Second 6950 is not detected by device manager.

I need this question answered????

sygnus21 said:

The other question - have you did a BIOS update???

Thanks

Yes there is this msi liveupdate 5 thing, it scanned my hardware and i had 1.2 bios and i updated it to 1.5 now.

OmieeGAF said:

Yes there is this msi liveupdate 5 thing, it scanned my hardware and i had 1.2 bios and i updated it to 1.5 now.

Now - as in just now????

Anyways, on page 2.23 of your manual.....

The mainboard can auto detect the CrossFireXTM mode by software, therefore you don’t have to enable the CrossFireXTM in BIOS by yourself.

So that means you don't need any BIOS tweaks. That's good.

How many "video links" are you using? Try using two. If using two, try using one.

Check that both cards are connected to a power source in addition to the video links.

If you've done all of this you "may" have an issue where your power supply isn't supplying enough power to both cards.

Also a 6950 requires a 6-pin power connector. To do crossfire you need two 6-pin conncetors - one for each card

Let me know.

The ati site recommends 4 x 6 pin 75w power connections 2 x 6 pin 75w per card and only 1 crossfireX bridge, his psu has that support as well so it shouldn't be the problem of power, unless his psu has a fault and isn't supplying enough power to the 12v rails.

gazz9496 said:

The ati site recommends 4 x 6 pin 75w power connections 2 x 6 pin 75w per card and only 1 crossfireX bridge, his psu has that support as well so it shouldn't be the problem of power, unless his psu has a fault and isn't supplying enough power to the 12v rails.

You are correct. And I actually have one (a 6950)

So yes, you need 4 6-pin connectors - 2 per card.

gazz9496 said:

unless his psu has a fault and isn't supplying enough power to the 12v rails.

That's the point

And though I agree that he should only use one bridge..... there should also be no reason that his crossfire shouldn't be working.... yet here we are

So i tried using 2 crossfire bridges like you said, and no result. And both cards are connected by 2 6 pin cables. 2 cables coming from modular side of the psu and two other cables who come within the psu ( sorry for the vague explanation English is not my first language)
So if its not the bios it has to be the switch that does it automaticaly is either broken or not functioning well.
Any other trouble shooting techniques i could use.

OmieeGAF said:

So i tried using 2 crossfire bridges like you said, and no result. And both cards are connected by 2 6 pin cables. 2 cables coming from modular side of the psu and two other cables who come within the psu ( sorry for the vague explanation English is not my first language)
So if its not the bios it has to be the switch that does it automaticaly is either broken or not functioning well.
Any other trouble shooting techniques i could use.

Have you checked to make sure both set of connectors are getting power. Just install one card that try both set of power connectors to see that they are working.

Other than that I would suggest you give MSI a call or visit a support forum. Sounds like you're doing everything you're supposed to. Why it isn't working is beyond me. It could actually be a problem with the board.

BTW this is what my system looked like when I had a chance to play with crossfire...



And yes, both cards should show up in Device manager.

Good luck.

i tried everything, at this point im thinking about just selling my board and getting a new one.

If the board is still under warranty why not have is checked out? Have you even done what I suggested - calling tech support???

the board is 6 months old so it should still have warranty.
i emailed msi contact support all they said was, did u hook it up to a powersupply, did you try putting a card alone in the top spot.
if that does not work you may have to go to the shop were you bought it.