The Intel i3-6100 CPU we have installed is featuring the Intel®HD Graphics 530 engine. The graphics base frequency is 350 MHz, and its max.
dynamic frequency is 1.05 GHz. The engine supports 4K at 60Hz and can output 4096x2304@24Hz video from an HDMI 1.4 port.

The GPU-Z utility provides some additional info:

The Intel HD Graphics 530 supports up to 1.024GB of dynamic, shared memory, which is of course is "removed" from the system's main memory.

The PassMark 8 software provides an estimation of the chip's graphics "power". You really shouldn't expect any serious performance from an integrated GPU. It seems that HD 530 is more powerful than an Nvidia GT630 and is also a a lot faster than the Intel HD 4000:

The FutureMark 3D benchmarks returned the figures you see below - a typical performance for this category of graphics engines:

In regard to gaming, you should expect some acceptable performance (FPS) with DX9 games running at medium-quality settings and and probably up to resolutions of 1280x720p.