You need a processor that can support more PCI Express Lanes.
The following is an excerpt from Intel website for Intel g3930 cpu:
Expansion Options
Scalability 1S Only
PCI Express Revision 3.0
PCI Express Configurations Up to 1x16, 2x8, 1x8+2x4
Max # of PCI Express Lanes 16
NB. Some of these lanes will be used up by other devices e.g. SATA
Also, as in the previous comment, this is a Bitcoin forum not Altcoin!
This guy is 100% wrong. GPUs when mining only need 1x1 lane. 16 lanes is good enough for 16 cards.
I see two main problems. You want to run Windows and you have Vega cards.
Both are a nightmare to mine with. You should sell those Vegas to someone that doesnt know how terrible they are for mining.
I run a ton of these boards with Nvidia cards and have zero issues. Examples below running PiMP OS (
www.getpimp.org). (I keep the 13th slot free on all boards in case of a PCIE failure I dont have to mod the rig.)
H110 running 12x GTX 1070s:
[Agent: P44860 (Running) Total HR: [5.77Kh/s] Miners running [1] GPUs [AAAAAAAAAAAA]]
[12:54 PM][Uptime: 6d 22:39][root@pimp2(10.30.0.26)]
H110 running 6x P106 and 6x GTX 1060:
[Agent: C30080 (Running) Total HR: [3.57Kh/s] Miners running [1] GPUs [AAAAAAAAAAAA]]
[12:55 PM][Uptime: 18:05][root@pimp2(10.30.0.132)]