Bartovguy wrote:I work mainly with 4k H.265 10bit 422 files and I think I could really benefit from Quicksync.
Any Intel CPU with QuickSync version 7 or later supports H.265 10-bit 422. So for desktop that's 11th gen CPUs or later, provided you get a version with an internal GPU. For QuickSync to work, the iGPU has to be enabled in the BIOS (but don't select it as a GPU in Resolve).
Since you have a 9th generation CPU with the LGA1151 socket today, you'll need a new motherboard.
If all you need is modern QuickSync and your existing case/motherboard has room, you could add any cheap Intel Arc GPU instead in addition to your 4090 and use it just for QuickSync.