HD4870 CrossfireX trouble

[melkhior]

Hi,

About a month ago I bought a 4870 second-hand to make a Crossfire. At the time I received it I tried to verify it works correctly. It worked and saved because at that time I didn't have much time to do tests with the Crossfire.

Now I have started to test and it does not work correctly. I can not say what exactly happens. Windows 7, HWiNFO32 and GPU-Z recognizes it, but they doesn't give the correct information about it. I tried it alone but it doesn't give video signal.

This is what shows the GPU-z:

http://www.techpowerup.com/gpuz/3sshq/

And this is what shows on my main GPU:

http://www.techpowerup.com/gpuz/ncnmv/

Is there any explanation for this? I can not understand why this happens.

Thanks in advance

 

[brandonwh64]

Does it get better FPS in benches than a single card? post a crossfire and single card 3dmark06 please

 

[melkhior]

I didn't tried, but in fact, I can't enable in any place xD

I will try 3D Mark 06.

Thanks

 

[brandonwh64]

So your saying that when you are in ATI CCC that you can not enable crossfire?

 

[melkhior]

Exactly. I can't enable in any place.

Also, if I conect the second card alone it doesn't give me any video signal.

 

[brandonwh64]

Then sounds like one of the cards are dead. try the card that doesnt give you signal in another machine, if it doesnt post there then the card is most likely dead

 

[melkhior]

Well, the problem has gone.

I dismounted everything. I also changed the positions of the GPUs because the setsugen seems to not like the crossfire sandwich.

In some benchmarks I almost doubled the results. So for 40€ including shipping I improve the FPS and I can wait better until the next GPU generation