4K 30/60 Output limit?

[mjsisko]

Question for the group, where does the limitation on the number of 4K outputs originate. Is this a Windows 7/10, DirectX, or Watchout Limit. Using a new WX9100 I can get three 4K@60 stable under the current WO release on Windows 10. As soon as I add a forth output Watchout gets very unhappy. Any thoughts would be welcomed.

 

Thanks

 

 

[jfk]

Question for the group, where does the limitation on the number of 4K outputs originate. Is this a Windows 7/10, DirectX, or Watchout Limit. Using a new WX9100 I can get three [email protected] stable under the current WO release on Windows 10. As soon as I add a forth output Watchout gets very unhappy. Any thoughts would be welcomed.

 

Thanks

 

 

WATCHOUT is not the limit. It is a DirectX 9 / AMD driver issue.

 

For example, the WATCHPAX 4 provides four 4k60p outputs,

utilizing windows 7 and nVidia GPU.

Do not know of any solution that provides six 4k60p outputs with WATCHOUT.

 

But then again, if you think about it,

three 4k60p outputs is the equivalent number of pixels/sec as twelve1080p60 outputs.

Performance would be pretty stretched with just the three.

[mjsisko]

Thanks, can you elaborate more on the AMD side of the issue, using other software the AMD card will output 6 4K streams, DirectX 9 makes sense as the bottle neck in the equation. 

 

Thanks

[Guest DavidA]

Hi!

Unfortunately this is a bug in the AMD driver.  We have reported it but as it is DirectX9, AMD is not going to resolve it as it seems now. 

Here is another thread with the same issue:

http://forum.dataton.com/topic/2333-3-x-4k-not-working-unexpected-display-reconfiguration/

Best regards,
David
 

[mjsisko]

thanks David, shame its one of those low priority things for AMD, it would be great if they could fix that issue. Now that CPU and SSD tech has caught up we could actually use four and five 4K outs. 

 

Thanks