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PCIe 2.0 or 2.1

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February 4, 2011 11:30:59 PM

How can I tell if my PCIe ports are PCIe 2.0 or 2.1? I have one x16 and three x1. I'm interested in the difference between the two, figuring out which one I have and backwards compatability. I've been focusing more on the server side and haven't had much time to look at the newer desktop technologies. Thanks

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February 4, 2011 11:35:04 PM

well pci express 2.0 and 1.0 is backwards compatible so 2.1 and 2.0 theorically should be compatibles, if that helps any , good luck
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February 4, 2011 11:36:55 PM

It does help some. But my thing is if I have 2.0 I want to buy a 2.0 card if I have 2.1 I want the 2.1 card. I looked at the motherboard specs for my PC and cannot find the info.
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February 4, 2011 11:40:28 PM

I may even have just have PCI Express 1.0. I have a IPIEL-LA3 Eureka 3 motherboard.
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February 4, 2011 11:46:08 PM

hmm, never herd of that model , what company makes it? that mobo looks like a hp asus mobo, if im correct , tell me if im wrong thanks
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February 4, 2011 11:47:32 PM

It's made by pegatron for HP.
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February 4, 2011 11:55:00 PM

I looked up whitepapers from Intel and I see one says it is PCI e 1.1 and the other says 2.2. I looked up chipset info for 82801 PCI bridge which says it is 1.1 BUT I also have listed a ICH10 Family PCI Express Root port which says PCI e 2.2. That just confuses me more.
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February 5, 2011 1:50:37 AM

There aren't really any PCIe 2.1 motherboards yet. 2.1 add-on cards are backwards compatible with 2.0 connectors. ICH10 is PCIe 2.0.
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February 5, 2011 12:50:52 PM

Well I really want to go by the technical aspect, not it fits it works. I would like to find out if I have 1.1 or 2.1. If anyone can help me figure that out it would be great.
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February 5, 2011 2:29:43 PM

I already said you have 2.0.
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February 6, 2011 1:45:49 PM

So unique name... Where did you find this out? Just so I know for future reference? Sorry I didn't see your post up there. How did you know to go with the ICH and not the 80201?
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February 6, 2011 8:31:53 PM

what about the x1 slots? Also, How did you know to go with the ICH10 and not the 82801? One white peper asays 1.1 the other says 2.2? Basically, what mady you look at the ICH10 specs over the other? Thanks
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February 7, 2011 4:17:16 PM

Nice pic. Didn't think of a review site. Trying to find that on Intel is like pulling teeth.
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February 14, 2011 2:12:43 PM

nice motherboard picture, well they say a picture is worth a 1000 words somethimes :p 
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