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#21
Exactly what CPU do you have?
Best performance = discrete graphics card.
For 4K video support, you need: 3rd Generation Intel Core Processor or higher with Intel HD Graphics and the latest Intel HD Graphics driver.
However, with a newer CPU that has Intel UHD Graphics built-in, you might be able to find a nicer experience with the correct display device.
See this as a rough example...
Intel HD Graphics Comparison - A 2018 Guide to Integrated GPUs | Laptop Mag