Is the Apple iMac 27-Inch "Core i5" 3.4 (5K, Mid-2017) Specs capable of running Unreal 4, please?

Could any confirm if an Apple iMac 27-Inch “Core i5” 3.4 (5K, Mid-2017) Specs, with the following specs:
Video Card: Radeon Pro 570 VRAM Type: Dedicated
Details: This model has an AMD Radeon Pro 570 graphics processor with 4 GB of dedicated VRAM (with up to 64GB if necessary) be powerful enough to run Unreal 4, please? If a later model of the 27" iMac is needed please let me know?
Many thanks, Ray Brady