2/4 GTX 1080's not recognised

Craiig · 9 Dec 2016 at 11:02

Hello,

I have 4 GTX 1080's installed on an Asus Z10PE-D8 WS motherboard.
configured currently with one xeon and 8GB of Ram.

(another xeon to follow after more ECC RAM has arrived)

I currently only have 2/4 cards showing in Windows 10, there is an SLI block on them.

All of the cards are water cooled with a terminal over them. So stripping it down to one card at a time is something I really want to avoid.

Any ideas how I can find out which cards are defected or any silly settings in the BIOS that i might be missing.

Thanks in advance.

*Ignore my signature, that is not the rig I'm talking about*

andicole0 · 9 Dec 2016 at 11:09

I thought 2-way SLI was the only supported configuration with the 1080. But you could use 2 and a third for physx.

http://www.pcworld.com/article/3071332/hardware/its-true-nvidias-geforce-gtx-1080-officially-supports-only-2-way-sli-setups.html
Andi.

JRS · 9 Dec 2016 at 11:11

This might be the issue - link.

Senture · 9 Dec 2016 at 11:12

If you look at your manual, PCI-E Slots 1-4 are provided from CPU1 while 5-7 are provided from CPU2. You won't get those cards working without your second Xeon installed.

Craiig · 9 Dec 2016 at 11:45

haha, omg. Thank you very much. I shall await for the ECC RAM, install the second processor and fingers crossed it should work. Cheers guys.

koooowweeee · 9 Dec 2016 at 11:48

I thought that board needed 2 CPUs. Gutted I sold mine now. Can't get rid of the CPUs tho. No one wants them. You don't need ecc ram with that board btw. I used corsair vengeance

VincentHanna · 9 Dec 2016 at 12:10

Nvidia have killed SLI support for more than 2x GPU's

I think you've wasted your money.

wedrum · 9 Dec 2016 at 12:13

4 1080's geez thats some power.

mart280 · 9 Dec 2016 at 12:22

wedrum said:
4 1080's geez thats some power.

and two cpu's, Craiig probably plays in 1080p

wedrum · 9 Dec 2016 at 12:25

motherboard is £500, a lot of pennies for 1080p

Gripen90 · 9 Dec 2016 at 13:52

rtho782 · 9 Dec 2016 at 15:00

What a waste, 2x Titan XP would perform better and cost less, and be much better supported.

And communication over the PCIe bus between the cards will need to go via QPI between the CPUs and therefore be horrible.

If this rig is for gaming.....

Disco_P · 9 Dec 2016 at 15:20

I severely doubt this is a gaming system.

whyscotty · 9 Dec 2016 at 15:50

Disco_P said:
I severely doubt this is a gaming system.

It's for minecraft

Disco_P · 9 Dec 2016 at 17:33

whyscotty said:
It's for minecraft

exactly.

Hybridtheory · 9 Dec 2016 at 18:23

Id like to see some pictures if possible :eek:

nightrider1470 · 10 Dec 2016 at 09:08

2x titans?, Why, why, just why?

orbitalwalsh · 11 Dec 2016 at 09:55

rtho782 said:
What a waste, 2x Titan XP would perform better and cost less, and be much better supported.

And communication over the PCIe bus between the cards will need to go via QPI between the CPUs and therefore be horrible.

If this rig is for gaming.....

Cost less.... 1080 can be picked for £540 if you know what to use or £470 excl VAT

demonix · 11 Dec 2016 at 17:32

You shouldn't bother with 4 way SLI in 10 series cards since in most games (if that is what it's for) it won't use all the cards and some games won't run at all (most likely two of the cards will be doing nothing no matter what is being done).

There are videos on youtube form the likes of Jayztwocents who have tested gaming in more then two way SLI and it hasn't ended well.