>4 GTX 1070 Windows 10

[moonpigman]

Hi,

Anyone been able to get 5 or 6 GTX 1070s to detect under windows?
I've successfully got rigs with 6+ AMD GPUs but can't seem to get the NVIDIA cards to the same.

Currently setup is:
-G3950 celeron
-8GB DDR4
-60GB SSD
-4xMSI ARMOUR 8GB GTX 1070
-MSI Z270-A PRO MB
-EVGA GQ 1000W Gold+ PSU

As far as I know (correct if wrong), a 5th GPU should run on 1000W? I know 6 won't and next week I'll be dual running two x 750W PSUs to handle it but for test purposes I believe 5 1070s should run in 1000W at stock settings.

I have tried enabling 4G in BIOS, PCI Gen 1 in BIOS
Cannot seem to get the card to even show in device manager in Windows.

Tried swapping Risers to new ones, power cables etc.  How can I determine if this is a PSU issue vs other issue?

EDIT:
We tried a few more risers and cables and now it shows up so I think it was a dodgy couple risers.  4G Enabled and PCI Gen 1 on MSI mobo all 5 display in DevMgr and mine now

Cheers

[Epicit]

I had kind of the same issue. 2 1080's 2 1050ti tried to add a 970 it just wouldn't keep it. I saw it randomly in device manger. This was with a 1000w and an 850 tried everything power wise no luck yet.

[fcaldas]

4g decoding activated and virtual memory increased to 16gb minimum, yeah?

[Bothebu]

-MSI Z270-A PRO MB

I'm running 6 cards (MSI GTX 1070 Gaming X 8G) on the same motherboard on Windows 10.  Solo mining ETH.  30.5 M/H per card.  784 watts from the wall.

[gctom]

Windows installed in uefi mode?

That did the tricks for me.

[iamnewhere]

-MSI Z270-A PRO MB

I'm running 6 cards (MSI GTX 1070 Gaming X 8G) on the same motherboard on Windows 10.  Solo mining ETH.  30.5 M/H per card.  784 watts from the wall.

30.5 MH/s per card with just 784 from the wall? )

Can you maybe tell me your OC settings? When i pushed my card to 30.5 i was at 175W