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Crossfire X Help

P

pyrogx2000

Limp Gawd
Joined
Dec 18, 2001
Messages
176
I just formatted Windows Vista x64

had recently added a second Radeon HD 4870 1GB.
Both cards are the same model and clocks, just diffrent brands.
Hooked up the double crossfire bridges.
Installed the catalyst 8.12 Drivers.
(Update: Does not work with 8.11)
(Update: Does not work with 8.10)

Theres no bios option for crossfire x, but a gigabyte EP45-DS3R (Bios F8) says it has the support to use it.

Bios F9/F10 don't mention fixing crossfire.


Under the Crossfire X Diagnostic, it only identifies the first card.
The only thing I can think of is, in the bios, I have PEG as init display first, but probably has nothing to do with this.

Under pulldown menus, I can only see one Radeon 4800 card.

Rivatuner sees 2 cards and displays temps etc.
Running a game, Only the first card is running.
Can anyone help tell me what I'm doing wrong?

43882801mq9.jpg
 
I had a similair problem with my 4850, not sure if its gonna work in your case, but it did in mine.
enabled AI - advance
In Device Manager:
disable secondary card. then delete the primary card (keep existing drivers). scan for hardware change - restart - then re-enable the secondary card - restart, then CCC detected the crossfire.
 
Try to use the 8.12 Hotfix drivers from AMD. It supposedly helps out with 4850's problem of either BSOD when booting up or having the second video card being recognized as turned off by default. It may just help with the x-fire problem with the 4870's.
 
your screen shot shows that cf is available. i don't understand what the problem is. you do realize that with only one card, catalyst would not display the cf pane, right?
 
While this is true, I have enabled Crossfire X in the Crossfire tab.

Normally I'd just accept that the second card is working.
However I'm using Rivatuner and it shows the secondary GPU using 0% under any type of load (a game). The temperature of the main GPU goes up while the second one stays constant. I'm watching it on my G15. This should be proof enough that the second card is doing nothing. Also when I identify gpu in the CCC, all I see is a giant '1'. Shouldn't I see a 1 and a 2? This isn't a monitor identification, it's a GPU identification. This seems to be poorly implemented. I'm not convinced this is working. Please help :)

Yes I tried the 4850 hotfix.
Yes I tried the other hotfix.
Neither did anything.
Neither did the 8.11 or 8.10 drivers.
I spent a day trying every option available. The obvious steps were the first ones I tried.

The only thing I haven't tried is the thing suggested in the device manager with deleting. I am going to try this but-- why is this even necessary? I formatted windows. Brand new. Why should I need to disable or delete any drivers to get this to work?? It should work right away, especially if ATI has any QA testing...

Also, the pulldown menu does not show a second adapter ANYWHERE except for ATi Overdrive tab.

Thanks for the previous suggestions as well.
 
Are you sure your monitoring it correctly in riva? I used riva to monitor mine and the drop down menu there gave me three options, my secondary card being the 3rd at the bottom. Also, try using GPU-Z as well.
 
with cf enabled the only place where you know it detects 2 video cards is in the overdrive pane where it allows you to overclock and adjust fan speed individually. if you have one monitor plugged in it will display 1 for the primary monitor the video signal is going to. disable cf, play a game, re-enable cf, try the game again. no brainer.
 
Doesn't the GPU1 temp denote whether its being used even if I picked the wrong gpu1 adapter from the list? It has 2 entries for each gpu.

Why doesn't the CCC have any information about my crossfire setup? In that window?
Why doesn't it identify 2 GPU's?
Can anyone confirm that if you hit the identify button on a working crossfire setup, that it will show a '1' and a '2'?

I'm not yet ready to take the 2nd card back outta the box yet till I hear a convincing argument that I've missed something here. Although I suppose I may have not picked the right 'gpu1' for the 2nd card, but temperature is temperature, isnt it? It never fluctuated beyond 1 or 2 degrees!
 
rennyf77 said:
with cf enabled the only place where you know it detects 2 video cards is in the overdrive pane where it allows you to overclock and adjust fan speed individually. if you have one monitor plugged in it will display 1 for the primary monitor the video signal is going to. disable cf, play a game, re-enable cf, try the game again. no brainer.
Click to expand...

Here is some good info. I DO see the 2nd card in the overdrive setup.
I will give this a try!
Before I try though, what is the best way to see if the second GPU is actually working in a game? Other than Rivatuner...
 
Hey, thank you guys for the help!

I got crossfire to work!
Apparently there were some messed up fan profiles, and Rivatuner was incorrectly displaying the 2nd GPU usage.

After I properly set this up, both GPU will show the same % load in a game!!
It's all working now.
 
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