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BFG 680i: Only Detects Two Video Cards

Forum Motherboards & Memory : General Motherboard - BFG 680i: Only Detects Two Video Cards

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tsilb   09-02-2008 at 10:34:58 AM

There was a time when I had an EVGA 680i mobo. It was a good time. I had my three ATI Radeon X1650's installed and running my six monitors beautifully. For reasons beyond my control, I had to switch to a BFG 680i board. Since I switched, only two of the X1650's are detected.

I am told the third PCI-Express x16 slot only supports x8 pathways; does that mean it doesn't have enough power to supply the card? Is there any other reason the third card is not detected? It's a known-good card.

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auscanzukus   09-02-2008 at 02:26:53 PM
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No, x16 gpu in x8 will run at x8 and that's it. It'll show up. My guess is your board is designed for SLI. I'm aware that you're not crossfiring.

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knowsitall   09-02-2008 at 03:51:16 PM
- 0 +

yea.. sounds like your trying to run crossfire on a sli motherboard?? probably wont work since both companies are arch rivals.

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techgeek   09-02-2008 at 04:49:50 PM
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He is not trying to run CrossFire, he is trying to drive 6 monitors.

To the OP, it should work in X8 mode, it should work in X1 mode albiet very slow. Is there a setting in the BIOS of that board that enables/disables the 3rd slot, or reserves X16 for the second slot (which would in affect shut down the 3rd slot)?

------------------------------ Don't go away mad, just go away!
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tsilb   09-03-2008 at 01:14:30 AM
- 0 +

none that I can see; but yes, I'm trying to drive six monitors.

Any idea what this option would be labeled?

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