I've been using a HD4870 for a couple of years now and felt the need to upgrade to a newer model. Did some research and came to the conclusion that it had to be a HD7950. So I purchased one a few days ago.
Unfortunately both of my monitors have a DVI connection and I also sometimes need a S-video connection for my (yes i know, outdated) tv. Already having a HD4870 with 2 DVI connections and a S-video connection I thought I wouldn't have a thing to worry about. I wouldn't replace my HD4870 but use both.
So I installed my HD7950 in a emty PCIe slot and booted the computer. Windows told me it had hound new hardware and needed tot reboot. After the reboot windows again told me it had to reboot. So I rebooted the computer. And again it told me to reboot, so i figured there was something wrong with the driver and deinstalled the driver and rebooted. And yes both cards wer wording using the standard windows drivers.
I then installed the latest Catalyst (13.1) and rebooted the computer and found out that the HD4870 wasn't working anymore. Windows reported fault code: 43 (something is wrong with the driver. So I thought I also needed to install the latest Legacy Catalyst.
Now both cards now kind of work. But aren't reported correctly in Catalyst. Also some games and program's won't start.
My question is: how can make both cards properly work?