Anyone running Tri/Quad Crossfire in Vista...

[HeX]

Does your GPU-Z say Crossfire enabled?

I've just put a 3rd GPU in and I don't think Crossfire is working.

I can see the card in GPU-Z and in Device Manager, but the card isn't shown in CCC, however there is an 'Enable Crossfire' button...

 

[Mud]

If all goes according to plan and no one's answered you by tomorrow I'll let you know

Meanwhile, couldn't you just bench to gauge performance?

 

[HeX]

Have done, and tbh it doesn't look like it is enabled, seems to be same as before...

It's all rather odd....

 

[Jokester]

You should be able to tell if it's working if you run 3dmark03.

 

[Smirnoff]

CPUZ doesnt see that Tri or Quad SLI is enabled

 

[WJA96]

If you drop down the dropdown box in CCC you should see each card listed twice - in my case I get X1950Pro and X1950Pro Secondary. You should see the third card listed as the Tertiary card. I can't remember why each card is listed twice, but there was a fairly simple reason for it.

 

[PinkFloyd]

I can't remember why each card is listed twice, but there was a fairly simple reason for it.

Each DVI port perhaps?
Can remember the old omega drivers always had to tick a certain box twice when installing. Could be something completely different though!

 

[HeX]

This is what I have in GPU-Z

However in CCC:

 

[WJA96]

Each DVI port perhaps?

That's the one!

 

[WJA96]

This is what I have in GPU-Z... SNIP...

If you untick the CrossfireX, what do you see?

It's pretty informative usually - mine said I had the crossfire connectors round the wrong way(!) until I swapped one over, then it worked fine, but as I say, that was only with two cards.

 

[HeX]

Shows nothing at all.

Just done a 3dm03 test:

http://service.futuremark.com/compare?2k3=5776045

72118

 

[ins0mn1ac]

Shows nothing at all.

Just done a 3dm03 test:

http://service.futuremark.com/compare?2k3=5776045

72118

03

 

[HeX]

03

someone said to do 03 further up to test.

 

[Jokester]

03 is the least CPU dependent 3dmark so it should clearly show an improvement when using CrossfireX.

 

[HeX]

I don't think 72k is all that impressive tbh...

Its quite strange. I've just fired up CoD4, and while the FPS Fraps is displaying is higher than what I was getting before the game feels slower and jerkier...

Same with the Crysis bench...

 

[gt_junkie]

Strange that FPS are up but it's jerky!

Driver's still not mature enough?

Very interested to see if you get this sorted HeX as i'm tempted to add a single 3870 or even another X2 if their price drops a little more.

gt

 

[HeX]

Ok just removed the crossfire bridge to see what CCC and other utils would see.

CCC still only see's the X2, but reports that the bridge isn't connected properly, so it must be seeing the other card on some level.

Rivatuner now sees both cards (whereas before it only saw the X2).

GPU-Z reports the same as before, 3 devices, crossfire disabled.

 

[HeX]

OK, after some more testing I can confirm I was talking bobbins earlier on.

CoD4 is actually considerably lower FPS than with crossfire disabled.

X2 alone no Crossfire = ~75-95 fps on a busy server

X2 + XT with Crossfire = ~50-70 fps on a busy server

(same server, same map)

So something clearly isn't working as it is supposed to!

 

[dC2006]

I am experiencing similar results, with out xfire I see smoother gameplay in cod4, crysis. With it enabled, the fps drops by about 20%. I was thinking maybe because I am running 16x/4x xfire which is causing the problem ? The other thing I was wondering about was the x2 only has one crossfire connector, whereas the 3870 has 2, I have read that some people are using two bridges.

 

[HeX]

I'm begining to think crossfiring the x2 to a card in the 4x slot is somehow holding it back, either that or the drivers really arn't optimised for crossfireX use on the P35 chipset.

I'll have annother play tommorow and see if I can get it going, if not back to the X2 I go.