[quotemsg=17226194,0,59464]I just had a discussion with my little sister about the same topic as she is trying to build a 1080p gaming rig for under $800.[/quotemsg]
You can easily do a 1440p rig for $800, if you're only worried about gaming. A reasonable 1080p machine can be done for $600 as long as med-high details are okay. $700 will get you ultra details.
[quotemsg=17226232,0,388413]That's a good idea. A "Tools of the trade" build. Maybe purpose build rigs, one for video editing/rendering, 3d rendering, CAD, Adobe suite etc. Maybe add a Mac into the testing as that is one of staples of people in these industries.[/quotemsg]
A Mac runs off mostly the same hardware as a Windows machine, but the software and OS are different, which renders direct bench comparisons dubious. Most people who work on Macs today do so out of tradition or company policy, not because it's the only platform available for their workload.