Much of this stuff is more marketing hype, trying to create a big deal over tiny differences,  than reality. Really it makes little difference (within reason) what mouse or keyboard you use. Monitors are a bit more critical, but unless you're doing serious graphics work, even the modest cost ones work adequately.

Most of my work consists of SSIS, email and RDP. Not much CPU power required for any of that stuff. My boss takes it a step further, he has basically nothing installed on his laptop. Even on the road, he remotes into an equipped machine here and does everything through that window.