Can I use the second PCIe-Slot of my Motherboard for my Graphics Card?

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Cookies4sure

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Apr 24, 2017
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Hello,

can I use the second PCIe-Slot of my Motherboard for my Graphics Card instead of using the first one? Will I loose performance, or do they run at the same speed, if the first is not occupied? I am really confused, because the manual says that the second slot runs on 8 lanes, but than says it shares bandwith with the first, so from my understanding the second should run at 16 lanes if the first is not occupied, but I could be wrong.
My motherboard is a Aorus X370 Gaming 5.

Thanks for helping me out..
 
Solution
Dunlop0078
From what I can tell if you were to put a gpu in the second slot it will run at pcie 3.0 x8, which likely wouldn't reduce performance much if at all versus pcie 3.0 x16. However I would still use the top slot unless you have a good reason not to. Is your cooler in the way or something?
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Dunlop0078

Dunlop0078

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From what I can tell if you were to put a gpu in the second slot it will run at pcie 3.0 x8, which likely wouldn't reduce performance much if at all versus pcie 3.0 x16. However I would still use the top slot unless you have a good reason not to. Is your cooler in the way or something?
 
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Solution
Dunlop0078

Dunlop0078

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Use the top slot. By using the second slot you will have less bandwidth and more latency since the cpu is farther away from the gpu. I would not recommend somebody use a lesser interface because it looks better.
 
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