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ASUS P5N-E SLI and 2 8800gts 512's

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When I try to hook them up per manuals instructions, the lower card, or card in the 2nd PCI-e slots fan seems to run at a considerably higher speed. And the 2nd card doesn't show up in the device manager. I have switched the cards positions and the same thing happens. And yes I have the latest driver for the EVGA cards. Any help would be appreciated.
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The fan speed is related to temperature, the lower card won't be getting the same level of air flow it would have in a single card config and the other card is adding to the heat output so that is what is most likely happening with the fans.

On the rest I don't have much experience in SLI I'm not a fan of dual card configs, waste of money in my opinion. Make sure you have the boards Bios and drivers up to date as the motherboard is a big part of SLI as well. Install as per instructions and check the Nvidia forums they are by far the best place to go for SLI related info and problems.
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Hello Skyedog...

Have you enabled SLI in the NVIDIA Control Panel? Right click on the desktop and choose "NVIDIA Control Panel"...you should see the link to "Set SLI Configuration" in the left pane of the control panel...click that and then enable the SLI Technology. This will require a restart.

If you can't access the NVIDIA Control Panel that way, it should be available in the Advanced Display Settings from Display Settings...or from the Windows Control Panel.


Hi warriorscot! Good to see you again.
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