PCIe 3.0 x2 limitations/penalty?

bluestang

Gawd
Joined
Dec 14, 2018
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708
Anyone remember project limitations or penalty when running a GPU on PCIe 3.0 x2 slot?

I got a MB that has 2x full size PCIE 3.0 slots, but 1 is x16 and the other is x2...just wonder what bandwidth limitations that it will make for projects like WCG OPNG, E@H, PG PPS_Sieve, MOO, Ami, etc. and runtime/PPD penalty?

TIA
 
Last edited:

motqalden

[H]ard|DCOTM x5
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Jun 22, 2009
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Wcg opn ok, amicable ok, pg ww ok not sure about the rest of pg but prob ok, e@h i think maybe not ok . Moo cant remember but i think ok.
 

bluestang

Gawd
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Dec 14, 2018
Messages
708
Thanks. I remember when some miners were have issue on some projects during the Pentathlon years ago with those on x1, but don't recall x2.
 

motqalden

[H]ard|DCOTM x5
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Jun 22, 2009
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And i will say my observations are really for x1 but i think x2 is only gonna slightly improve einstein
 

Ducrider748

Limp Gawd
Joined
Jul 25, 2011
Messages
308
Check your mother board .If both slots are being used make sure they don't go to 8x on each slot. Most mother boards do. Or it may go to a 4x slot if used. 2x works for F@H but works better at 4x, A hit on ppd is better than not making any ppd.
 

bluestang

Gawd
Joined
Dec 14, 2018
Messages
708
Check your mother board .If both slots are being used make sure they don't go to 8x on each slot. Most mother boards do. Or it may go to a 4x slot if used. 2x works for F@H but works better at 4x, A hit on ppd is better than not making any ppd.
Thanks for the info, but I did check my MB manual and that is why I posted exactly what I did in the OP.
 
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