i7 6700K or 7700K? + Z270 Motherboards

Arkanus · Apr 17, 2017

Hello! I'm planning to upgrade my whole PC this summer and I was about to get an i7 6700K CPU... until I saw the 7700K, which came out this year.

Which one would be a wiser choice? Is the 7700K (which runs hotter... something that concerns me) worth the 10-20 extra bucks in comparison with the 6700K, specially considering I'm NOT going to overclock it?

Also, is it possible to use a "gen 6" CPU (like the 6700K) with one of those "gen 7"/z270 motherboards that have been coming out lately?

Thank you in advance for the help!

Ali Tauseef · Apr 17, 2017

Tbh there's no need to spend the extra on a 7700k, here in the benchmark you see they both are pretty much neck to neck:
[video="https://www.youtube.com/watch?v=7hR7NXTLs1k"][/video]
Also you can save a bit more on a Z170 motherboard if you haven't bought a motherboard already.

DRagor · Apr 17, 2017

You can use both 7700k and 6700k on Z270 boards.
Some 7700k get hotter, but not all. Nothing that could not be fixed with good cooling system.
If not overclocking, you *can* use cheaper motherboard, like H270 or B250.
6700 or 7700? Both are good choice.

Mike3k24 · Apr 25, 2017

If you're not going to overclock why get a K CPU?

bazzingabear · Apr 25, 2017

Mike3k24 :

The i7-7700 has a base clock speed of 3.60GHz and a turbo boost of up-to 4.20GHz without OC'ing. The i7-7700K has a base clock speed of 4.20GHz and a turbo boost of up to 4.50GHz without OC'ing. Where the non-K chip ends in turbo speed is where the K chip's base clock speed begins. For some people, this extra clock speed is worth the additional $30-40; and seems like a reasonable jump considering you're buying a $300 CPU.

@ OP: If you can afford it, go for the Z270 board, even if you're not going to OC now. You can always buy a better cooler and try your hand at OC'ing at a later point in time. If however you're absolutely sure that you'll never overclock, settle for one of the many excellent B250 boards out there instead of H270 and save $20-30 more. While you're at it, you may also wish to consider if the $30-40 spent on the K chip would be better spent on something else or not.

Mike3k24 · Apr 25, 2017

bazzingabear :

Mike3k24 :

The i7-7700 has a base clock speed of 3.60GHz and a turbo boost of up-to 4.20GHz without OC'ing. The i7-7700K has a base clock speed of 4.20GHz and a turbo boost of up to 4.50GHz without OC'ing. Where the non-K chip ends in turbo speed is where the K chip's base clock speed begins. For some people, this extra clock speed is worth the additional $30-40; and seems like a reasonable jump considering you're buying a $300 CPU.

@ OP: If you can afford it, go for the Z270 board, even if you're not going to OC now. You can always buy a better cooler and try your hand at OC'ing at a later point in time. If however you're absolutely sure that you'll never overclock, settle for one of the many excellent B250 boards out there instead of H270 and save $20-30 more. While you're at it, you may also wish to consider if the $30-40 spent on the K chip would be better spent on something else or not.

Ah I see. I don't know if it's just me but I'm content with what the 7700(non k) has to offer even at the speed its clocked at. To me it isn't really worth to jump up to the K series unless I have the intent to overclock.

GhostXXIV · May 3, 2017

I'm going through something similar right now, so I will impart my wisdom, though lengthy...

I have an Asus Z270E Strix mobo (I love it). I had bought an Nvidia GTX 1080 Founder's Edition from Best Buy and used it for a while with my i5 6400 overclocked 25% until I noticed it was a huge bottleneck. The i5 was always in 80-100% with the tasks I use it for, and when I would play Ghost Recon Wildlands, the graphics looked awesome but I would get framedrops every now and then, which I attributed to the cpu.

To answer your question, I bought a 7700k. It was released recently, so I was a bit skeptical about getting it. When I received it, I did not have any thermal paste but in comparison to using it without thermal paste, the 7700k was quickly going up and down in temperatures from 30-60c with normal web browsing and my fans were as loud as they could get on and off too because of the same reason. I have a liquid cooler, so I tested the i5 and the i5 was running steadily at around 40c without the thermal paste. I returned the 7700k and bought a 6700k. Even though the price difference is not that much, it's been around longer, and I expect it to run smoother as it is a Skylake processor. I read that there had been many defective 7700k's. I do plan to overclock it as much as possible now that I do have a good thermal paste.

If you want me to clarify anything else, let me know.

spgunnoe · May 23, 2017

Mike3k24 :

With the 7700k they have motherboards now like the Z270 MSI Gaming Pro Carbon (which isn't that expensive) that you just click one button and it overclocks it to 4.8Ghz and overclocks whatever your ram will clock to. You don't have to know anything about overclocking as long as you have descent cooler. And it doesn't have to be liquid because I have a H5 Ultimate (50-$60) and mine stays below 70C.

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i7 6700K or 7700K? + Z270 Motherboards

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