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3xMonitor 2xGraphics Card Issue

Last response: in Graphics & Displays
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Anonymous
a b U Graphics card
a b Ý World of Warcraft
a b C Monitor
December 19, 2010 7:17:03 PM

I currently have an issue I can't seem to resolve. I have a 4890 1GB card and a 4850 512MB card powering three monitors. I have a Display Port coming out of the 4890 to a single monitor and the 4850 has a DVI and HDMI powering two other monitors.

I've been playing world of warcraft recently and noticed a problem. All of my graphics processing is being done on the 4850 (90-95% activity) and nothing is happening to the 4890 (0% activity), even when World of Warcraft is on the monitor that is connected to the 4890. I checked CCC and its showing the 4850 as the "Primary Graphics Adapter", however the 4890 is in PCIe01 and the 4850 is in PCIe02.

My questions here are:

1) Is it normal for only one graphics card to be handling the load for all three of the monitors, even if its not connected to them? My central monitor is only connected to the 4890, which has WoW running on it. If so, how do i select the 4890 as the "Primary graphics adapter"?

2) Why is the system choosing the 4850 over the more capable 4890 to do the graphics processing?

I was always under the impression that it was simply the graphics card that the monitor was plugged into would be the one handling the processing for that display.
Anonymous
a b U Graphics card
a b Ý World of Warcraft
a b C Monitor
December 19, 2010 9:07:36 PM

I'm not runnign these in crossfire, btw, which is why its puzzling to me.
December 19, 2010 9:29:18 PM

Hello,

For AMD's Eyeinfinity Technology, you must connect all THREE monitors to the same graphics card. One through the Display Port, and two through the other outputs (usually 2 DVI ports).

Here's what you must do :
Put the 4890 in the PCIe 16x_1 of your mobo and plug your three monitors in it. Then put your 4850 in the PCIe 16x_2 of your mobo. Then take a crossfirex bridge and connect the two. Install the latest drivers for AMD's website. Enjoy, everything will work correctly.

I've never seen a configuration like yours...I absolutely don't know how it can possibly work. To use two graphics cards, they must be connected together in some ways...SLI or CrossfireX.
http://forums.nvidia.com/index.php?showtopic=49620
http://answers.yahoo.com/question/index?qid=20080721141...

So you'll never be able to combine the two cards' processing power without a bridge.

Hope this helps,
al360ex
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Anonymous
a b U Graphics card
a b Ý World of Warcraft
a b C Monitor
December 20, 2010 2:24:06 AM

al360ex said:
Hello,

For AMD's Eyeinfinity Technology, you must connect all THREE monitors to the same graphics card. One through the Display Port, and two through the other outputs (usually 2 DVI ports).

Here's what you must do :
Put the 4890 in the PCIe 16x_1 of your mobo and plug your three monitors in it. Then put your 4850 in the PCIe 16x_2 of your mobo. Then take a crossfirex bridge and connect the two. Install the latest drivers for AMD's website. Enjoy, everything will work correctly.

I've never seen a configuration like yours...I absolutely don't know how it can possibly work. To use two graphics cards, they must be connected together in some ways...SLI or CrossfireX.
http://forums.nvidia.com/index.php?showtopic=49620
http://answers.yahoo.com/question/index?qid=20080721141...

So you'll never be able to combine the two cards' processing power without a bridge.

Hope this helps,
al360ex


Thank you for your reply, I'm not trying to do AMD Eyefinity. I'm not trying to combine the processing power of both. What I'm trying to do is this:

3 Monitors:

1 main one in the center for gaming, run only by the 4890. The two monitors on the side are plugged into the 4850, which will not be used for gaming, simply for chat/web browsing/etc. I want the crappier card to handle the load of the "non-gaming" tasks, but the 4890 to be dedicated to the central task (gaming, movie watching, etc).

So if anything I'm trying to SEPERATE the processing power of both, but it seems that the 4850 is handling the load of all three monitors, because even when I'm running a game on the central monitor, the 4890 doesn't see any load, where the 4850 is almost maxxed out, and I don't understand why because they aren't crossfire bridged.
December 20, 2010 3:01:03 AM

Here is someone in a situation similar to you : http://www.tankspot.com/showthread.php?66698-Secondary-...
If you have Windows 7, it will (should) work. If not, you won't be able to do it.

Also, try looking into the settings of the video card driver. You might be able to adjust it from there.

If it doesn't work, then I have absolutely no idea of what the problem might be.
!