Originally posted by: ArkaynAdrian Hi everyone,
I think my issue is slightly different to what I can find on here and google.
I have xfire 7970's (Gigabyte reference) and 3 Samsung S27A950D monitors. These monitors support DP, DVI-D and HDMI.
When I do a Eyefinity setup of 5760x1080 I can only select 60 hz in Windows and Catalyst control panel.
IF I run 1 monitor at a time I can select 120hz on the two connected by DP but only 60hz on the DVI-D (windows and CCC).
The cable is 100% DVI-D. I have installed the monitor drivers too.
Do I need an DVI to DP adapter so that all 3 monitors are connected by DP to get 120hz Eyefinity?
Does the adapter need to be ACTIVE?
I ask cause everything I find says I can do 120hz with DVI-D or DP but it won't work for me hence I may have another issue. All driver versions from 14.4beta all the way through the 13's has this issue. The other thing that throws me is nVidia works with DVI-D for 120hz multiscreen.
So in short do I need to run different to 2x DP and 1x DVI-D to get 120hz?
Sorry to hear that you're having issues with being able to setup 120hz Eyefinity with 2 DP + 1 DVI-D. (Correct me if I'm mistaken)
I'm under the assumption (from the information you've provided) that you've already tried 2 DP(to miniDP) + 1 DVI-D connections and you are still unable to get 120hz frequency, yes?
If that's the case, it sounds as if you may need an Active Adapter with the following configuration:
Monitor DP -> MiniDP Port
Monitor DVI-D -> DVI-D Port
Monitor DVI-D + Active Adapter -> MiniDP Port
I highly recommend seeing if you have a friend that has an Active Adapter to test this theory as it's a little on the expensive side (and not to mention finnicky).
Something like this:
I've used these Active Adapters for years and I suggest getting one as a last resort as they are finnicky and clunky.
For me, I'm currently using R9 290's with 2 DVI-D + DP for my 120hz eyefinity setup (and another 1080p 60hz monitor via HDMI for a 3x1 +1 Extended setup).
When I was using 7970's I was using DVI-D + 2 (DVI-D to miniDP Adapters [same ones as the link I provided above]) and those allowed me to run Eyefinity at 120hz.
Let me know what you think.
Again, I stress that the adapter be a last resort scenario as they're not the greatest things in the world.
Maybe get a DP2.1 Hub?
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