PCI-E Lanes Used Up?

[Fahrenhe1t]

I have a ROG STRIX z270G Gaming motherboard; it's got two full-size PCI-E slots (16-8x), two 1x slots, and two m.2 slots. I have an Intel 7700K CPU installed (which has 16 PCI-E lanes).

• I recently installed two ASUS GTX 1080 Turbo cards in the extended slots (SLI mode)
  
• I have two Samsung NVMe 960 drives installed in both m.2 slots (they default to 4x)
  
• I recently got an HTC Vive wireless PCI-E 1x card
  

I'm waiting for a 1x PCI-E extender to plug in the wireless Vive card. However, I started thinking about PCI-E lanes. With all that hardware installed:

• Will I have enough lanes to run everything?
  
• What speed will the graphics cards run at? 8x and 4x?
  
• If the graphics cards run at 8x and 4x, would that slow them down?
  
• Will both m.2 cards and the wireless Vive run at 1x?
  

Thanks!

[HiVizMan]

The GPU will run at 16x and 8x depending on the work load. The motherboard/CPU will allocate priority to PCI lanes as the task demands.

As long as your new card is on a x1 lane it will not have any effect on your GPU performance.

[Fahrenhe1t]

HiVizMan wrote:
The GPU will run at 16x and 8x depending on the work load. The motherboard/CPU will allocate priority to PCI lanes as the task demands.

As long as your new card is on a x1 lane it will not have any effect on your GPU performance.

Cool thanks!