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780i pci-e problems/PhysX

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September 10, 2010 3:11:36 AM

I'm trying to get my 9600 gt to work as my dedicated PhysX card in my setup but my system wont recognize the card.
I have it in the second slot 1 and 3 have gtx 285s. Also I want to use the 9600 gt for multiple displays without having to turn on and off my sli. Any help would be great.
a c 235 V Motherboard
September 10, 2010 3:17:18 AM

You have four graphics cards installed... Correct?

The 780i's, if I remember correctly, only support tri-SLI so the 9500GT isn't supported. Can you list your motherboard make & model so we can verify if it has the required 4 PCIe x16 slots?
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September 10, 2010 4:18:22 AM

eVGA nForce 780i SLI 775 A1 its the base model not the ftw edition, part # 132-CK-NF78-A1
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a c 235 V Motherboard
September 10, 2010 4:23:12 AM

Your motherboard has 3 PCIe 2.0 x16 slots, which are being used by your three GTX 285's in Tri-SLI. You don't have another motherboard slot that will allow you to utilize the 9500GT as a PhysX card. With that said, it won't be needed anyway with three GTX 285. It might actually hurt your performance.
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September 10, 2010 4:53:46 AM

I think you miss read my post. I have 3 16x pci-e slots two of witch have a gtx 285. I have one free 16x slot with a 9600 GT witch my system wont recognize. I'll try and reinstall the drivers that mite work.
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a c 716 V Motherboard
September 10, 2010 5:28:42 AM

^ What OS are you running?
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September 10, 2010 5:38:38 AM

windows 7 64 bit
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a c 716 V Motherboard
September 10, 2010 7:24:32 AM

BIOS -
SLI-Ready Memory {enabled}
Frequency Settings | PCIe x16_1, MHz - PCIe x16_3, MHz are correct for the GPUs
Init Display First | must be one of the GTX 285s

Q - What GPUs are shown in th Device Manager tree | Display Adapters ?

I am having trouble understanding which GPU is in what slot. Place the (2) GTX 285s in the top 2 PCIe x16 and the 9600GT in the 3rd PCIe x16. However, I would first disconnect ANY video out {e.g. VGA} to the 9600GT. The bridge is connected to only the GTX 285s. Don't know if your request "Also I want to use the 9600 gt for multiple displays without having to turn on and off my sli" is possible without turning on/off and reconfiguring a few GPU control panel settings. A PhysX only does rendering calculations w/o any video output; ~ a CPU for the GPUs.

How to video EVGA - http://www.youtube.com/watch?v=u7X9Wj55is0
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September 10, 2010 7:33:33 AM

I got it working. I installed the latest bios and did a dust off run on the pci-e slots and it showed up. I'll try to be more detailed next time I have questions. Thanks for trying to help.
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a c 716 V Motherboard
September 10, 2010 7:42:54 AM

You must not be in EST...

Very cool - ENJOY! PhysX is great! :love: 
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