Need help with PCIE Lanes

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DayQuil_Man

DayQuil_Man

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Aug 26, 2015
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Hey guys, I have a question.
So I'm planning on a build this summer and ran into something that I need help with.

I'm planning on running an i7 6700k, asus maximus 8 hero, gtx 1080 or 1070, ASUS Wi-Fi PCI Express Adapter, and an m.2 ssd.

Since the 6700k allows a max of 16 PCIE lanes, will that be enough for what i want to run?
Since the gpu takes up x16 and the m.2 takes up x4 and the WiFi adapter takes x1, will it cause my hardware to not perform efficiently? And also if later in the future i want to run dual gpu's?

Thanks
 
Solution
Rogue Leader
Its not as simple as that which is good news for you. The CPU supports 16 PCIe lanes however the Z170 chipset supports an additional 20 PCIe lanes. The 16 lanes go from your GPU to the CPU, the other devices use the system bus PCIe lanes. Nothing to worry about.

Going forward keep in mind the boards integrated devices use some of those lanes as well. If you get a second GPU either it will run some lanes to it, or both will run in x8. There is a minimal performance difference between x16 and x8 (like 1%).
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Rogue Leader

Rogue Leader

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Its not as simple as that which is good news for you. The CPU supports 16 PCIe lanes however the Z170 chipset supports an additional 20 PCIe lanes. The 16 lanes go from your GPU to the CPU, the other devices use the system bus PCIe lanes. Nothing to worry about.

Going forward keep in mind the boards integrated devices use some of those lanes as well. If you get a second GPU either it will run some lanes to it, or both will run in x8. There is a minimal performance difference between x16 and x8 (like 1%).
 
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Solution
DayQuil_Man

DayQuil_Man

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Aug 26, 2015
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So the gpu's will run off the cpu's x16 and the m.2 and the asus wifi will run off the z170 x20 lanes?
Just to make sure that I got it.
 
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