One of my GTX 670s in SLI doesnt like DVI to one of my monitors, is it the monitor or the card?

BgT

Reputable
Apr 25, 2014
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4,510
So.. I have a problem... One of my GPU's DVI-D and DVI-I outputs don't work with one of my monitors... I'm curious as to whether it is the GPU or the Monitor that is at fault.

I have queried this before here to no avail though I didn't want to perform thread necromancy. Also I didn't have as much information as I do now. Also I now have 2 GPUs in SLI, which allows me to perform further checks. Speaking of which... I made a little chart of the results, which I will try to embed into this post...

GPU-screen%20connections.png


Basically this shows that all connections work, except for the DVI interface between the one GPU and the one monitor...
(one small point is that the DVI-I ports marked "No signal" do convey a signal when in Windows Safe Mode, but only a default 800x600 one.)

Anyone have any ideas?

Is it worth worrying about, or should I just use the other GPU to connect my monitors to for SLI? (as I have been doing - incidentally, the only reason I re-investigated this issue was due to the second GPU appearing to come down with the same issue as the first, and not like the ASUS monitor, though that appears to have resolved itself during testing...)

I'll put my specs here just in case too...

Motherboard: ASUS P8Z77-V PRO
CPU: Intel i5 3570K @3.40GHz OC'd to 4.22GHz
RAM: 16GB DDR3 (Corsair)
GPU: 2x NVidia GTX 670 2GB (MSI) in SLI
SSD: 256GB (OCZ)
HDD: 2TB (Seagate)
PSU: 750W (Corsair)
OS: Windows 7 Ultimate 64bit

Display 1: 22" LG M227WD
Display 2: 23.6" ASUS VE247H

Thanks!
 

BgT

Reputable
Apr 25, 2014
7
0
4,510
Sometimes now this issue (the ASUS monitor not being detected) is occurring on the second GPU too, most notably after a driver update or something similar. Often I have been able to get it to detect again after some tactical cable unplugging/rearranging and rebooting, however at times (like now) the ASUS monitor refuses to be detected at all.

I'm starting to think the monitor is a dud, and I should just buy another...

Any comments or help on this is still appreciated, thanks! :)
 

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