Why is my screen much smaller with the R9 290, than with my 7870BE crossfire?

Downblitzkrieg81 · Jun 8, 2014

Running-
16 GB Ram
1200 Watt PSU
8350 8 Core processor

This is my second R9 290 from XFX, with the same issue, I RMA'ed the last one because I thought it was defective, now I'm starting to think this is just how it is.

I'm using the ASUS 27 inch Digital Flat panel, but the card seems to be cutting out about 2 inches on all sides. Iv tried to change this in both CCC and the display properties, I'm being told that 1920x1080 is the highest I can go. I'm using an HDMI cord to my monitor, and I see that its set up as 1080p, not sure how people are getting 1480i in the settings, seeing that's not even an option.
Iv had no issue with my 7870 XFX BE's, everything fit perfectly on my screen.

Someone Somewhere · Jun 8, 2014

Generally HDMI doesn't work nicely with >1080p. You can set custom resolutions to force it to 1440p, which is probably what you did with the old card.

It's usually easier to just grab the DVI-D DL cable that would have come with the screen, though.

Downblitzkrieg81 · Jun 8, 2014

The odd part about that is this monitor does not have ANY DVI ports, just and HDMI, VGA and a odd looking HDMI insert with one side kind of blocked off. I bought this monitor at the end of last year. It did however come with a few cords I'm going to try now.

Someone Somewhere · Jun 8, 2014

That would be displayport. Also good for QHD.

Downblitzkrieg81 · Jun 8, 2014

Looks like I'm off to Micro Center, Id rather order online but I cant wait to see results as we all impatient with our rigs! Before I leave, should I be looking for a DVI to HDMI, or the one you just talked about? Display port? The 290 has one HDMI, two DVI and the odd looking HDMI port..

Someone Somewhere · Jun 8, 2014

What's the exact model of the screen?

You probably want a Displayport to Displayport cable.

CGurrell · Jun 8, 2014

It could simply be a scaling issue (there's a specific word that escapes me atm) you can change it in CCC

Downblitzkrieg81 · Jun 8, 2014

CGurrell :

If is Overscan, that's not it.. iv tried it all. At least I think I have.

Downblitzkrieg81 · Jun 8, 2014

VN279

Downblitzkrieg81 · Jun 8, 2014

any thoughts? I'm heading out going to get a few cables

CGurrell · Jun 8, 2014

Yeah overscan is what I'm thinking of, just double check it again, it's not easy to find in CCC

Downblitzkrieg81 · Jun 8, 2014

I found out that the Displayport to Displayport cable corrected the issue. I thank you very much for taking time to help me figure this out. In an attempt to learn something today, why did this cable work over the HDMI?

CGurrell · Jun 8, 2014

Downblitzkrieg81 :

Basically, the GPU assumes when you use HDMI that the monitor you are connecting to is a TV, therefore forcing an overscan to make sure everything fits onto the screen. Displayport is only available on PC monitors, so it doesn't assume that your monitor is a TV and, therefore, doeesn't force overscan

Someone Somewhere · Jun 8, 2014

I suppose the GPU could be compensating for a TV overscan (which would mean the GPU is doing an underscan).

Haven't seen that happen, yet.

CGurrell · Jun 8, 2014

Someone Somewhere :

happened with my 280x and BenQ GW2265, had to use CCC to fix it

Someone Somewhere · Jun 8, 2014

Hmm. I don't have any GCN cards to test, but the 6570 in my HTPC didn't need anything changed - once you set the TV to 1:1, everything was perfect.

Downblitzkrieg81 · Jun 10, 2014

Thanks for the reply's! Makes sense now, I tried to see if my monitor even had the option to change a ratio 1:1, but I had no luck. It's working great with the display port cord now.

Why is my screen much smaller with the R9 290, than with my 7870BE crossfire?

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