Backwards compatability with PCI express slots

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Hello,
I have a motherboard with a PCI-E v1.0a compliant slot, will the newer 2.0 and 2.1 cards work in this slot?
 
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Hello,
I have a motherboard with a PCI-E v1.0a compliant slot, will the newer 2.0 and 2.1 cards work in this slot?
 

Maziar

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Hello and welcome to the forums
Yes PCI-E 2.0/2.1 is backward compatible with PCI-E 1.0
 

borisof007

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Just to be clear,

2.1 PCI-Express video cards may have issues working in 1.0 PCI-Express motherboard slots.
 

yanje03

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Hello,
I have a motherboard with a PCI-E v1.0a compliant slot, will the newer 2.0 and 2.1 cards work in this slot?
you can't use PCI-E 2.1 cards, that mean you can't buy any new ATI card. 80% motherboard will get trouble. try Nvidia card which should work. anyway buy them from local shop in case you need return them. I have returned 3 ATI card when I was trying to upgrade my GT8800 card
 

yanje03

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I believe backward compatible only mean you can put PCI-E 1.0 card in a PCI-E 2.0 slot and not vice versa
 

Mousemonkey

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The simple fact that I ran a pair of 8800GT's which are PCIe 2.0 cards on an ABIT AN8 32X motherboard which is PCIe 1.0/1.0, should blow that belief out of the water.
 

Maziar

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I meant that you can use a PCI-E 2.0 card in a motherboard which has PCI-E 1.0 slot
 
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Yes i was talking about putting a 2.0 or 2.1 in a 1.0a slot, so it sounds like I should stick with an 2.0 card (tough to find a dual dvi 1.0 card anymore). I've typically stuck to ATI NVidia has given me problems, matter of fact the card I put in this motherboard was Nvidia (PCI) and caused a conflict with the PCI bus. Plugged in a borrowed ATI PCI card and no problems.
 
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