ATI Crossfire not working properly

What resolution do you play at?

With that CPU you wont see much improvement over on 4870 1gig at anything less than 1920*1200 with eye candy set quite high. (AA and the like)

Your PSU shoudl be enough power.. though it might be pushing it depending on how you ahve the cards connected.

Depends on the game, you would maybe see 20% improvement int eh best of situations with crysis...

With that CPU single didget scaling in most games wouldnt be out of the question.

Going the 3ghz should give you substantial gains.

You can easily determine if your CPU is maxed out by playing a game and running the Task manager in the backgroun (CTRL-ALT-DEL).

Play for at least 5 minutes, then stop the game and see your recent CPU history.

If your CPU or at least part of it is completely maxed out it's your CPU. If it's NOT then it's another problem.

Personally I would have thought you'd see performance in some games.

You can also try comparing with no AA at all to see what that does.

I ran in to the a similar problem when I sat up xfire, didn't see a performance gain in my games and eventually found out I wasn't using xfire at all. There are some things that you can do to make sure you are using xfire.

First, go into your system tray CCC icon and enable the ATI xfirex symbol so you actually know if it is kicking in or not. That will get rid of any doubt if it is actually running or not. When you start a 3D app, you should see the ATI symbol in the upper right corner of your screen. A second way to check is to benchmark with 3DMark06. You should see a healthy bump in your score when 2 GPUs are in play (and the ATI symbol if you enable it...two birds with one stone).

Second, you have to have two things selected in CCC to have xfire work. The first is obvious, under Crossfirex settings, enable it. The next is usually not too clear. In the 3D settings you have to have Catalyst AI enabled. Set the slider to standard.

I would also remove ALL video drivers (NV, ATI, Intel...ect...ect..) through add/remove programs, restart, delete ALL ATI, NV folders and then reinstall 9.4 freshly. Sometimes installing ATI drivers over one another or after having NV drivers doesn't work out the best.

This should help you get started!

No, it isn't really information that is out there and it isn't enabled by default. They announced the option when it first appeared in one of the driver updates a while back.

If you right click on your Control Center tray icon, and mouse over your first graphics card, you will find it in the crossfirex option.