GTX 1080 + 120hz 4k monitor

steelbom

· Skating Enthusiast

Joined Aug 22, 2009

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8,191 Posts

Discussion starter · #1 · Sep 15, 2016

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Hi,

I've got a mate who's building his first rig.
He's gunna get a 4k 120hz tv and his rig will have a GTX 1080. He plans on adding another one down the track.

I'm no expert on this, but what input does he need to make sure the TV & GPU have in order to output 4k@120hz?

If both TV and GPU have DisplayPort 1.3 is that enough?

When doing SLI do you need to connect the second GPU to the monitor as well? Or only connect the two GPUs together with an SLI bridge?

Thanks!

 

C

caenlen

· Phenomenologist

Joined Mar 29, 2013

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6,098 Posts

#2 · Sep 15, 2016

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Quote:

Originally Posted by steelbom

Hi,

I've got a mate who's building his first rig.
He's gunna get a 4k 120hz tv and his rig will have a GTX 1080. He plans on adding another one down the track.

I'm no expert on this, but what input does he need to make sure the TV & GPU have in order to output 4k@120hz?

If both TV and GPU have DisplayPort 1.3 is that enough?

When doing SLI do you need to connect the second GPU to the monitor as well? Or only connect the two GPUs together with an SLI bridge?

Thanks!

Click to expand...

120hz tv's do not run at a real 120hz refresh rate. only computer monitors do, and no 4k 120hz exist yet, his games will still show as 60 fps on that tv.

 

steelbom

· Skating Enthusiast

Joined Aug 22, 2009

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8,191 Posts

Discussion starter · #3 · Sep 15, 2016

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Quote:

Originally Posted by caenlen

120hz tv's do not run at a real 120hz refresh rate. only computer monitors do, and no 4k 120hz exist yet, his games will still show as 60 fps on that tv.

Click to expand...

Ah good to know. I was a little suspicious about a TV having such a high refresh rate.

 

SystemTech

· Mining the DB

Joined Jun 4, 2009

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2,330 Posts

#4 · Sep 15, 2016

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Proof there : https://www.youtube.com/watch?v=Sxvu7qf6rDw

 

QSS-5

· Overclock Lord

Joined Sep 22, 2007

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515 Posts

#5 · Sep 15, 2016

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He can still get his 1080 but he will have to wait until they releae the first 4k 120hz monitors which will happen next year. expect the first 4k 120 hz monitors to arrive within the first to second quarter of 2017

 

NikolayNeykov

· Banned

Joined Jan 25, 2016

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450 Posts

#6 · Sep 15, 2016

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Quote:

Originally Posted by QSS-5

He can still get his 1080 but he will have to wait until they releae the first 4k 120hz monitors which will happen next year. expect the first 4k 120 hz monitors to arrive within the first to second quarter of 2017

Click to expand...

I am waiting them

 

E

EniGma1987

· Premium Member

Joined Sep 8, 2011

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6,971 Posts

#7 · Sep 16, 2016

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Quote:

Originally Posted by steelbom

Ah good to know. I was a little suspicious about a TV having such a high refresh rate.

Click to expand...

The weird part is that the TV panel itself are often spec'ed as a native 120Hz panel even at 4k resolution. They also frequently come with interpolation up to 240, 480, and some cases even higher framerate. I believe the main issue with being limited to only 60Hz input signal on the TVs is actually the input board and scaler the TVs use. Currently there are no models that have an actual input capable of higher than 4k 60Hz, so that is where you are limited to. And no computer monitors have a DP1.3 input yet, and even if they did they are not currently using 120Hz panels. so... ya :/ Hopefully next years models we will see it happen.

 

steelbom

· Skating Enthusiast

Joined Aug 22, 2009

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8,191 Posts

Discussion starter · #8 · Sep 16, 2016

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Thanks everyone for the input.
Quote:

Originally Posted by EniGma1987

The weird part is that the TV panel itself are often spec'ed as a native 120Hz panel even at 4k resolution. They also frequently come with interpolation up to 240, 480, and some cases even higher framerate. I believe the main issue with being limited to only 60Hz input signal on the TVs is actually the input board and scaler the TVs use. Currently there are no models that have an actual input capable of higher than 4k 60Hz, so that is where you are limited to. And no computer monitors have a DP1.3 input yet, and even if they did they are not currently using 120Hz panels. so... ya :/ Hopefully next years models we will see it happen.

Click to expand...

Ah really, that's surprising. And very weird haha.

Thanks!

 

C

comicgamer

· Registered

Joined Dec 4, 2016

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1 Posts

#9 · Dec 4, 2016

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Quote:

Originally Posted by caenlen

120hz tv's do not run at a real 120hz refresh rate. only computer monitors do, and no 4k 120hz exist yet, his games will still show as 60 fps on that tv.

Click to expand...

This is not entirely true.
Vizio M series TVs are advertised as 240hz but rub natively at 120hz.
With my GTX1080 and a DVI-HDMI cable I am playing Overwatch at 1080P 120hz on a 65" 4k tv. Verified with that alien refresh rate website.
The one caveat is that you must create a custom resolution in windows with 1920×1080 @ 120hz