https://www.cnet.com/news/snapdragon-845-speed-versus-galaxy-note-8-pixel-2-xl/

The Galaxy S9 is expected to be one of the first phones in 2018 to use Qualcomm's Snapdragon 845 chipset. The chipset is the phone's brain. You can't run the operating system, connect to the internet or process photos without it. The Snapdragon 845 also comes with advanced features that will produce more colorful photos and videos, longer battery life and biometric security that guards your privacy with your fingerprint or face.

Here's the Snapdragon 845 reference device, running a graphics test.