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I am not from Laminar Research; just a flight simmer from downunder.
Unless you have a specific purpose for an i9 processor ie an editing business etc other than for X-Plane don't waste your money. Listen well in the links provided below for what the i9-9900k is really good for - not X-Plane.
I understand the i9 processor has more than 4 cores. X-Plane only utilises 4 cores so to go to an i9 will give you no extra benefit. Have a loook at the following link found at https://www.youtube.com/watch?v=OWVngv3iAvY from Michael Brown of XForcePC. Michael has a business that specialises in building PCs predominantly for X-Plane. Laminar Research recommends this business as the only supplier of PCs suitable for X-Plane within the USA. Have a look at the comments below the video. Michael aplogises for marking the 9900k as an i7 and not as an i9 CPU
Have a look at the following link from Michael found at https://www.youtube.com/watch?v=GYQOAuC1sp0
Also have a look at the following link as well found at https://www.youtube.com/watch?v=Nt4Q7eqtrNA
Good luck in making a choice on using the i9. I have the i7-8700K.
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