B250 chipset motherboard graphics are part of the CPU used in the board. The CPU has processor graphics.
For example:
i7-7700K
Integrated graphics:
GPU Type: Intel HD 630
Microarchitecture: Gen 9 LP
Base frequency (MHz): 350
Maximum frequency (MHz): 1150
Intel Pentium Dual-Core
Model number G4560
Integrated graphics:
GPU Type: Intel HD 610
Microarchitecture: Gen 9 LP
Base frequency (MHz): 350
Maximum frequency (MHz): 1050