Running 2 GPUs - Possible?

BananaMann · 31 Jan 2014

Friends issue:

Hello!

I bought an asus r9 270x to replace my old Connect 3d ati radeon 4890. My problem is I have two monitors that can be connected via vga only and the 270x has only one dvi port that can be used with a vga-to-dvi adapter. So, I have connected one monitor but I don't know what to do with the other one. As a result, I thought I should buy a vga-to-displayport adapter, but before doing this, I believed I should try to use both of them, not on crossfire.

What I am facing now is I have two cards installed on the pc, both of them ready to work with their drivers installed but they can't perform at the same time. Right now I am using the r9 270x and when I try to install the drivers of 4890, the device manager states that r9 270x has a problem so the os disabled it. If I install the drivers of r9 270x again, same thing happens to the 4890.

What can I do so they can work together?

Britton30 · 31 Jan 2014

Hi there,

All of the r9-270's I see have 2 DVI ports, why can't a DVI/VGA adapter be used on both?

I may be wrong, but I think two cards have to be setup with Crossfire/SLI to use both.

ShamrockRig · 31 Jan 2014

If im correct in saying you can only pair two of the same cards?

Britton30 · 31 Jan 2014

Devlin1888 said:

If im correct in saying you can only pair two of the same cards?

No, just that XFire is need to make them both operate.

ShamrockRig · 31 Jan 2014

AH okay, i thought they had to be the same with the exception of APU+GPU , learn something new everyday eh, so simply using the crossfire bridge would enable it to run fine?

Britton30 · 31 Jan 2014

Britton30 said:

Hi there,

All of the r9-270's I see have 2 DVI ports, why can't a DVI/VGA adapter be used on both?

I may be wrong, but I think two cards have to be setup with Crossfire/SLI to use both.

Devlin1888 said:

AH okay, i thought they had to be the same with the exception of APU+GPU , learn something new everyday eh, so simply using the crossfire bridge would enable it to run fine?

I think there is software to install too, I've never used multiple GPUs.

ShamrockRig · 31 Jan 2014

Im running dual graphics apu+gpu, all thats required is the usual catalyst control centre and obviously the drivers

BananaMann · 01 Feb 2014

Sorry, what should I do again? Not sure if those posts were aimed at me.

Thanks

Jezuz · 01 Feb 2014

You need to setup your Video cards in CrossfireX/SLI to make sure you can use them both.(cards should be the same model)
Then install the drivers and Catalyst Control Centre from AMD.
Good Luck!

Ivan the SoSo · 01 Feb 2014

You can't crossfire a 4890 with a R9 270X.....