PCi-e Lanes

[Humble_newbie]

Hello,

I have a rather simple or confusing new bie question to ask,

But let me give you the specs of the pc I have right now and what I am planning to do in future.

CASE: Fractal Design define S

CPU: Intel I-5 6500

CPU cooler: Cooler Master V-8 GTS

Motherboard: Asus Z170-A

RAM: G-Skill Ripjaws 16GB (2x8GB) 3000MHZ

Storage: Samsung SSD 850EVO 256GB 2.5”

                Toshiba HDD 500GB 2.5” 5400RPM (out of my old 2012 laptop) (Just for Storage of multimedia)

PSU: 750W EVGA Platinum Series

Case Fans: Fractal Design Dynamic HP-14 PWM x 3

Display: Asus PB258Q 2650x1440p 60hz 5ms monitor x2

 

There is no graphics card right now because I am waiting for the GTX 1070

Here is the problem I am having.

According to Intel and Asus Specs,

Intel has 16 PCI-e Lanes and Asus has:

2 x PCIe 3.0/2.0 x16 (x16 or dual x8) 
1 x PCIe 3.0/2.0 x16 (max at x4 mode) *¹
3 x PCIe 3.0/2.0 x1 
1 x PCI

And for storage ASUS Z170 has

1 x SATA Express port, compatible with 2 x SATA 6.0 Gb/s ports
1 x M.2 x4 Socket 3, *², with M Key, type 2242/2260/2280/22110 storage devices support (both SATA & PCIE mode)*³
6 x SATA 6Gb/s port(s), gray
Support Raid 0, 1, 5, 10

 

So technically, If I put one GTX 1070 to this current setup, I should be able to game at 1440p 60hz reasonably, but what if I want to SLI 2x GTX 1070 in future?

Are the dedicated 16 PCI-e 3.0 lanes going to get split into 8.0 and degrade the bandwidth?

Or if I want to run 2x M.2 SSD in raid 0 + 1x GTX 1070 at the max potential? Is this possible?

We are not OC so lets just leave that out of the question.

 

I am new at this so I dont know much about the PCi-e Lanes and how they work.

What the best Raid 0 configuration with 2x GTX 1070 in this hardware? 

I cannot change the motherboard or CPU because I already bought it and have been using it.

What can we do? Whats better here?

2x M.2 SSD in raid 0 with 1 x GTX 1070?

1x M.2 SSD with 1x GTX 1070?

2x SATA 6 SSD in Raid 0 with 1x GTX 1070?

2x SATA Express SSD in Raid 0 with GTX 1070?

Or the simple 1 x SSD with SATA 6 with 1 x GTX 1070?

 

Thank you,

Sorry for this long post. thanks for reading atlease.

[DrM]

if you sli, each card gets 8 pcie lanes, which is more than enough. even current cpus cant max out 8 gen 2 pcie lanes. also m.2 ssds use the sata express lanes, which are completely seperate lanes dedicated to storage, so it wont interfere.

[another random person]

Basically, PCI-e lanes work like this: If only one graphics card is installed then the GPU will use all 16 lanes. But if a second card is installed, then each card will run on 8 lanes. 

RAID has nothing much to do with GPUs and is mainly for storage.

Any of those options in the last list would work just fine.

[unidentical]

Honestly, stick to single card and upgrade to a single ssd. 

 

SLi performance is finicky as most devs don't properly optimise for it as it's such a niche segment. Raid 0 has serious downsides, it treats the two drivers as one so yes you get more suited but less fault tolerance and if one fails you lose everything. 

 

Basically you'd be complicating your build at no small expense to either increase risk out deal with unstable and unreliable performance.

 

That's my suggestion based on my experiences sewing around with different configurations over the years.

[Humble_newbie]

Thanks for clarifying this, Because I was starting to worry if I spend aroudn 450$ in wrong hardware.

[Humble_newbie]

So what do you think the fastest setup with this mother board and CPU will be wothout OC?