Display won't show proper resolution

[Donma]

I just installed a new XFX Double D FX-795A-TDJC Radeon HD 7950 3GBCard and my 30" Dell 3007wpf won't show any thing more than 1200/800 resolution.
I have reloaded the Catalyst drivers and Windows 7 update drivers for the monitor to no avail. Dell doesn't have anything on their Web Site and the original install disk doesn't recognize the monitor.
Any suggestions? Thanks for looking.

 

[KingFatty]

That resolution is due to a limitation in single-link connections. You may be using a single-link cable, or HDMI, or the single-link port on your video card. Any of those would limit you to those resolutions.

To go to native resolution, use a dual-link connection. First verify you are using a dual-link DVI cable (or displayport etc.). Then, if you are using a dual-link DVI cable, verify you are using the dual-link DVI port of the video card. Your card says:
2 x DVI (1 Single Link, 1 Dual Link), so maybe you are using the single instead of the double.

 

[Donma]

You were right on the money. I didn't know there was a difference. DVI-D dual link
cable fixed it.
I sincerely thank you for the help.