A user on NeoGaf came across a fan-released Unreal Engine 4 demo “Elemental” which can be used for Benchmarking.
Epic had released an Unreal Engine 4 demo called “Elemental” on the PC and Playstation 4, though the latter had Global Illumination removed from the game.
Unreal Engine 4’s license holders received the demo as part of the package and have been busy tinkering with it, now they have packaged the demo into a stand-alone demo for all to use.
The link to the demo can be found at the end of the article, since this isn’t an official benchmark and has been compiled by users who are still new to the Engine, optimization issues may exist in the demo.
Based on the User’s results, the Demo gave an average of 47 frames per second (Minimum 25 fps and Maximum: 61 fps) on a Core i5 4.5ghz, 8gb DDR3 ram and a factory overclocked Nvidia GTX 770 (4GB).
The user also posted 2 additional Unreal Engine 4 demos which, compared to Elemental, allow the user to control the camera.
You can follow the NeoGAF thread to join the discussion and discuss issues you are experiencing when running the demo to benchmark your hardware.