Two Monitors Reduce FPS?

Omar Khalid · Apr 21, 2014

So i got the Radeon R9 290X and i know its a great card but am worried about few things.

the card has tow Inputs for HDMI so i am thinking about buying 2 ASUS MX239H 23"AH IPS,5ms,
Not to play the same game on both Monitors.

i just want to be able to play the game on Monitor A and have something else on monitor B

would that Overheat the Video card or PC?
Would that cause the Game to crash or drop in FPS?

currently the highest Temperature for my video card while playing COD Ghosts is 95 but i dont hear it making that high sound like it used to before installing some extra fans and a CPU Cooler dont ask me how that worked

Entomber · Apr 21, 2014

it should cause a drop in FPS, but won't cause any major problems like you describe.

CraigN · Apr 21, 2014

If you are playing games on one monitor and merely using applications in the other, there *may* be an FPS drop, but it will be very minimal. On an R9 290X, I doubt you would even notice any at all, honestly.

It should add little to no extra heat and should not cause any crashes. I'm not even entirely convinced it will drop your FPS, actually. I have a GTX Titan and I don't see any visible improvement in FPS if I unhook my secondary 27" monitor and play on just my 24" gaming monitor.

Hope that helps.

illuminatuz · Apr 21, 2014

Well, it depends.. if you are not doing anything in your display B, it will consume very little or no vRAM.. however, if you are say playing a movie, it will consume some CPU and little bit of GPU.

it basically breaks down to how many pixels the GPU must calculate and render. if you are playing COD/BF on display A, say that consumes some 80% resources and gives 60FPS, you got the 20% resources of the GPU for display B. If you run an app that consumes GPU power here as well, the resources allocated for display A will be reduced as more load is put on the GPU and yes the FPS will fall..

Overheat? Yes.. more stress = more power consumption = more heat..

if you got some cash, try a new GPU cooler, preferably a liquid cooler.. then overclock it.. maybe it will give about 10% improvement provided the silicon, temp/cooling, voltage, PSU, and everything else is perfect..

chris987 · Apr 21, 2014

also depends on the game you play. some games must run on full screen for best performance.if you want to have the ability to extend your mouse to the second monitor while playing and running on windowed mode may result in minor performance drop or a bit of stuttering. thats what i have experienced! it will also have a minor impact on vram and temps but not something to worry about!
all reference design 290x run that hot. adding a second monitor may just increase a bit, idle temps not max temps!if you want to improve that a bit, thy improving the towers air flow.

Kekoh · Apr 21, 2014

If you just have monitoring programs open on the second screen, or a simple browser window with no videos, the performance difference will be very minimal. Like 1-4 FPS. Nothing to worry about. I highly doubt the video card would run more hot, as it's already busy rendering a game.

If you are watching a youtube video though, there will be slightly more performance loss. More like 5-10 FPS.

Overall it's very minimal. You have nothing to worry about. I've had multiple monitors for years, and even on weaker GPU's the difference was minimal.

Omar Khalid · Apr 21, 2014

thank you all for your quick answer would of picked all the answers as a solution if i could

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Two Monitors Reduce FPS?

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