What does two displays cloned mean for performance?

Brazo · 11 Dec 2016 at 23:38

If I plug a monitor and a TV into the back of a 1080 card and have the card outputting to both screens at the same time will that impact upon fps when gaming?

My situation is I have two screens in my living room and would like to run them both from the same pc but I would only need to use one screen at once, typically the tv for gaming and the monitor for photo editing.

It just seems less hassle to clone the displays in the control panel and turn on the pc and the screen which I want to use!

RichL · 12 Dec 2016 at 02:15

No impact on performance

Brazo · 12 Dec 2016 at 08:50

Thank you I'm happily surprised, so I could have all 4 outputs plugged in and they would all show the same thing? That has no impact on processing power?

Armageus · 12 Dec 2016 at 08:56

Brazo said:
Thank you I'm happily surprised, so I could have all 4 outputs plugged in and they would all show the same thing? That has no impact on processing power?

Should be absolutely fine - it's only actually rendering the frame once, and then copying it to all outputs.

If you run independant / extended desktop modes, then it would affect performance, as it would be rendering 2/3/4 separate images.

Brazo · 12 Dec 2016 at 22:31

Thank you.

Might just sell my other pc now!

'Might'!

Brazo · 16 Dec 2016 at 11:31

One more question. If the two outputs have different resolutions (1440p and 1080p) will this matter? will the game I'm playing simply output to 1080p ultra on the tv and 1440p ultra on the monitor?

spoffle · 16 Dec 2016 at 11:36

That won't work. All outputs will be at the same resolution in the way you're wanting to go about it.

Brazo · 16 Dec 2016 at 22:45

spoffle said:
That won't work. All outputs will be at the same resolution in the way you're wanting to go about it.

That's the thing, it does work in that the output on the tv is 1080p and the monitor is 1440p and I tested this earlier using the 1080p TV and battlefront at 60hz ultra and 130% frame scaling my gtx 1080 didn't exceed 42 degrees or 1100mhz

nalla · 20 Dec 2016 at 18:55

That's the thing, it does work in that the output on the tv is 1080p and the monitor is 1440p and I tested this earlier using the 1080p TV and battlefront at 60hz ultra and 130% frame scaling my gtx 1080 didn't exceed 42 degrees or 1100mhz

yep your right, well for NVidia cards anyways as I have a 27" 1440p 144hz and a 40" 4k and they both run at their native resolutions.

spoffle · 20 Dec 2016 at 19:06

Brazo said:
That's the thing, it does work in that the output on the tv is 1080p and the monitor is 1440p and I tested this earlier using the 1080p TV and battlefront at 60hz ultra and 130% frame scaling my gtx 1080 didn't exceed 42 degrees or 1100mhz

nalla said:
yep your right, well for NVidia cards anyways as I have a 27" 1440p 144hz and a 40" 4k and they both run at their native resolutions.

Not when cloning displays, as if they're running at different actual resolutions then they aren't clones.