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1440p 100hz, bandwidth usage?

Fredrikmikael
By Fredrikmikael
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Go to solution Solved by Glenwing,

Yes, 3440×1440 at 120 Hz is the maximum of DisplayPort 1.2.

 

On 11/24/2015 at 3:36 PM, Ryan_Vickers said:

.

 

Bandwidth is resolution x colour depth x refresh frequency

 

1920 × 1080 × (24, or 8-bit x 3 subpixels) × 60 Hz = 2,985,984,000 bits per second, or 2.986 Gigabits per second, for the raw data.

 

You also need to account for timing format, so an additional 5-10% or so, with modern timings.

Posted

My graphics card(GTX970) is running DP1.2 which apparently supports a bandwith of up to 17.28Gbit/s.

Considering buying the X34 Acer monitor, 100hz(overclocked) - 3440x1440. Will DisplayPort 1.2 be enough ?

 

EDIT: okay putting 1440p in the title doesn't make much sense, didn't come to my mind that it has more pixel horizontally since its ultrawide.

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yes its enough

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I don't know if it's this simple, but in theory, the bandwidth required would be (horizontal res) x (vertical res) x (3 colour channels) x (FPS) x (8 bits/byte)

 

so, for 1080p at 60 fps, it would be 2.99 Gbit/s

 

And for 3440 x 1440 @ 100 fps, it would be 11.9 Gbit/s, so yes it should be fine

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  • Solution

Yes, 3440×1440 at 120 Hz is the maximum of DisplayPort 1.2.

 

On 11/24/2015 at 3:36 PM, Ryan_Vickers said:

.

 

Bandwidth is resolution x colour depth x refresh frequency

 

1920 × 1080 × (24, or 8-bit x 3 subpixels) × 60 Hz = 2,985,984,000 bits per second, or 2.986 Gigabits per second, for the raw data.

 

You also need to account for timing format, so an additional 5-10% or so, with modern timings.

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Yes, 3440x1440 at 100Hz is the maximum of DisplayPort 1.2.

 

 

 

Bandwidth is resolution x colour depth x refresh frequency

 

1920 x 1080 x (24, or 8-bit x 3 subpixels) x 60Hz = 2,985,984,000 bits per second, or 2.986 Gigabits per second, for the raw data.

 

You also need to account for timing format, so an additional 5-10% or so, with modern timings.

yeah sorry I messed that up pretty bad initially, see above  :rolleyes:

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Can you please fix that quote, it's really embarrassing  :ph34r:

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Fine, fine :P

thanks

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