afaik it's part of the GPU, which you don't have.
Wikipedia says: Certain low-end and high-end parts (including multi-socket Xeons, and some Extreme Edition CPUs expected to be used with a dedicated GPU) do not contain the hardware core to support Quick Sync.
Because ... servers shouldn't be expected to compress video?
Because in say 8700K GPU takes around 30% of the die area. Also Quick Sync encodes in crap quality. When it comes for free with iGPU, it's OK. But I doubt you would want Quick Sync instead of a few CPU cores. Moreover, I think most people would want 8700K with 3 additional cores instead of iGPU they likely would never use.
After about a year of pain trying to settle on my daily driver desktop, I went through many iterations, in an effort to find THE ONE machine where I could do my development work, day to day business, and 4k video editing, in approximate order...
E5-2670v1 x2
I7-6800k
I7-5820k
E5-2696v2 x2
I7-6700k
Ryzen 1800X
Ryzen 1700
I7-7700k
I7-8700k
By quite a way, the best processors for 4k video editing for my workflow were the two Kaby Lakes with iGPUs. They aren’t bad dev boxes either, particularly the i7-8700k with its 6 cores.
In the end, I have ended up with two day to day machines, the dual E5-2696v2 for development and admin chores, and the i7-8700k for video editing.
The Kaby Lake i7-7700k is now in my NAS that doubles up as one of my VM servers, and occasionally I use it remotely to produce videos if the 8700k is busy.
The Skylake i7-6700k just doesn’t seem to have the right iGPU to do h264 4k encoding like the Kaby Lakes chew through on PD 16.
The main down side of the dual Xeon is the boot time, but wow do 24c/48t speed up your dev builds! Its mobo also has a uefi bios that takes months to figure out. The retail i7-8700k on the other hand boots in about 4 seconds and is the most snappy machine I have.
The Ryzens I’ve found really a little disappointing. They are slower to boot compared to their mainstream Intel counterparts, and there’s something about them that simply makes them feel not as snappy as the Intels. Like the Intel socket 2011s, there’s no iGPU in the two Ryzen 7s I use. Both Ryzen builds live in a cupboard switched off if that’s any testament.
Unlike the dual socket 2011 Xeons, the two socket 2011 i7s, 6800k & 5820k, both 6 core, turned out to be a lot of trouble. They are both power hungry which makes a really compact ITX solution pretty much impossible, plus you need an external GPU. For my work, I found no real performance benefit of an external GPU for video editing, but handy for a bit of mining. I did try an ITX build with the i7-6800k, after thinking it was THE ONE, but with just two weeks in the role, it just stopped working, it powered itself off and couldn’t switch it on. I now believe that the VRMs blew the processor as it wouldn’t work in another board I had. Trouble was, in trying to diagnose the problem, I put the 5820k into the mobo that stopped working... and I’m pretty sure it blew that up too. Now neither worked in my spare board anymore. A bloody expensive mistake.
One other thing. Beware of overclockable CPUs and the temptation to overclock! You’ll end up burning days and weeks of your life on it, when you could’ve been productive instead.
For testing, all of these machine builds were populated with at least 32GB RAM in XMP profile on Intel platforms, and used either Samsung 850 EVO SATA-3 or 950 PRO NVME drives, I couldn’t tell any difference but I didn’t time it. I did try a hybrid drive a couple of times, frankly I wouldn’t bother unless it’s all you have and are desperate, they’re very disappointing.