We can not avoid that PC masterrace is growing really fast since so many PC Components had been released over past 5 years. So, how are you going to measure your PC speed instead of just saying that It can run Crysis?
1) Storage
2) Graphic cards
Not only gaming like everyone understand, but also about video rendering and 3D modeling.
Should I get Quadro graphic cards for heavy video rendering?
No. Because Pascal GPU has already supported for 10 bit monitor and its has more CUDA Core than old Quadro GPU.
3) CPU clock speed
More core donsn't mean that CPU is always faster. For example, gaming use high clock speed more than core count, Adobe Premiere Pro and After Effects also.
These things can not measure your computer speed!
1) Ram Speed
In DDR4 platform, ram speed is matter when Ryzen processer came up with X370 and X399 motherboard but Kaby lake and Coffee lake on Z270 and z370 motherboard, it is different story.
2) Motherboard size
Another misconception of PC building, which is really annoying to see. Even though, Mini-ITX motherboard is for portable PC, but performance is still the same.