Aurora-R5, upgrade CPU, non K to K

no one knows?

You should be able to, but you cannot use the eighth generation on your motherboard.  The cooler is available for $100, but the larger power supply is recommended also.  Consult tech support.

The Dell 850w will run a GTX-1070 or a GTX-1080, no problem.

The Aurora-R5 with Intel i7-6700 is fine the way it is. It's not like you have an i5. The i7-6700K is basically the same chip. Real-world benefits of Over-Clocking are minimal. 

The motherboard that shipped with the i7-6700K is slightly different. It has the VRM-heat-sink installed, and might even have a different BIOS micro-code to allow that chip to work. See old forum posts about all the users trying processor swaps (with mixed results). 

I do suggest you install the Alienware (Asetek-made) Liquid-Cooler. Not sure why they allow you to buy an Intel-i7 config without it.

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@molismenos wrote:
1. I was thinking to update to i7 7700k so
2. I would have a difference...
3. Can I upgrade to that? Or just 6700k?

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1. Pretty sure Alienware formally announced they were NOT supporting that. Search forum.

2. Even then, real-world difference it very small

3. I guess I didn't make myself clear. I think the real answer is NEITHER.

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@molismenos wrote:
Ooo good...So I payed so much dollars and I can’t even swap to 6700k and have a stable system with over clock at about 4.7ghz...thank you very much so I stay like that and not even change to 6700k right?

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I already answered that (the best I can).

Maybe you should search old "Alienware General" forum and come to your own conclusions?

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@molismenos wrote:
Thank you for your help and your time, I will just take a GTX 1080 Ti and a cpu cooler and I think I will be ok, maybe put a 16gb ram+ to mine.

Thanks for your time.

P.s tell me your opinion about that
https://www.amazon.com/gp/aw/d/B079T6BC3M/ref=mp_s_a_1_3?ie=UTF8&qid=1520308147&sr=8-3&pi=AC_SX236_SY340_QL65&keywords=alienware+liquid+cooling&dpPl=1&dpID=4117m4b84UL&ref=plSrch

Take that or the order you told me before Asetek version?

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AFAIK, all Alienware Intel-processor Liquid-Coolers are made by Asetek. Always have been all these years.

That looks about right, but you should probably come-up with the Dell Part Number (DPN) for the one you really need. Dell Parts should have them (you would think).

If you look closely, that one is USED. A new one would be better.

Changing processors is a matter of whether you want to play the edge a little for a 6-12% increase in speed.  Silicon Lottery and others sell Intels which are selected for higher speed, have their internal conductive paste replaced for better cooling, then stress tested.  Re-lids lose their Intel warranty, but SL gives 1 year.  They sell 7700K's rated 5.0 and 5.1 GHz.  The Alienwares w/liquid coolers may handle this OK, but the motherboards are not premium O/C designs, and may not quite support SL's rating.  I am using an SL 5.2 rated 8700K in this R7 at 5.1 with good temp and stability, a notch down.  BUT the temps are the same as my original chip at 4.6, so I am happy.  SL will also re-lid your chip (about $45-55), or you can DIY.

I don't know who offers binned (selected) and re-lidded 6700K's.   But the 7700 series should work on your MB.  A 5.1GHz-binned, re-lidded 7700K would offer a real kick in the pants when run at 5.0, and run at reasonable temperatures (82 deg C or less) under heavy load, with good cooling.  SL only charges $10 more for the 5.1, so I wouldn't bother with the 5.0.  The Alienware AIO (liquid cooler) and case fans should be enough for game use, but long-time heavy use requires a bigger case and more fans, two or three with the AIO, and two or three on the case.  Overclocking the faster graphics cards can also generate a lot of heat. 

The cpus don't come overclocked, rather are more or less overclockable.  You have to use a utility like Intel's XTU to do it.  Overclockers.net is a good research site and there are a lot of o/c guides on the net.

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@molismenos wrote:
or the order you told me before Asetek version?

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Here you go ... a new one from Dell:

http://www.dell.com/en-us/shop/aurora-liquid-cooling-kit/apd/412-aajj/pc-accessories#polaris-pd

Some people said they also got the motherboard's VRM Heatsink. Other's say they just got the cooler. I would take it either way. If you order it, let us know what you got in this "cooling kit".

I know nothing about this particular item, but a Forum Member found it, so I thought I would pass on this info to you.

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And there it is, J46J2, hardest part in the Dell Catalog to purchase:

https://www.ebay.com/itm/J46J2-Genuine-Dell-Alienware-Aurora-R5-R6-GPU-CPU-95W-Aluminum-Heatsink-Module/132532376035?epid=4016297157&hash=item1edb8b91e3:g:KYkAAOSwvP9aorIE

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