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4 x 4k outputs windows 7


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Hi David,

Is that also true for the Radeon Pro WX-series of cards?

And only a driver/OS issue, not a hardware issue of the FirePro cards?

It seems from this table (link below) FirePro W-series can do maximum 3 x 4K (3840X2160) at 60 Hz, but the Radeon Pro WX-series,

from WX 4100 up to the new WX 8200, can do (claims) 4 x 4K (3840X2160) at 60 Hz.

https://www.amd.com/en/technologies/eyefinity-professionals, table a bit down on the page.


Would be interesting to know if a FirePro W7100 would output 4 x 4K (3840X2160) at 60 Hz under Win10 but only 3 under Windows 7.

Driver version seems to be the same.



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Guest DavidA


It is a AMD driver limitation due to the fact that WATCHOUT use an older version of DirectX and AMD has said that they will not develop a fix for this.  So for Windows 10 it is all good with 4x4K, while Windows 7 does not support more than 3x4K. 

Best regards, 

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