DevaVictrix May 26, 2021 @ 12:02pm
GTX660 dual monitors
Does anyone know if this gpu can display on two monitors using a digital connection?

I’ve got a 3440x1440p 144hz monitor connected with DP and a 1080 60hz monitor connected via the DVI-I port using a DVI - VGA adapter.

Whenever I plug the 1080 monitor in with hdmi Windows and the nvidia driver don’t even detect the monitor.

Is it a gpu limitation?

GPUs are obviously hard to come by but there are GT1030s out there. Will this display to two monitors using digital. Can it manage 144hz too? The 660 seems to be limited to 75hz.

Thanks
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Showing 1-14 of 14 comments
[☥] - CJ - May 26, 2021 @ 12:17pm 
Its likely due to the GPU not being all that great with HDMI, been there done that with a 660 Ti. HDMI cable itself is a possibility, but from experience its likely the GPU itself


When it comes to connectivity something along the lines of a GT1030 would be a better choice if all you need is a display out.
Mad Scientist May 26, 2021 @ 12:33pm 
Originally posted by ☥ - CJ -:
Its likely due to the GPU not being all that great with HDMI, been there done that with a 660 Ti. HDMI cable itself is a possibility, but from experience its likely the GPU itself


When it comes to connectivity something along the lines of a GT1030 would be a better choice if all you need is a display out.
There is no issue with the 660 series and HDMI, please don't give bad information.

@OP - Yes, it can easily do 2 monitors without issues with digital connections.
You'll want to ensure the driver is installed properly, and that you're using NVCP to setup multiple displays. There is no reason it shouldn't detect the monitor unless the Source is wrong (would still detect) or there's an issue with the HDMI port itself or the cable.

Boot the system only with the HDMI plugged into the gpu itself, if it doesn't display but the system clearly boots normally, try another cable & ensure if there's source selection on the monitor, that it's selecting HDMI or otherwise a "PC Mode", else, if those do not succeed, then chances are the HDMI port is damaged or otherwise faulty on the GPU.

1 digital and 1 VGA via DVI-I is also not an issue.

GT 1030 (default units) should have DVI-D (NO ANALOG SIGNAL) and HDMI, or (2) DVI-D ports which vary per part number/model
DP 1.42, HDMI 2.0b, Single Link-DVI
HDMI would be 3840x2160 as the highest supported for 144Hz resolution.
DP would be 5120 × 2880 as the highest supported for 144Hz resolution.
Last edited by Mad Scientist; May 26, 2021 @ 12:41pm
[☥] - CJ - May 26, 2021 @ 12:39pm 
Sorry to burst your bubble
but i said
FROM EXPERIENCE

Meaning i had the same trouble with 660 Ti systems using HDMI.
So either the 660's dont like HDMI in general or its specific with the monitor being used

Just because you dont agree with something doesnt automatically make it bad information
Try thinking things out before you accuse someone of giving bad information

And considering how old a GTX 660 is compared to a GT1030 in addition to audio/video capabilities between the 2 my initial statement is accurate.

And for the record, i ALSO said the HDMI cable itself could be at fault.

So slow your role bud
Mad Scientist May 26, 2021 @ 12:42pm 
Originally posted by ☥ - CJ -:
Sorry to burst your bubble
but i said
FROM EXPERIENCE

Meaning i had the same trouble with 660 Ti systems using HDMI.
So either the 660's dont like HDMI in general or its specific with the monitor being used

Just because you dont agree with something doesnt automatically make it bad information
Try thinking things out before you accuse someone of giving bad information

And considering how old a GTX 660 is compared to a GT1030 in addition to audio/video capabilities between the 2 my initial statement is accurate.

And for the record, i ALSO said the HDMI cable itself could be at fault.

So slow your role bud
I work in the industry and worked for a GPU manufacturer.
Your experience does not equate to all units. So, yes, you gave bad information.
[☥] - CJ - May 26, 2021 @ 12:50pm 
Same goes for you bud
Your experience ALSO does not "equate to all units"

Just because you supposedly worked in the industry does not make you an expert here.
Mad Scientist May 26, 2021 @ 12:51pm 
Originally posted by ☥ - CJ -:
Same goes for you bud
Your experience ALSO does not "equate to all units"

Just because you supposedly worked in the industry does not make you an expert here.
Actually it does.
[☥] - CJ - May 26, 2021 @ 12:56pm 
Not on here where we have no proof of your so called expertise bud.
Have a nice day :)
Mad Scientist May 26, 2021 @ 1:05pm 
Originally posted by ☥ - CJ -:
Not on here where we have no proof of your so called expertise bud.
Have a nice day :)
Dismissive, nice touch.

