Re: PCIE slots for GPUs
2016/10/21 10:01:20
(permalink)
Viking4k
Can I get slots 2 & 3 to run at 8x ... 1&2 seem to close and causes interference on a EVGA 1070 SC fan
PCIE 0, 1, 2 all draw lanes from the CPU; your CPU will have a maximum of 16 lanes to give.
EVGA refers to them as PE1, PE2, PE3. If ONLY PE1 is populated, it will run at 16x. If PE2 is populated, PE1 becomes 8X and PE2 becomes 8X. If PE3 is populated, it will ONLY run at 4X regardless of if PE2 or PE1 is populated. You can look at the back of the mobo to see the number of pins dedicated to that slot lane.
There should be no problem using your two GPUs right next to each other in PE1 and PE2. If you are concerned about heat, consider adding some more intake fans to your case.
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GPU: STRIX 1080 OC
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