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Question about ASUS A8N-SLI Premium Motherboard

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I install two videocards (6600gt) and i am having a hard time geting it to work.Every time i go to enable SLI tech.(Nvidia) and apply it goes back to to single videocard.please help.

Posted by EL CHINGON on

  • EL CHINGON Aug 16, 2007

    Thanks for reply.I did change the setting in bios to enable also changed to daul cards in asus a1 selector program.So when i go to the nvidia program it will not take the change.



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Hi, you will need to go in to your bios and also change your settings there otherwise the mother board will not recognise the second v/card. To get into the bios press the delete key several times at bootup this will allow you to change the settings you need, look in each setting page by scrolling down and pressing enter, read each entry and when you see the dual video make sure it is ENABLED, then go to the save and exit select Y and that should cure your problem. Regards mistyman

Posted on Aug 15, 2007


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I have an 8800Ultra in my Ga-M59SLI-S5 motherboard and it works great. I'm running windows 7 with 4 gigs of ram, a 3 gHz dual core AM2 6000+ and a 160Gig raptor. Now I have decided I need more Powaa so...

As far as i know you will need two identical VGA cards to make a SLI board, and you must connect them both with a special cable. After this you must enter to NVIDIA menus and make adjustments from there.

How many graphics cards can you run on this motherboard ? also whats the maximum ram you can install on it ?


You may install 2 x PCI-Express X 16 slot, supports two PCI-Express interface Graphics cards with SLI mode and 4x1Gb Dual channel DDR400/ 333/ 266 -184pin RAMs onto your AMD Gigabyte GA-K8N-SLI nVidia nForce4 SLI Chipset 2000MT/s FSB Dual Channel DDR400 Socket 939 ATX motherboard.

Check out your motherboard's specifications through this LINK.

I hope this works for you. Kindly reply/comment for further assistance. Good Luck!

Thanks for using Fixya!

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As per my concern if u want to replace & ugrade all the parts then u take a NVIDIA motherboard only because , the fx5500 videocard is of NVIDIA geforce company only thats why it will suit the motherboard itself & also nvidia provides 256MB onboard videocard so if u keep fx5500 videocard free it will be all right
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Make sure you have installed the latest Nvidia drivers. Get them from Nvidia's web site, not the included disk. Make sure "Enable SLI" is selected in Nvidia control panel. Re-seat both cards and the SLI bridge. BTW what Mobo do you have?

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reboot the computer and press F8, start in safe mode and unistall the graphics drivers using "device manager" reboot the pc and do a microsoft uptade to install the drivers for you
hope this helps

SLI Video Cards

Enter you're bios & open you're manual to page 4-32. Set you're
configuration to dual video card. Use the AL software to tweak you're settings in windows. If you find this not helpful than please call Asus tech at: 1-812-282-2787, M-F 8:00AM-5:00PM EST. Unlike other companies you will not be on the phone very long. Please have the S/N of the board handy. This is located on the board, on the LTP port (White sitcker).

Good Luck!

Video cards pci-e

Hi s _beukelman7, one of the most important spec's of running two SLI cards is they must be identical. Your trying to run a 8800 & a 7300. They are both NVIDIA **** they are not the same. They are different & will fail in your system. Pg. 6-2 in your mnual. Either buy another 8800 or another 7300 SLI card.
It is suggested you go to NVIDIA web site & allow NVIDIA to check both your two graphic cards & system for the latest drivers. If NVIDIA finds you need updated chipset drivers please (follow all instructions) or your will find yourself re-installing your OS.

The two most important item you need other than checking the above link, is the correct power supply. Your manual suggest a minimal of 500w psu when using a single SLI card. I suggest running a 550w for dual cards.
The second item concerns the SLI cable. It must be clean.

Good luck!


So it sounds like you are able to enable SLI mode, but once you do, you have no video output (upon reboot). The most likely problem is that it's now in SLI mode, but your monitor cable is hooked up to the wrong video card; try changing it to the other video card, and see if you have output from that one.
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