Based on intel 3rd generation up can handle 4k videos, but if i will go for 4th gen.
intel site...
Does my processor support 4k video?
For 4k video support you need a 3rd Generation Intel® Core™ Family Processor or higher with Intel® HD Graphics and the latest Intel® HD Graphics driver. In addition you need you will need a high-speed HDMI cable. Standard-speed HDMI cables will not support 4K. Pentium and Celeron family processors do not support 4k video.