The device that surfaced on GFXBench had Android 7.0 "Samsung Edition" on board, as well as a Qualcomm Snapdragon 820 processor, 3 GB RAM, 32 GB internal storage,and a 9.7-inch multitouch display with 2,048X1,536 pixels.
http://www.notebookcheck.net/Samsung-Galaxy-Tab-S3-hits-GFXBench.194694.0.html