I have been a BOINC user since 1998; started using seti@home my freshman year using an old compaq laptop with win95 on it. I now run 3 projects on my home network, seti@home, milkway@home, and Atlas@home, they run on my main pc (4930k and 32gb ram, amd r9 290) as well as an amd hexcore system that is much slower.
Ive only used it in an office environment once, at my last job when we got some new killer (at the time)hardware. Loaded up boinc/seti on dual proc dell server with 256GB ram, for 'testing' to make sure it could run at full load for periods of time. It was also fun to see how many work units it could do. My boss said 1 day was enough, so i uninstalled it.
These distributed computing tasks dont use much bandwidth, but they will run your cpu at max, and some of them eat up RAM (Atlas@home is one). There are settings to control all that.
However, running these on work systems is using company resources for personal stuff, unless your boss is huge into distributed computing and science and wants spare cpu cycles spent that way(havent met one yet that does),