Neither, because those are Kaby Lake motherboards and Intel's Coffee Lake lineup has rendered them obsolete. There's hardly any situation now where the 7th Gen CPUs (e.g. i7 7700k) are the best buy.
What's your budget and full prospective spec? Can suggest something from the 8th Gen range, with motherboard options.
Yes.
The i7 7700k is obviously compatible with those 2 motherboards. As Tony says, my point is that you don't want to be buying the i7 7700k in the first place because it's obsolete - and therefore you don't want to buying either of those motherboards.
If you post your budget and full prospective spec, people can suggest a more modern and more futureproof alternative. And give some suggestions on Z370 motherboards (which is what the new CPUs require).![]()
I'm telling you you're wasting your money and buying a spec that's poor value for money.
The one that looks best is the one that you think looks best.