine. your interest does not show your experience it shows you have time for many interest, instead of only being focused on making your boss rich.