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use triple crossfire bridge for 2 7970s?

post #1 of 7
Thread Starter 
Hi guys. I have the asus p6x58d premium mobo. And im planning to go crossfire with 2 7970s. Problem is, i also have the Asus Xonar Essence ST sound card which goes into the pci slot. And going crossfire is going to block the only remaining slot. But if I plug the 2nd 7970 to the 3rd pcie, the pci slot would be accessible.

Is this possible?
post #2 of 7
Yes it should be fine I just checked with the manual and you want the two graphics cards in the top two PCIe x16 slots (the two dark blue ones) you can put the sound card in any of the PCIe slot.

PCIe X16 is down compatible so you can put a x1 sound card in the x16 slot, even though it doesn't fill up the whole slot it will still work so put the two 7970's in the two dark blue x16 slots and you can put the sound card in the white one at the bottom

hope that helps thumb.gif
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post #3 of 7
Quote:
Originally Posted by mike.dp.05 View Post

Hi guys. I have the asus p6x58d premium mobo. And im planning to go crossfire with 2 7970s. Problem is, i also have the Asus Xonar Essence ST sound card which goes into the pci slot. And going crossfire is going to block the only remaining slot. But if I plug the 2nd 7970 to the 3rd pcie, the pci slot would be accessible.

Is this possible?

Yea you can use the other slot, but I think your cards would run at a slower bus speed. I'm not totally sure though.
post #4 of 7
Thread Starter 
Quote:
Originally Posted by Stickeelion View Post

Yes it should be fine I just checked with the manual and you want the two graphics cards in the top two PCIe x16 slots (the two dark blue ones) you can put the sound card in any of the PCIe slot.

PCIe X16 is down compatible so you can put a x1 sound card in the x16 slot, even though it doesn't fill up the whole slot it will still work so put the two 7970's in the two dark blue x16 slots and you can put the sound card in the white one at the bottom

hope that helps thumb.gif

Well, the problem is my soundcard is the PCI version. Which I need to put on those slots covered by a dual slot GPU. Can I use the top most pcie and the lowest pcie for my crossfire, skipping the middle black one?
post #5 of 7
ahh sure I thought it was the PCIe version, having that would solve your problem. anyway the manual wasn't clear but I found this thread http://www.overclockers.com/forums/showthread.php?t=647094. Long story short one of the guys on that forum talked to ASUS and they said that when you use just slot 1 and slot 3 the PCIe slots will run x16,x0,x1 so you can't use the first and last PCIe for dual crossfire (only triple).

I have 4 possible solutions that may help
1) watercool your cards then they only take up one slot not two but that is expensive.
2) get a PCIe to PCI adaptor like this here
this may require some modding to your case PCI holder to make it look ok
3) get a PCIe x16 Extension cable like this one here and then you'll need to find a way to mount it maybe on the random extra pci holder that some cases have.
4) get a new sound card or just not use it, I find that unless you are using the best speakers money can buy it doesn't make much of a difference with a sound card or not.

personally I would go with option 1 or 4 as they would look the neatest.
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post #6 of 7
Thread Starter 
Quote:
Originally Posted by Stickeelion View Post

ahh sure I thought it was the PCIe version, having that would solve your problem. anyway the manual wasn't clear but I found this thread http://www.overclockers.com/forums/showthread.php?t=647094. Long story short one of the guys on that forum talked to ASUS and they said that when you use just slot 1 and slot 3 the PCIe slots will run x16,x0,x1 so you can't use the first and last PCIe for dual crossfire (only triple).

I have 4 possible solutions that may help
1) watercool your cards then they only take up one slot not two but that is expensive.
2) get a PCIe to PCI adaptor like this here
this may require some modding to your case PCI holder to make it look ok
3) get a PCIe x16 Extension cable like this one here and then you'll need to find a way to mount it maybe on the random extra pci holder that some cases have.
4) get a new sound card or just not use it, I find that unless you are using the best speakers money can buy it doesn't make much of a difference with a sound card or not.

personally I would go with option 1 or 4 as they would look the neatest.

Wow. Thanks for the time explaining the options. I also thought about it that I'm just going to sell my sound card. If I would sell it, where else is it good to put the money on?
post #7 of 7
hmm I guess that depends on what you've already got, since you will be running two cards you can use 3 monitors for gaming so maybe a new monitor, you could also go for a hard drive or an SSD or some new RAM. anything really that you think could do with some improving. you could even get started in watercooling if you want to add to the money you get from selling your card

edit: sorry I just saw your sig rig already has 3 monitors.
Edited by Stickeelion - 3/21/13 at 4:54pm
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G.Skill Ripjaws-X DDR3 32GB 1600MHz Samsung 840 EVO 250GB SSD Western Digital Green 2Tb Custom Loop 
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