IGPU multi monitor on or off
Blog Show Does connecting 2nd monitor to integrated GPU decrease performance?
Mar 11, 2016 154
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I'm currently running 2 1080p monitors one is 60hz the other is 144hz. With my current available cables i can only get the second one running if i plug it into my motherboard instead of my 1070, because it only takes VGA or DVI-D, does this decrease performance? specs: Sep 5, 2016 5,965
12 34,165 1,869
I assume that since the second monitor only accepts VGA and DVI but you can't use it with the videocard, this means you are already using the DVI output of the videocard for the first monitor. Is that correct? If so, maybe you can use an adapter on the videocard HDMI output to convert it to DVI, so you can then connect it to the second monitor. I don't like using
adapters, but I'd rather use an adapter than use a videocard and integrated graphics at the same time. A 1070 costs a decent chunk of money, it just seems weird to spend that money on a higher end card only to turn around and use integrated graphics again. Mar 16, 2018 2,146 9 3,065 413
I don’t think it will work. I think igpu is automatically turned off when you plug in a discrete card.
Mar 21, 2015 9,159 883 57,690 2,953
When you have dedicated GPU in the system then the on-board GPU is automatically disabled. In other words, you can't run 2x monitors at once where one is plugged to the GPU and another to the MoBo. Jan 10, 2006 24,809 350 75,790 2,293
You can do this easily, it's what I am doing right now. It will not impact performance negatively, a slight increase if anything.
Mar 21, 2015 9,159 883 57,690 2,953
Did some digging and that dual monitor setup is only possible IF you can re-enable the iGPU within BIOS once you have dedicated GPU in the system. What i said earlier is also correct since BIOS will automatically disable iGPU once dedicated GPU is put in the system. And vote down from me for
13thmonkey for failing to explain how to use dual monitor setup with GPU + iGPU combo and the limitations of this setup. Sep 5, 2016
5,965 12 34,165 1,869
I assume that since the second monitor only accepts VGA and DVI but you can't use it with the videocard, this means you are already using the DVI output of the videocard for the first monitor. Is that correct? If so, maybe you can use an adapter on the videocard HDMI output to convert it to DVI, so you can then connect it to the second monitor. I don't like using
adapters, but I'd rather use an adapter than use a videocard and integrated graphics at the same time. A 1070 costs a decent chunk of money, it just seems weird to spend that money on a higher end card only to turn around and use integrated graphics again. Mar 11, 2016 154 0 10,680 0
Why would you vote him down? Explaining how to set it up was not my question because I am currently using this setup which is clearly written down. Mar 21, 2015 9,159 883 57,690 2,953
Why would you vote him down? Explaining how to set it up was not my question because I am currently using this setup which is clearly written down. In graphical aspect, both monitors have their own GPU to power them and in that sense, there should be a slight performance increase. But since your 2nd monitor is run off by iGPU, it puts a higher load on a CPU and that can drop the CPU's performance. Without testing (benching), it can't be said for sure if this setup would drop the PC's overall performance or not. Since you have your setup running, you can easily do some benchmarks with only one
monitor running and then with 2 monitors running to see if there is any performance drops or increases.
Jan 10, 2006 24,809 350 75,790 2,293
Why would you vote him down? Explaining how to set it up was not my question because I am currently using this setup which is clearly written down. In graphical aspect, both monitors have their own GPU to power them and in that sense, there should be a slight performance increase. But since your 2nd monitor is run off by iGPU, it puts a higher load on a CPU and that can drop the CPU's performance. Without testing (benching), it can't be said for sure if this setup would drop the PC's overall performance or not. Since you have your setup running, you can easily do some benchmarks with
only one monitor running and then with 2 monitors running to see if there is any performance drops or increases. If you leave everything on auto and your mobo has the outputs and logic to use an iGPU then it will work. They are designed to be able to run at the same time. I stand to be corrected but please show me an example where it can't. I've had this question many time on here, not a single person has come back saying it wouldn't work. Using the IGPU DOES NOT put a
higher load on the CPU, the CPU is not emulating a GPU, they are separate and discrete chunks of the chip, the iGPU will generate a little more heat to be dissipated, but if you are not gaming on the iGPU this is unnoticeable.
Jun 19, 2011 32,949 1,423 128,940 6,103
You can do this easily, it's what I am doing right now. It will not impact performance negatively, a slight increase if anything. I run 3 displays on my rig. 2 monitors on the 980ti and a 4k TV on the Igpu. Some boards will automatically disable the igpu when a dedicated gpu is installed but it's a simple matter of entering the bios and re-enabling the igpu for
multi monitor mode to fix that. .
Dec 26, 2012 30,023 4,234 141,190 5,233
If you look at any bios, it asks for primary graphics adapter. Default being the igpu. Most bios are set for single monitor usage, it's a power saving feature as the bios will no longer spend time or energy looking for other sources. The act of adding a PEG in effect disables the igpu, there being only one monitor. If bios is changed to multi-monitor, the igpu is regulated to
Secondary graphics adapter, the PEG still being Primary.
Should I enable iGPU multi monitor?Enabling this option means you can use your iGPU for additional monitors. This only makes sense when you want to use more monitors than your primary GPU can support on its own. Additional monitors have basically no influence on your performance, unless you have a game running on multiple monitors at once.
Can I use 2 monitors on iGPU?First, go into device manager and check if there is integrated graphics drivers in there, alongside the dedicated GPU drivers. If you can see the integrated graphics driver, just plug in the second monitor and it should work. If there is no driver for Integrated, go into BIOS and enable the integrated graphics.
Can I use iGPU for gaming?To answer the question of if integrated graphics is good for gaming: no, it isn't.
What is iGPU setting?The iGPU stands for Integrated Graphics Processing Unit. That setting controls the amount of memory you give to the integrated graphics on your motherboard. Typically this can be values from 32MB to 512MB depending on the board.
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