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Are PCI-E Riser daisy chains possible?

MitchG_
By MitchG_
in Cases and Mods
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Title says it all, I was wondering If Pci-e Riser daisy chains are possible, and If so do they make a huge difference in performance?

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You shouldn't use more than one, otherwise chances are your GPU won't be detected at all.

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Just to be clear, you mean doing this? 
 

pciedaisychain.png

Yes, it's 2871 as in the year 2871. I traveled all this way, back in time, just to help you. And you thought your mama lied when she said you were special. -_-

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4 minutes ago, MitchG_ said:

Title says it all, I was wondering If Pci-e Riser daisy chains are possible, and If so do they make a huge difference in performance?

Short answer: quite possibly
Long answer: the amount of graphic interference you would see (from emi) would make the card useless. And as @enderman has already stated, there is always a chance it won't work at all.

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2 minutes ago, Xanthe_2871 said:

Just to be clear, you mean doing this? 
 

pciedaisychain.png

Yes

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2 minutes ago, The Flying Sloth said:

Short answer: quite possibly
Long answer: the amount of graphic interference you would see (from emi) would make the card useless. And as @enderman has already stated, there is always a chance it won't work at all.

Okay, But would a long pci-e riser work?

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Just now, MitchG_ said:

Yes

The others here don't recommend it, I would say maybe get a longer single one? Instead of connecting multiple? But maybe the length is also an issue, I don't know. 

Yes, it's 2871 as in the year 2871. I traveled all this way, back in time, just to help you. And you thought your mama lied when she said you were special. -_-

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Just now, MitchG_ said:

Okay, But would a long pci-e riser work?

If it is shielded, yes, if not, most likely not

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I know it is possible over short distances (the Asrock One M8 comes to mind) But i wouldnt trst something like that over more than about 6 inches.  EMI is a huge concern.  Theres a reason these slots are soldered to your motherboard.

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Posted
12 minutes ago, MitchG_ said:

Title says it all, I was wondering If Pci-e Riser daisy chains are possible, and If so do they make a huge difference in performance?

COOULD you do it? probably. Should you do it? not if at all possible.

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7 minutes ago, MitchG_ said:

Okay, But would a long pci-e riser work?

Most of the time yes, it needs to be shielded and very high quality to make sure the signal remains intact.

Longer is much better than daisy chaining because the connector is a big part of the signal degradation problem.

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i mean thats how the bitcoin farmers used to do it , but i wont reccomend more than one chain (1+1 cables) 

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30 minutes ago, MitchG_ said:

Okay, But would a long pci-e riser work?

As mentioned it can be a hit and miss at times, higher chance of success with shielded cables, but as for extra long PCI-E extension your best option would be to get the professional risers from 3M.

 

http://www.overclock.net/t/1427731/pci-express-extender-cables-benchmarked

 

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I'm unsure if this solution will work, but you can get PCIe "switch" cards that sometimes have ePCIe cable connections on them, which means that you can extend your PCIe cards as far away as you really want, assuming that you also have a backplane for the card to sit in.

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  • 1 year later...
Posted

I know this thread is old, but it was the first thing that came up when I googled this inquiry the OP was asking.  


I was disappointed with the answers provided so I searched Youtube instead of Google and found this,

 

how ironic is the source. 

 

 

 

 

Let this be known that OP's inquiry is indeed possible. 

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  • 2 years later...
Posted

I tried with 2 different PCIE extension cable brand, and it works for mining. But it's really horrible setup 😞 

spacer.png

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Posted (edited)
7 hours ago, PaddyFR said:

I tried with 2 different PCIE extension cable brand, and it works for mining. But it's really horrible setup 😞 

spacer.png

hmm i would put it throw the pci slot and get a gpu mount or make one imo. a longer 1 cable one be better but that cost money. and if your thinking on using an pcie 4.0 gpu later on you have to buy a new cable but im not 100% if its needed for mining thow.

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