I’m testing a newly built rig and I’m having some issues.
System specs :
Gigabyte Z270 Gaming K3 motherboard (flashed with latest BIOS + audio disabled in BIOS)
Intel Celeron G3920 cpu
2x8GB Kingston HyperX DDR4 memory
Intel 120GB SSD
5x Gigabyte Windforce 1080 graphic cards
5x MintCell PCI-E 16x to 1x Powered Riser Adapter Cards
Corsair HX1200 PSU
Windows 10 Home
Latest NVIDIA drivers installed
When I run my EWBF’s CUDA Zcash miner batch file with only 2 graphic cards connected, everything runs smoothly.
miner --server zen.suprnova.cc --user x.x --pass x --port 3618
I’m getting around 500 Sol/s on each card, without overclocking.
After adding the 3rd graphic card I’m getting inconsistant Sol/s everytime I run the batch file.
On most of the tests 2 cards wil have around 500 Sol/s, but the 3rd card will have different results in a range between 100 and 500 Sol/s.
After adding the 4th and 5th card, they have the same behaviour as the 3rd card.
And after 5-10 mins all Sol/s go to 0 or Windows freezes.
The cards and risers are fine, because they all performed well when I tested them in a 2 card setup.
Also when I mine DGB coins with cc miner, all 5 cards getting more or less the same hashrate.
But then after 10 mins the system hangs.
I suspect Windows 10 is the culprit, but am a bit hesitant to using Linux since I’m not familiar with that OS.
Any help is greatly appreciated !