One of us made suggestions to troubleshoot & gave information, you blamed an entire series based off of bad experience, with a minor hint that it could be the cable but clearly the bad experience trumped even attempting to help.

I also have documentation on a manufacturers site which exists because I'm the one that found a series & architecture specific issue & resolution, which was used countless times. Suppose we'll ignore that though, since I didn't give proof before you demanded it.

Next time, try to help the individual instead of giving bad information based upon bad experiences. I'll take my thousands of units over your few bad experiences.
Bad 💀 Motha May 26, 2021 @ 1:06pm 
GTX 10 series and above don't have DVI-I, it's DVI-D only and can't support VGA.
If you must use VGA, then buy a "Active DP Male to VGA Female Adapter"
[☥] - CJ - May 26, 2021 @ 1:13pm 
Originally posted by Bad 💀 Motha:
GTX 10 series and above don't have DVI-I, it's DVI-D only and can't support VGA.
If you must use VGA, then buy a "Active DP Male to VGA Female Adapter"

This
Mad Scientist May 26, 2021 @ 1:15pm 
Originally posted by Bad 💀 Motha:
GTX 10 series and above don't have DVI-I, it's DVI-D only and can't support VGA.
If you must use VGA, then buy a "Active DP Male to VGA Female Adapter"
Correct,
Originally posted by Mr. Gentlebot:
GT 1030 (default units) should have DVI-D (NO ANALOG SIGNAL)

At that point, best to use a purely digital connection, OP. Don't try to use VGA with the 1030, only the 660 via DVI-I.
_I_ May 26, 2021 @ 2:54pm 
iirc its the gtx 9xx that removed the analog abilities
no vga/dvi-a/dvi-i ports and are dvi-d only
dvi-a/i to vga will not work since the gpu does not have the dvi analog pins

the gtx 660 has 2x dl-dvi i/d ports
Maximum Digital Resolution : 4096x2160
Maximum VGA Resolution : 2048x1536

using both digital would be beyond its limits
one analog and one digital is fine

a 1030 can support both displays with digital connections (dp+hdmi)
https://www.nvidia.com/en-us/geforce/graphics-cards/gt-1030/specifications/
Maximum Digital Resolution : 7680x4320@60Hz


using it as is with analog 1080p is no visual difference
only problem will be with hdcp content
Last edited by _I_; May 26, 2021 @ 2:58pm
[☥] - CJ - May 26, 2021 @ 4:29pm 
Originally posted by _I_:
iirc its the gtx 9xx that removed the analog abilities
no vga/dvi-a/dvi-i ports and are dvi-d only
dvi-a/i to vga will not work since the gpu does not have the dvi analog pins

the gtx 660 has 2x dl-dvi i/d ports
Maximum Digital Resolution : 4096x2160
Maximum VGA Resolution : 2048x1536

using both digital would be beyond its limits
one analog and one digital is fine

a 1030 can support both displays with digital connections (dp+hdmi)
https://www.nvidia.com/en-us/geforce/graphics-cards/gt-1030/specifications/
Maximum Digital Resolution : 7680x4320@60Hz


using it as is with analog 1080p is no visual difference
only problem will be with hdcp content

Exactly, which is why i said the 1030 would be a better than a GTX 660 unless VGA was necessary.

as far as video content goes the 660 is outclassed by the 1030 and it wont have as many output flaws as a 660 would in comparison.
Last edited by [☥] - CJ -; May 26, 2021 @ 4:30pm
Bad 💀 Motha May 27, 2021 @ 1:14pm 
Yes I think once the GTX 9xx series came out, it was digital only.
Users wanting to use VGA on these or newer GPUs must basically go and buy
"active DP male to VGA female adapter"
DP side connects to GPU; then simply connect to VGA based display using VGA male to male cable.

So yes the GTX 6xx series you can use VGA, via DVI-I to VGA adapter that cards came with.
GTX 9xx series and above, those DVI are "D" only (Digital) and thus can't support VGA via an adapter.
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Date Posted: May 26, 2021 @ 12:02pm
Posts: 14