Demonic Heart :
1337acab :
If u dont care about the extra cash for the 8700 I say go for it!
the 8700 is cheaper than the 7700k
That's probably very dependent on the vendor & your county of origin. PCPartPicker, for example, is listing the cheapest prices for
both chips as $320 USD (https://pcpartpicker.com/products/cpu/#s=13&f=85,75&sort=price&page=1). However, that's only the price of the CPU. PCPartPicker lists the cheapest ATX Z270 board (a necessity for the 7700K to overclock) at $89 USD. The cheapest ATX Z370 board, OTOH, is $112 USD (https://pcpartpicker.com/products/motherboard/#s=30&c=119,128&sort=price&f=2). Now, granted, you don't need a Z-series board for a locked CPU like the 8700..but right now that's the
only option. So, given all other components being equal, minimum price is $409 USD for a 7700K build vs. $432 USD for a 8700 build.
The other issue, of course, becomes availability. That same page on PCPartPicker, for example, lists 8 separate vendors for the 7700K, but only 2 of them (newegg & B&H Photo & Video) show the 8700 in stock. If you can't even buy the 8700, then unless you can afford to wait there's not much point in selecting it.
Roland Of Gilead :
Depends on your needs. If it's pure FPS in games, then a moderate OC on the 7700k brings it close enough to an 8700k.
With that said, I'd agree with 1337acab. If I were making the choice, I'd be taking the 8700. It's not OC'able like the 7700k/8700k, but still a massively capable chip, 6c/12t and it's 6 core boosts is 4.3ghz (i think). It is superior than the 7700k in nearly everything except gaming. And even then the 7700k doesn't have that much of an advantage.
Correct, the maximum Turbo for 4, 5, or all 6 cores with the 8700 is 4.3GHz. Which isn't really much more than the maximum Turbo for the 7700K (4.2GHz with 4 cores). I strongly suspect that, not just in gaming but in other applications, that difference is going to end up being very minor.
Granted, it wouldn't be a dead-end system like the 7700K, & you would be able to drop in an unlocked 8700K at a later date -- & you
might be able to upgrade to a Cannonlake CPU next year (although, given how little performance gains there have been each generation, chances are you won't see much,if any, improvement by that point).
I guess the big questions to the OP are 1) what is your current system, & 2) what part of its performance isn't up to the challenge anymore that can
only be fixed by a CPU/platform upgrade (as opposed to a GPU upgrade, switch to a SSD, etc.)?