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2560 x 1440 on Gt 240 via HDMI

Joined
Nov 3, 2010
Messages
13
Motherboard
intel i5
CPU
intel i5
Graphics
geforce gt240
Mac
Classic Mac
Mobile Phone
Hi guys,
I recently upgrade my monitor with a dell u2715h.
The max resolution aviable in El Capitan is 2048 x 1152 on HDMI, wich is better than before but not the best...
I know that gt240 can handle 2560 x 1440 @60. The only way to do it is to force resolution with switchresx, but i can obtain only 40 Hz maximum, that is not so good...
How can i obtain full res of 2560 x 1440 @60?
1) is this a cable problem? can i try a better hdmi cable or a dvi-dp cabel?
2) is this a hardware problem? must i upgrade my graphic card?
3) is this a driver/software problem?

thanks in advance.
 
Joined
Feb 23, 2015
Messages
29
Motherboard
Gigabyte GA-Z97-D3H
CPU
Intel i5-4690
Graphics
GTX 760
Mac
MacBook
Classic Mac
iBook
Mobile Phone
iOS
If you want 2560x1440 to just work you need to use DisplayPort.

If you search the forums for "2560x1440 HDMI" there's threads with solutions.
 
Joined
Oct 19, 2011
Messages
1
Mac
Classic Mac
Mobile Phone
I solved the same problem with a Dell u2515h by using a dvi-to-hdmi cable. With this, I get the full resolution.
 
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