Graphic card on second PCIE slot

ray891005

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Oct 27, 2017
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My motherboard is Asus Prime H270M-Plus, and i would like to ask can i use the second PCIE slot for graphic card. I was using the first slot for GC now, but it took up too much of places and im thinking to shift to second slot, but not sure whether it will compromise the performance or not.

One thing im not sure is, the first slot is running at PCIe 3.0/2.0 x16 (x16 mode) but second one is PCIe 3.0/2.0 x16 (max at x4 mode). what is the different if i put my GC at this slot?
 
Solution
As other suggested put graphic card in first/top slot and sound card in the other one they mentioned.

Heat dissipation won't be too much of an issue as the X16 slost are some 7-8 cm apart and the SMDs on the sound card are usually facing down from the PCB and not directly exposed to possible heat coming from the card.

Also if you have sufficient ventilation inside the case it would even less of and issue. If ventilation is not so good you should look into that as the 1080 mini can get kind of warm. under load, somewhere in the 70s C or so.
The first slot allocated 16 lanes from your system to the GPU. f you drop it down to the second slot you're allocating only 4 lanes to the GPU. There shouldn't be much of a bottleneck since you're operating on PCIe 3.0.

Mind sharing what you mean by this term:
I was using the first slot for GC now, but it took up too much of places...
?
 


Im going to plug in zotac gtx 1080 on the second slot, does it look ok ? or pls tell me if the performance will be affected.
 


The gap between the PCIE slots is not big, and gtx 1080 is quite thick will take up a lot of places, and i will have no enuf space for my soundcard, but once the card put at second slot, all these problems can be solved, so i would like to check ya.
 


currently i using zotac1050ti mini, and has a plan to change to 1080 or 1080 mini, as i know that the 1080 or 1080mini is much more thicker than 1050ti mini, so i think it would have problem for the GC to release the heat... that y i think to change the slot.
 


actually im just afraid that the heat radiating will be not that good if both cards stay too close...
 
As other suggested put graphic card in first/top slot and sound card in the other one they mentioned.

Heat dissipation won't be too much of an issue as the X16 slost are some 7-8 cm apart and the SMDs on the sound card are usually facing down from the PCB and not directly exposed to possible heat coming from the card.

Also if you have sufficient ventilation inside the case it would even less of and issue. If ventilation is not so good you should look into that as the 1080 mini can get kind of warm. under load, somewhere in the 70s C or so.
 
Solution

GPU coolers suck air upwards and expel it out the sides of the card and out the rear vent. It's not going to be blowing hot air on your sound card. Unless you have insufficient air flow and your case is filling up with hot air, in which case it wouldn't make a difference which card is in which slot.