High number of system interrupts when adding 7th card

[whitrzac]

I have a few 7 card AMD rigs that have been mostly trouble free.
 
I'm currently setting up a 7 card Nvidia rig with 7 1050ti. I'm useing a different board than my AMD rigs, but it shouldn't have an issue with 7 cards(MSI z170 Xpower)

Running 6 cards is 100% stable. When I add the 7th I get ~30% load on the CPU from "system interrupts" and another ~30% from just "system" Hash rate is all over the place, and it usually hard locks after a 30min-hour.

It's not a riser issue as far as I can tell. It's not dependant on which card is #7, just that there's 7.
All the usual 4g, pcie gen1, disable unused crap, has been done or tried.

Fresh install of win10 pro on a sata SSD.


Any advice? Has anyone gotten 7/8 cards to work on the z170 Xpower boards?


System spec:
msi z170a xpower
g4400
patriot 4gb ddr4 2133(passes memtest)
7x evga 1050ti ssc
evga 850bq(7 cards draws a max of 600w from the wall)
current nvidia driver
win10 pro 64bit(fall update)
msi afterburner 4.4.2(also tried 4.3.0)

[xxcsu]

please provide full system specification , including what is your PSU power rating system emory , what driver are you using .

[whitrzac]

please provide full system specification , including what is your PSU power rating system emory , what driver are you using .

updated first post

[GeePeeU]

I don't run 7 card systems, Nor do I have that mobo.

But I found a article you might find resourceful regarding your problem.

https://forum.ethereum.org/discussion/11404/msi-z170-7-gpu-bios-setting-step-by-step


-Gooluck, and hashy new year !

[whitrzac]

Bump