Sigh... what do you mean useful performance?
Even with the patches applied, the current gen systems will have more performance then the cpu's that aren't affected from intel.
Do you honestly see what kind of performance hit the NVMe's took?
Even with the performance hit they are still a lot faster then the SATA SSD's, and with the higher clock count on intel on 2 cores, it will still be faster then AMD on editing programs which arent fully multi threaded like older versions of Adobe.
The QX9770 is a 65nm die process original Core cpu.
https://ark.intel.com/products/3444...cessor-QX9770-12M-Cache-3_20-GHz-1600-MHz-FSB
The meltdown/specture says it starts at 45 / 32nm which means it starts at i7 line, where the first cpu released was the glorious Bloomfield, i7 920.
https://ark.intel.com/products/3714...rocessor-8M-Cache-2_66-GHz-4_80-GTs-Intel-QPI
Sigh.... no comment...
OP, honest advice here...
If your going to use a modern 4K editing program which is truely multi threaded, then yea, possibly a ThreadRipper system maybe your best bet, as it will most likely take the least amount of performance hit.
However if your going to use an older editing program which is more based on single threaded, like Adobe Premier, or Photoshop, or gaming, then your still better off on a Coffee Lake system as or even a x299 based system with quad channel DDR4, because of the higher core clock on 2 cores. And if your an avid overclocker, then a Coffeelake System clocked at 5ghz will still tear up ryzen 7 even with the patches installed because a 5ghz 6core coffeelake is not a machine you can laugh at unless u own it and your laughing at how simple it was to get there.