I’m a bit confused on your question as the difference between the i9-9900F and the i9-9900KF is the lack of the Intels UHD Graphics 630 integrated graphics engine. Basically, the F part is a binned chip with the GPU logic disabled.
The discreet GPU is still present as its a separate chip on the logic board, either a AMD Radeon Pro 575X or AMD Radeon Pro 580X graphics processor.
Apple still leverages the integrated graphics when running certain functions so it’s wise to use what they used. Besides the last time I looked the pricing was like $50 difference! Why chance it?
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