Help choosing i7-6700k mobo

[Tension7821]

I am looking for a motherboard with the following specs:
Z170 series to pair with an i7-6700k
A minimum of 2 m.2 slots that will run 2 Samsung sm961 nvme
Enough pcie slots / raid that I won't Sacrafice any speed if I were to run two 1070's in sli as well as the mentioned m.2's
Fast RAM compatibility

How I am going about the build:

Initially setting up win10 on a single 256gb m.2, (and later buying an additional m.2 with larger capacity) and hoping to get it running with the onboard graphics until I can make up my mind whether to get a 1070 or 1080. I am on a budget, but would rather build my way up with the parts I prefer, and wait on the graphic card, than compromise on anything. To explain the rush to get it running on the bare minimum, my current desktop is on its way out and I need something quick to do light browsing and school work. I do not mind waiting on the graphic card.

My main concern is finding a motherboard that suits my needs. I have seen a few models with multiple u.2 slots. Would I require an adapter to run a sm961 on these type of boards:
ASRock Z170 OC
ASRock Fatal1ty Z170 Professional Gaming
ASRock Z170 Extreme7

Or should I stick to something similar to:
Gigabyte GA-Z170X-Gaming 6 G1
Gigabyte G1 Z170A Gaming 7
MSI Z170A Gaming M7

Any help or suggestions would be very much appreciated.

 

[timeconsumer]

On the Z170 chipset there are 26 HSIO PCIE3 lanes available from the motherboard to the various I/O devices that are 100% separate from the 16 PCI-E lanes that the CPU (6700k) has for graphics. So you will never have to worry about sacrificing graphics lanes for I/O. If you go SLI you will scale down from a single x16 to x8/x8 on Z170.

The 26 HSIO lanes from the chipset are all allocated differently according to the MB manufacturer. Some to USB 3, some to SATA 6gb, some to Sata Express, some to m.2....you get the idea. For example on the Asrock Z170 OC it has 3 m.2 sockets that each have 4 PCI-E lanes available to them. When one of those slots is populated it pulls the PCIe lanes from 2 SATA ports and 1 SATA Express port. So if you populate 2 m.2 slots you lose 4 Sata 6gb ports and 2 Sata Express ports.

 

[Tension7821]

So disregarding the x16 situation, if I wanted a total of 2 m.2 nvme and 1 3.5" 7200rpm hd running stimultaneously, which board would have the available specs?

 

[timeconsumer]

Honestly it's really difficult to tell without downloading the motherboard manual for all of them. You're looking for a board with 2x m.2 socket type 3. Some of them display in the specs on Newegg that they have them and that's it, no details about how lanes are split. Some give really detailed information like in the case of the Asrock Z170 OC as to what they share lanes with.

Take a look at the MSI stats on Newegg for example and it states:

* * M.2, SATA and SATAe ports maximum support 1x M.2_PCIe + 6x SATAs or 1x M.2_SATA + 1x M.2_PCIe + 4x SATAs. Please refer to M.2 slots with examples of various combination possibilities

Leading us to believe that it will only support 1x m.2 nvme and 1x m.2 sata.

So unfortunately I cannot give you a well-defined answer other than to read the manuals for the ones in question.

 

[L0stChild]

i have the G7..
i could be wrong but i remember reading about the m.2 and if u use both slots u cant run sli because m.2 will be using the bandwidth.
i highly suggest u ask a technician. thats a hell of an investment u got prepped up lol


as for otherboards.. i recall seeing a board that has 3 m.2 slots so theres that..