What's faster than a 2600k?
A 2700k.
There's a certain price to performance point you have to hit versus what you already have in order to make an upgrade worthwhile. Let me explain.
I have an i7-4790k, which is a decent chip. If I were to spend 329 + board on a Ryzen 7 2700X, the performance increase I would get wouldn't be worth the money I put in. I could of course sell my old gear, but it still may not be worth it. I also wouldn't get any improvement in my use cases as my i7 is perfect for what I am doing right now.
If serious cheap CPU performance is needed (and your tasks are multithreaded friendly) I suggest going on eBay and finding the biggest and cheapest server you can find.
As for what people are telling you, if you're unhappy with what we are saying, stop asking. This is the second post you've made on this topic, and it's the second time I will tell you, the only potential improvement you can make is graphical for the money. SSD would also go well too.
If you want it to seem like you have a new computer, get a newer, nicer case, throw a new copy of Windows on it, get an SSD. Your CPU is seriously the strongest part of your machine, and changing it for something else would be foolish.
If your board supports more RAM, get it.
If, after all this, you can't manage to keep your i7-2600k, I suggest something Ryzen. Halcyon might try to beat Intel into you, but Ryzen is truly a workstation performance darling, with great gaming performance to boot (which isn't CPU dependent anyways). The Zen+ series of chips are doing really well right now, and depending on your budget, one of them would be a great idea.
There are also more maverick things, like the server idea I stated, or just buying a load of Sandy Bridge Xeons and throwing them in a box, but for new gear, Ryzen is the current contender. They have tons of PCIe, cheap boards, great performance, less bullshit locked down stuff like what Intel does.
CPU's, how deep's your pocket ?
That's another thing. You give us no idea what sort of money you have. We don't know if you have 2000 dollars or 200 dollars, so all we can do is give you generic advice you don't like anyways. If you're going to be vague about it, go bother the people at LTT's forums.