upgrading from 2600k to 7700 or 8700 would requires new MB and rams. $350 for cpu +$200 for MB + $200 for 32GB DDR4 = $750.... just feel like it's so expensive for a single cpu setup that's not even that fast at multithread
I don't even know how to reply to this... but I'll try.
You haven't upgraded since 2600 (year 2011), so obviously you need a new motherboard, ram, etc... and since you haven't updated to each generation you have saved a boat load of $ over the years to spend on your next system that you will keep another 7 years. (Did I really just say that? Wow...)
You are now complaining that it's not fast multi-threaded, well, no kidding it's a (low core) 4 core high frequency CPU not a 2 Processor Xeon with 20+ cores... if you need lots of threads spend money on xeons.
Come on now, this is getting ridiculous. You're comparing apples to oranges, and complaining about prices upgrading from a year 2011 system to one in (year) 2017 / nearly 2018...
I didn't even mention IPC improvements from yours to current, but they're substantial over that period...
You sound like you're never happy and complain, but maybe that's simply because you still run a 2600 based system ??? Who knows.
Good luck whatever you end up going with.