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Cant get 8800GT SLI to work

Last response: in Graphics & Displays
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June 18, 2008 12:33:18 PM

These Questions have most likly been ask many times so heres my stick onto the fire

ok first here is my set up

MotherBoard: GA M55sli - S4
CPU: AM2 5800 + 2.8Ghz
Sound Card: On board
Hard Drive: 500Gb
GPU: 2 x 8800GT's 1 is gigabyte 1 is generic (EliteGroup)
PSU: Coolermaster 650W

ok i have been trying to get this thing working for the passt week with no luck
i have installed the 2nd card but it has not poped up in my device manager i have tried each card one at a time and they are both working
i have reinstall the lastest drivers for both my video cards and motherboard. i think my powersupply is powerfull enof and i have checked there doesnt seem to be any setting in the bios to activate SLI and theres no switches on the motherboard itself

anyideas :??: 

Cheers

More about : 8800gt sli work

June 18, 2008 12:46:44 PM

Do you have an additional molex power plug connected to the molex power connector on your motherboard above the 1st video card and the processor? (you have to have this when you run two cards)

Check the bridge connector and make sure its correctly seated between the two video cards.

There is a setting that you go into to "enable SLI". Go to your control panel, then Nvidia control panel and then "set SLI configuration" and make sure SLI is enabled.

I had that board and it worked great.
June 18, 2008 1:25:54 PM

yep thx i pluged that in thou it didnt have any effect its still not detecting the 2nd card thx anyway :( 
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September 10, 2008 12:04:31 AM

You need to change all of the jumpers (4-pin blocks) betweeen the 2 X16 PCI-e slots. I think there are 2 long rows and 4 short rows. By default the board comes in a single card configuration and will not recognize the other card until you make the change to those jumpers. Be careful though as I had many of the actual metal portions of the jumpers remaining stuck to the board after the block was removed! Tedious but in the end worth it.
September 10, 2008 8:12:23 AM

hey, never having tried SLI before, but hoping to at some point in the near future, does it matter which end of the bridge is connect to which card?
September 10, 2008 12:08:47 PM

V3NOM said:
hey, never having tried SLI before, but hoping to at some point in the near future, does it matter which end of the bridge is connect to which card?

Yes it matters.
a c 172 Î Nvidia
a b V Motherboard
September 10, 2008 5:02:44 PM

yetyhunter said:
Yes it matters.

Provide some proof please.
September 11, 2008 7:02:38 AM

yeah, i would kind of like an answer, something along the lines of "this end of the bridge connects to this card" -_-
a c 172 Î Nvidia
a b V Motherboard
September 11, 2008 4:32:40 PM

V3NOM said:
yeah, i would kind of like an answer, something along the lines of "this end of the bridge connects to this card" -_-

There are two types of SLI bridge, one for a dual card set up and one for a triple card and as far as I'm aware they only come packaged with the motherboard and I have not seen them on sale on their own but someone else might have. A dual card SLI bridge can be put onto the cards either way round and I have not seen any performance difference if I put on upside down (although there are no direction or PCI-e1/PCI-e2 markings) as it where.

HTH.
September 13, 2008 7:49:24 AM

ok, thanks.
!