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Will a PCI-E 2.0 video card work in PCI-E 1.0 slot?

Last response: in Graphics & Displays
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a b U Graphics card
December 13, 2012 5:26:00 PM

Hi! I have a Nvidia 9800gt on a Gigabyte ep45-ud3r Motherboard. I want to ad another 9800gt and SLI. My question is, Will a PCI-E 2.0 card work in a PCI-E 1.0 slot? How about performance? Will anything be bottlenecked?

Thank you! :) 
a c 130 U Graphics card
a b V Motherboard
December 13, 2012 5:33:35 PM

It should do, there are some exceptions so its always best to check but they are pretty much universally backwards compatible.

The slot wont make a noticeable difference to performance.

Mactronix :) 
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a b U Graphics card
December 13, 2012 5:40:24 PM

Thank you! :) 
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a c 271 U Graphics card
a b V Motherboard
December 13, 2012 5:46:52 PM

Headbomb said:
Hi! I have a Nvidia 9800gt on a Gigabyte ep45-ud3r Motherboard. I want to ad another 9800gt and SLI. My question is, Will a PCI-E 2.0 card work in a PCI-E 1.0 slot? How about performance? Will anything be bottlenecked?

Thank you! :) 

That mobo only has one PCIe slot, IIRC there are no SLi capable P45 motherboards.
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December 13, 2012 7:15:54 PM

http://www.geforce.com/hardware/technology/sli

yes your pcie 2.0 card will work in a pcie 1.0 slot. it will be crippled to 4X as top bus speed if i remember right.

that board will not SLI, you will cripple any card to 4X using pcie 1.0 you would cripple any sli to 4X and a single card on 8X will blow them out of the water so to speak.
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December 13, 2012 7:19:35 PM

cancel what i said about the SLI not being possible migraine and i did not look at your link in time to see the 2nd pcie 2.0 16x slot.
so you must want to use it for physX ?
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a c 130 U Graphics card
a b V Motherboard
December 13, 2012 7:34:30 PM

Mousemonkey said:
That mobo only has one PCIe slot, IIRC there are no SLi capable P45 motherboards.


Any reason for there being no SLI boards mouse ?

Mactronix :) 
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December 13, 2012 7:36:50 PM

mactronix said:
Any reason for there being no SLI boards mouse ?

Mactronix :) 


I believe all the socket 775 intel chipset-based motherboards with two PCI-E Slots were crossfire only, not SLI.
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a c 130 U Graphics card
a b V Motherboard
December 13, 2012 9:27:22 PM

kawininjazx said:
I believe all the socket 775 intel chipset-based motherboards with two PCI-E Slots were crossfire only, not SLI.



Correct. Mouse is quite knowledgeable about these things and I was wondering if he knew why was all. Not really bothered just wondering.

Mactronix :) 
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a b U Graphics card
December 13, 2012 9:40:06 PM

Until recently nvidia only allowed sli on their chipsets. No reason other than that as far as I know.
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a c 271 U Graphics card
a b V Motherboard
December 13, 2012 9:42:23 PM


That is a different mobo to the OP's, that's a ud3R the OP listed a ud3R.
mactronix said:
Any reason for there being no SLI boards mouse ?

Mactronix :) 


kawininjazx said:
I believe all the socket 775 intel chipset-based motherboards with two PCI-E Slots were crossfire only, not SLI.


mactronix said:
Correct. Mouse is quite knowledgeable about these things and I was wondering if he knew why was all. Not really bothered just wondering.

Mactronix :) 


There was an Intel Vs Nvidia corporate hate fest going on at the time over Nvidia's licence to produce chipsets for the then upcoming Bloomfield 1366 socket CPU's IIRC.
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a c 130 U Graphics card
a b V Motherboard
December 14, 2012 6:12:48 AM

Mousemonkey said:
That is a different mobo to the OP's, that's a ud3R the OP listed a ud3R.






There was an Intel Vs Nvidia corporate hate fest going on at the time over Nvidia's licence to produce chipsets for the then upcoming Bloomfield 1366 socket CPU's IIRC.



Thanks MM

Mactronix :) 
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a c 130 U Graphics card
a b V Motherboard
December 14, 2012 9:56:16 AM

Mousemonkey said:
That is a different mobo to the OP's, that's a ud3P the OP listed a ud3R.

Is how that was supposed to read! :lol:  :D 



I was wondering :lol: 

Mactronix :) 
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a b U Graphics card
December 25, 2012 5:49:26 PM

Best answer selected by Headbomb.
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