No 2560x1440 option?!

[knownas]

I bought one of those 27" Korean displays that have 1440p resolution (the X-Star DP2710 Multi, which comes with HDMI support). It came in perfect conditions and no dead pixels at all. The only major problem is that with DVI-D Dual Link connected Windows 7 only has resolution up to 1080p, while with HDMI (which isn't the native cable for the monitor) gives me 1440p.

As it was mentioned in a video I saw, the problem with using HDMI on this display is that it loses response time and I really wanted to use the DVI-D Dual Link port on the monitor.

Something that might be useful: before this display I had an Acer 1080p which was connected to the DVI-I port.

Anyone has any idea why is this happening?

Asus M5A78L - M/USB3
AMD FX 8350
Seagate 1TB SSHD
Sapphire AMD Radeon HD 7870 GHz Edition 2GB GDDR5
16GB RAM Corsair
Gigabyte 460 GHz

 

[geofelt]

I think you need a dual link dvi cable to get more than 1080P

 

[skit75]

I bought one of those 27" Korean displays that have 1440p resolution (the X-Star DP2710 Multi, which comes with HDMI support). It came in perfect conditions and no dead pixels at all. The only major problem is that with DVI-D connected Windows 7 only has resolution up to 1080p, while with HDMI (which isn't the native cable for the monitor) gives me 1440p.

As it was mentioned in a video I saw, the problem with using HDMI on this display is that it loses response time and I really wanted to use the DVI-D port on the monitor.

Something that might be useful: before this display I had an Acer 1080p which was connected to the DVI-I port.

Anyone has any idea why is this happening?

Asus M5A78L - M/USB3
AMD FX 8350
Seagate 1TB SSHD
Sapphire AMD Radeon HD 7870 GHz Edition 2GB GDDR5
16GB RAM Corsair
Gigabyte 460 GHz

Are you using a Dual Link DVI-D cable?

 

[knownas]

I think you need a dual link dvi cable to get more than 1080P

Are you using a Dual Link DVI-D cable?

I am using a Dual Link DVI-D cable. Sorry, I thought I had written that.

 

[geofelt]

Are you certain??
You can't tell just by looking at the connectors.
I really doubt that any dvi cable you got with your old monitor would have the added internal cabling to operate as dual link dvi.

 

[knownas]

Are you certain??
You can't tell just by looking at the connectors.
I really doubt that any dvi cable you got with your old monitor would have the added internal cabling to operate as dual link dvi.

I am sure. This is the cable supplied with the new monitor.

 

[geofelt]

You would hope that they sent you a proper dual link cable.
Possibly it was a packaging mistake or a defective or mislabeled cable.
If you are intent on pursuing a dvi connection, you could try ordering another.

Since the reason for the change is some performance related video, how confident are you about the video and the
performance difference?
Do you have a link for it?

 

[Eggz]

Be sure you're plugging it into the Dual-Link DVI-I connector on your card, and make sure the cable has a pin to go into each of the small holes.

 

[skit75]

Are you saying his "DVI-D DL cable" could be terminated with DVI-D DL plugs, but not actually connected end to end? I've never seen that but I suppose it is possible. Costs are cut everywhere.

 

[Eggz]

That could be the case. I was thinking bent cable-pins, and I also looked up the spec on his GPU. The DVI-I port is the only one that mentions 1440p @ 60 Hz, even though the DVI-D technically has the spec to handle it.

 

[geofelt]

Are you saying his "DVI-D DL cable" could be terminated with DVI-D DL plugs, but not actually connected end to end? I've never seen that but I suppose it is possible. Costs are cut everywhere.

I have a cable like that that does not work at 2560 x 1600.
I would hope that the monitor vendor would know to supply you with the correct cable.

As to the dvi-I post above, I think that is wrong. The 4 small pins are for a analog output used with a vga monitor.

 

[geofelt]

Your card is an older one so possibly it does have such a restriction.
It baffles me why it might be limited to the dvi-I port.
A dvi-I port will also have the capability of dual link.
Try it and see.

 

[skit75]

@ OP

You said you had a DVI-D cable. It has to be a DVI-D Dual Link cable. The DVI-D Single Link won't do for that resolution.

 

[knownas]

Solved. Someone solved it for me. Thanks.

 

[skit75]

So, what was the issue?

Open ended threads suck. It is OK if it is embarrassing.... We've all been there.

 

[Eggz]

The 4 small pins are for a analog output used with a vga monitor.

Yeah, they are. The Dual Link DVI-I connector support pretty much everything that came before it, including Dual Link DVI-D. That's why it has all of the pins - if you look at it - from all of the other DVI connectors. It's basically an "Anything-you-need-DVI connector." So using the Dual Link DVI-D cable on it will work just like a Dual Link DVI-D, but I said to plug it in there because his GPU documentation said that the Dual Link DVI-I plug supports 1440p @ 60 Hz. Worth a shot.

 

[knownas]

So, what was the issue?

Open ended threads suck. It is OK if it is embarrassing.... We've all been there.

Was connected in the wrong spot ha ha. No embarrassment at all. I know near to nothing about PCs. Actually, the answer by Eggz was a correct one, that's what my friend tried (probably more by instinct than any other thing, but still... it was the solution!