Earlier quoted context omitted.
Looking at that, you can only get workstation graphics, which is something he did not want since he does occasionally play games.
Low spec the graphics card and replace just that one component. You'd still get a more RAM support (and ECC at that), heavy workload CPU support, and most importantly a motherboard designed to shove that much data back and forth between the CPU, RAM and other devices. What I realised with my gaming builds before is that the weakest link was just shifting the data around. The CPU was seldom maxed out, the RAM seldom s…
As for picking all the perfect components that work together, there are myriad of people and places online crowdsourcing and benchmarking the perfect configurations. I doubt Dell is putting much thought and testing into their configs beyond reliability and cost.