Can I get 1080p 75Hz with a VGA D-Sub?

Pikudao

n00b
Joined
Jul 16, 2016
Messages
1
I want to overclock a LG E2240s to 75Hz. Can I do it with the D-Sub? And if i can't, the Dvi support 1080p 75Hz?
 
Joined
Feb 13, 2003
Messages
634
VGA > Depends on the quality of the cable, but the spec allows for up to 85hz.

DVI spec allows for 150hz+

As you likely don't know the quality of your cable, then you simply need to test it and see if it works. Which you could have done without asking and waiting for a response.
 

Armenius

Fully [H]
Joined
Jan 28, 2014
Messages
32,423
Single-link DVI can only go up to 72 Hz at 1080p. Dual-link DVI could theoretically go up to about 152 Hz, but that is utilizing the entire 330 MHz pixel clock.
 

geok1ng

2[H]4U
Joined
Oct 28, 2007
Messages
2,130
Single-link DVI can only go up to 72 Hz at 1080p. Dual-link DVI could theoretically go up to about 152 Hz, but that is utilizing the entire 330 MHz pixel clock.

This is a common misunderstanding. There is no in-spec limit for pixel clock over Dual Link DVI. with the proper cable one can drive 1440p at 140Hz (catleap koreans) or 4k at 60Hz (custom board for Seiki 39"). In both examples the panel is the limiting factor, not the Dual Link DVI connection. Google "pixel clock patcher" for more information about DL-DVI "limits".
 

jbltecnicspro

Supreme [H]ardness
Joined
Aug 18, 2006
Messages
7,747
This is a common misunderstanding. There is no in-spec limit for pixel clock over Dual Link DVI. with the proper cable one can drive 1440p at 140Hz (catleap koreans) or 4k at 60Hz (custom board for Seiki 39"). In both examples the panel is the limiting factor, not the Dual Link DVI connection. Google "pixel clock patcher" for more information about DL-DVI "limits".

Are you saying that DVI is actually a pretty good interface? The way some people around here poo-poo it you swear it was a composite video connection... :D
 

Zareek

Limp Gawd
Joined
Sep 5, 2011
Messages
191
VGA is an analog connection so the cable, the video source and the display side circuitry all have a part to play. It should and most likely will work with a decent cable and a modern video card.
 
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