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ClementN  
#1 Posted : Saturday, October 10, 2015 1:17:31 PM(UTC)
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Hello,


We have 2 ASUS laptops almost identical. (ROG, i7, Win 8.1 etc).

The only difference is the graphic card (one is GTX 970M and one is GTX 870M -- latest drivers)

The problem is vMix have big differences for the rendering time ( 1 ms and 37 ms ) when tested without any input. The situation is worst if there are camera inputs.

Can anyone please advice where to look to check the cause for that big difference ?
What can be wrong on the 37ms one ? Is it possible for the graphic card to be damaged in any way ? Can I check that ?


Thank you for your support,
Clement
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richardgatarski  
#2 Posted : Saturday, October 10, 2015 1:59:09 PM(UTC)
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have you checked in the performance tab that vMix is using the nVidia card/s?
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ClementN  
#3 Posted : Saturday, October 10, 2015 2:12:02 PM(UTC)
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Yes. I did, Richard.
Always nVidia
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IceStream  
#4 Posted : Saturday, October 10, 2015 7:29:43 PM(UTC)
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@ ClementN

How do the cards differ in a stress test such as "FurMark"?

http://www.ozone3d.net/benchmarks/fur/

I would think that both cards should perform reasonably well, but perhaps the 870 is somewhat defective or malfunctioning and that just might show up in the stress test.


Ice
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ClementN  
#5 Posted : Sunday, October 11, 2015 4:47:55 AM(UTC)
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Thank you very much, Ice.


I did the tests ( fullscreen, dynamic camera, fullHD) but as I didn't make this test before I am not sure if something is wrong or not.

There are differences between the 2 cards

870M -- FPS average: 17 ; temp: 87 ; score: 1165

980M -- FPS average: 38 ; teamp: 67 ; score: 2635


I think that the FPS 17 is too low but I am not sure if it is ok or not.

Any advice ?
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richardgatarski  
#6 Posted : Sunday, October 11, 2015 8:38:01 AM(UTC)
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Clement, not sure wich laptop you have, but the ROG's can usually have the Graphics card overclock. If so, may be it's not enabled on the 980M
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ClementN  
#7 Posted : Tuesday, October 13, 2015 2:07:14 PM(UTC)
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Thank you, Richard, Ice.


The only solution was the reinstall of Win 8.1 with the latest mVidia driver.

Don't know the cause of the problem.
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