Intel HD Graphics Mobile (Haswell) are integrated graphics in the budget Celeron and Pentium Haswell Mobile processors.
Their performance depends on the processor they are integrated on, as the latter defines the Base and Boost Clock, as well as on the SYSTEM RAM, which defines the operating memory clock, and whether the GPU accesses a 64-bit or 128-bit memory interface.
Best case scenario, the Intel HD Graphics Mobile (Haswell) perform slightly above Intel HD 3000 Graphics and so most modern demanding games will have to be played with the lowest settings, while some aren't even playable.