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790GX possibly uses both PCIE for X16

post #1 of 12
Thread Starter 
I was just reading the manual on my Biostar 790GX and something has got me confused(which isn't hard). From what I gather I can use my graphics card in either PCIEX16 as long as I use the DCCFX-P2 in the other slot? Does anybody have this manual and can tell me if this true or not? If it's true I can free up some space for my TV tuner. How can I tell if I'm running the full X16? Thanks
LL
Edited by GuilT1 - 2/18/09 at 6:30am
post #2 of 12
Well, as long as you put the card in the Primary PCIe slot (the first slot on your board) you will be running PCIe x16

You can also download GPUz to check.

And as a further note. You card does not need the full bandwidth of PCIe x16.
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post #3 of 12
Thread Starter 
Does it look like I can use either slot as long as I put the little paddle card the in the other slot?
post #4 of 12
Quote:
Originally Posted by GuilT1 View Post
Does it look like I can use either slot as long as I put the little paddle card the in the other slot?
Yes, as normally they have both channels active in 8x8 mode, when you put the card in (just like my current sig rig mobo) it re-routes the channel 1 into a x16 bandwidth instead of an 8x.
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post #5 of 12
Let me get this straight. I have to put DCCFX-P2 in slot 2 for Slot 1 to be in full 16x?




post #6 of 12
uh.. no 2 is 1 and 1 is two so put it in 2
    
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post #7 of 12
Ive tried this. That card HAS to be in the top slot, unless you are running crossfire.

But that was a couple bios updates ago, may have changed.
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post #8 of 12
Quote:
Originally Posted by I AM TEH LAW GIVAH View Post
uh.. no 2 is 1 and 1 is two so put it in 2
The top PCI E slot is the slave on this board....


Shi-, double post.
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post #9 of 12
Quote:
Originally Posted by Pings View Post
Let me get this straight. I have to put DCCFX-P2 in slot 2 for Slot 1 to be in full 16x?




Look at the HUGE writing by each of the slots
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post #10 of 12
Quote:
Originally Posted by I AM TEH LAW GIVAH View Post
uh.. no 2 is 1 and 1 is two so put it in 2
No read what it says, it the other way around on this board. The Image with the red and white labels are correct, and you can even see the master and slave writing next to the slots.










• Put DCCFX-P2,
• In PEX12_2 (Slot 2/Slave).
• Put GFX card,
• In PEX12_1 (Slot 1.Master).

I put my 4870X2 in Slot 2, and it raised my CPU temp 10 degrees. I have had it in Slot 1 ever since. Come to find out later that is the correct slot. Yea I know the positioning of Slot 1 and 2 are confusing.
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