Crossfire question

[BTRY B 529th FA BN]

Can a crossfire bridge be broken? Reason why I ask is because my order for a 100mm ATI bridge just came in today and I installed it onto the cards and when I used the CCC to manually set the fan speed, the top card fan speed changes but the bottom one doesn't. Also, there are kinks in the bridge that might of broke the link wires.

 

[dust]

I may be wrong, but as long as you see the second card in the ccc and no warning has been issued, your bridge works. It happened to me also a couple of times but it got fixed by itself at the next boot. If i recall correctly it was after upgrading the driver/ccc suite.

 

[BTRY B 529th FA BN]

I think I may try reinstalling the drivers. Also, I've noticed the primary card is running at x8 while the linked adapter is running at x16...

 

[BTRY B 529th FA BN]

Re-installed drivers and it didn't work.

 

[BTRY B 529th FA BN]

Figured that the primary adapter was set to x8 because I had a PCI-e sound card between the two cards. I took it out and now both are running PCI-E 2.0 X16

Still haven't figured out why the fan control doesn't control both. When I initially had both cards in this config:


it worked.

 

[jaggerwild]

Figured that the primary adapter was set to x8 because I had a PCI-e sound card between the two cards. I took it out and now both are running PCI-E 2.0 X16

Still haven't figured out why the fan control doesn't control both. When I initially had both cards in this config:


it worked.

In CCC do you manually set the second fan to what you need, as you can open it right next to the lock/unlock sign in overdrive. I'm sure you know, I had to offer it though....my second fan will not go up untill i open something that is taxing on my video cards like BFBC2 they it ramps up.

 

[dust]

Well, I would switch the cards to the previous position then, only with the new bridge this time, just to rule out it being defective or not.

 

[BTRY B 529th FA BN]

@ Jagg, yes, I unlock the overclocking feature and just use the manual speed controller.

@ Driven, I might try to do a full drive sweeper uninstall first before I move the cards around. I'm thinking its a driver thing. If that fails, i might try to reconfig them like before to test the bridge but what makes me think it isn't the bridge is the CCC recognized the second card as the "adapter link" er something like that.

 

[MrK6]

I believe what you're seeing is PowerPlay at work. The second card in a CF system is "shut down" when in 2D mode to conserve as much power as possible, and yes, the fan controls don't apply to it. The minute you enter some kind of taxing application, the fan will kick in to whatever you previously set it to. This is how my 5850 CF works with both CCC and Afterburner fan control.

 

[Apocalypse23]

From my experience, Crossifre fan controlling will only work on the first PCI-E slot card, the rest of the cards will run on Auto.

 

[BTRY B 529th FA BN]

Ahh, apparently the "Linked Adapter" will kick in on 3d apps. I tested for this using Furmark and like said above, the second cards fan kicks in at the manually specified fan-speed %

Thanks everyone

529th

 

[VirtualLarry]

In CCC's "information" page, is the second adaptor listed as "disabled", when CF is enable?

 

[BTRY B 529th FA BN]

In CCC's "information" page, is the second adaptor listed as "disabled", when CF is enable?

Not exactly. I think as described above the card is 90% turned off. The fan does spin at around 20% ...but it's not listed as disabled in the "Information center" under "Graphics Hardware"

 

[dust]

I am able to set the speed as I like for both the cards, idle or load and this whole thingy seems out of place. As I understand from here this feature is disabled on 5xxx series?! I would certainly like to have control over this issue.

While on auto, the ccc seems happy with a 17-26% speed for the fan whilst the temp reach 42-50c at idle (both cards considered), however I'm not at all comfortable with that. I'd rather keep them at a steady 45% regardless of the load.

Since you said there was no such problem with the cards being in other slots before, I'd start by verifying that theory.

 

[lavaheadache]

I believe what you're seeing is PowerPlay at work. The second card in a CF system is "shut down" when in 2D mode to conserve as much power as possible, and yes, the fan controls don't apply to it. The minute you enter some kind of taxing application, the fan will kick in to whatever you previously set it to. This is how my 5850 CF works with both CCC and Afterburner fan control.

as I was about to reply to this thread with this response i noticed you already stated it.

 

[evolucion8]

From my experience, Crossifre fan controlling will only work on the first PCI-E slot card, the rest of the cards will run on Auto.

That's odd. With my Crossfire setup, I can manually control both fans, and both cards are from different vendors. I just go to the Overdrive Tab, unlock it, and select the "Select the GPU to configure" tab and then I can manually adjust the fan if needed. But may be with the HD 5x00 series is another story.

 

[BTRY B 529th FA BN]

Yes, you can adjust each individual card's fan speed. Profiles manager also works so you can run a desktop 'quiet' speed, and then run a 'gaming' speed.