About PCIe lanes

[yaseryaser]

Hey awesome community,

Soon I will custom build a PC with the following components:

i3 7100 \\(it has MAX 16 lanes of course) 

ASUS B250f Strix ROG \\ (2 M.2 slots available)

SAMSUNG 960 EVO 256 GB M.2 PCIe NVMe \\(which require 4 lanes)

8GB DDR4 2400 MHz Hyper X Fury

1050ti Nvidia GPU

PSU 400W 

NZXT H440 Case

so my question is: 

the GPU will occupy the full 16 lanes provided by the CPU so How will it manage to provide the 4 lanes required for the M.2???

or the GPU will downgrade to 8x!!! so 8x+4x=12x which will result in a loss of 4x lanes to the nothingness!

please help me to understand because it's confusing

sorry for the long explanation but I need to be clear exactly what I need.

Thanks in advance and God bless you all

[ARikozuM]

M.2 will work off the chipset that's providing PCIe 3.0 lanes. 

[yaseryaser]

2 minutes ago, ARikozuM said:

M.2 will work off the chipset that's providing PCIe 3.0 lanes. 

AHA, so it will get the lanes from the motherboard, not the CPU. GREAT thank you:D

[ARikozuM]

Here's something to read. 

 

 

[Enderman]

Also, there is literally no difference if your GPU gets 8x or 16x.

It does not use that much.

You don't "waste" lanes if your motherboard does x8 x4 configuration.