when i put 3 displays on it or more only 2 work
problem with amd radeon hd 7850 eyefinity 6
Updated on 19-06-2017 in
HD 7000 Series
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Good day Stevenpennock,
What screens are you using and what cables or adapters are you using ?
In general …
To make a HD 7850 work with 6 screens you will need to enable the Eyefinity feature.
You do this by using the/a DP ouput on the Graphics card. OS need to be Vista or newer.
If you connect Screens with DP input you can just use normal/passive Mini-DP to DP adapter and normal DP cable.
if you use Screen without DP input you will need to convert the DP output to DVI/HDMI/VGA with adapters that support Eyefinity and after the frist 2 screens these adapters also need to be Active.
Active Adapters:
CAC-1102
CAC-1152
CAC-1170
So
Screen 1: Passive Adaper Mini-DP to DVI or HDMI + normal cable to screen
Screen 2: Passive Adaper Mini-DP to DVI or HDMI + normal cable to screen
Screen 3: Active Adaper with Eyefinity support Mini-DP to DVI or HDMI + normal cable to screen
Screen 4: Active Adaper with Eyefinity support Mini-DP to DVI or HDMI + normal cable to screen
Screen 5: Active Adaper with Eyefinity support Mini-DP to DVI or HDMI + normal cable to screen
Screen 6: Active Adaper with Eyefinity support Mini-DP to DVI or HDMI + normal cable to screen
You can also use active adaters on the first 2 screens but as you have noticed, this is not a necessaty.
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