Bitcoin Forum

Other => CPU/GPU Bitcoin mining hardware => Topic started by: faille on June 13, 2011, 06:00:19 AM



Title: PCIE splitters
Post by: faille on June 13, 2011, 06:00:19 AM
I remember reading a post about someone that used a pcie splitter to connect 3 GPU's to a single PCIe slot, but can't find it again.

Does anyone know how successful this is, and where I might be able to buy such splitters?


Title: Re: PCIE splitters
Post by: kjj on June 13, 2011, 06:48:47 AM
cablesaurus sells them.


Title: Re: PCIE splitters
Post by: faille on June 13, 2011, 07:54:29 AM
you sure? don't see any on his site or in his main post


Title: Re: PCIE splitters
Post by: hugolp on June 13, 2011, 08:03:38 AM
I have bought from cablesaurus (using bitcoins) and Im very satisfied with the service.


Title: Re: PCIE splitters
Post by: swusc2 on June 13, 2011, 08:23:13 AM
He is talking about PCIe Splitters, i.e., a PCIe x16 to 3 PCIe x1 splitter. The example post was in Pics of your mining rig. The guy was trying to hook 6x5870 on once board with x16 to 3-x1 splitter. He didn't manage to get it too work instead just went with 2 motherboards with 3 cards each.


Title: Re: PCIE splitters
Post by: faille on June 13, 2011, 08:34:05 AM
He is talking about PCIe Splitters, i.e., a PCIe x16 to 3 PCIe x1 splitter. The example post was in Pics of your mining rig. The guy was trying to hook 6x5870 on once board with x16 to 3-x1 splitter. He didn't manage to get it too work instead just went with 2 motherboards with 3 cards each.

Thanks, I'll do some reading of that thread. Do you know if it was specifically the splitter he was having problems with? in the post I was thinking of, the guy did have it working, so maybe it was different?

Certainly increases the possibilities if you could split up each slot into multiple cards. Otherwise it's just extender cables, though it doesn't look like I can get them locally at all, Aus, so have to wait weeks on delivery 8(


Title: Re: PCIE splitters
Post by: swusc2 on June 13, 2011, 08:42:37 AM
He is talking about PCIe Splitters, i.e., a PCIe x16 to 3 PCIe x1 splitter. The example post was in Pics of your mining rig. The guy was trying to hook 6x5870 on once board with x16 to 3-x1 splitter. He didn't manage to get it too work instead just went with 2 motherboards with 3 cards each.

Thanks, I'll do some reading of that thread. Do you know if it was specifically the splitter he was having problems with? in the post I was thinking of, the guy did have it working, so maybe it was different?

Certainly increases the possibilities if you could split up each slot into multiple cards. Otherwise it's just extender cables, though it doesn't look like I can get them locally at all, Aus, so have to wait weeks on delivery 8(


I actually have no idea. He didn't specify, just said it wasn't working. You should trying googling folding with splitters since they probably have some resources that aren't available here.


Title: Re: PCIE splitters
Post by: kjj on June 13, 2011, 11:20:57 AM
you sure? don't see any on his site or in his main post

Sorry, my bad.  I was thinking extenders.  It was late.  :)


Title: Re: PCIE splitters
Post by: melco on June 13, 2011, 11:39:24 AM
Thought about splitters. Haven't found any. Really cheaper and easier to get two MSI 790FX-GD70 MB's.


Title: Re: PCIE splitters
Post by: gigabytecoin on June 13, 2011, 06:09:23 PM
Here you go. (http://www.newegg.com/Product/Product.aspx?Item=N82E16812196870&cm_re=pci_splitter-_-12-196-870-_-Product)


Title: Re: PCIE splitters
Post by: tito13kfm on June 13, 2011, 06:27:58 PM
Google for RSC-R2UT-2E8R (2 way)
RSC-R2UU-A4E8+ (4 way)

They should work in theory, but splitting the power between power hungry graphics cards may not work out so well.  The spec allows for up to 75W across the bus I believe, hopefully a card with 2 auxillary power connectors and only 1 physical gpu die wouldn't draw enough from the board to cause any damage.


Title: Re: PCIE splitters
Post by: faille on June 13, 2011, 08:14:00 PM
Here you go. (http://www.newegg.com/Product/Product.aspx?Item=N82E16812196870&cm_re=pci_splitter-_-12-196-870-_-Product)

PCIe splitter, not power splitter.

plug into 1 pcie slot, connect 2 or 3 GPU's to it.


Title: Re: PCIE splitters
Post by: kjj on June 13, 2011, 08:25:58 PM
http://www.amfeltec.com/products/x4pcie-splitter4.php


Title: Re: PCIE splitters
Post by: airdata on June 13, 2011, 08:38:25 PM
http://www.amfeltec.com/products/x4pcie-splitter4.php

Is there anywhere to buy these?  I clicked the request price quote a week or two ago and they never responded to my email.



Title: Re: PCIE splitters
Post by: faille on June 13, 2011, 08:50:03 PM
I got a replay to my quote request from them finally :

Quotation (YYYYMMDD-XX) (Prices in USD)

----------------------------------------------------------------------------------------

SKU                       Item                                                    Qty       Unit Price          Total Price

----------------------------------------------------------------------------------------

SKU-040-01     Flexible x1 PCI Express 3-Way Splitter   1  $ 135.20            $ 135.20

                            (power from host card)

Freight              Shipping and Handling                                                            $ 79.86

------------------


Seems outrageously expensive, especially on the shipping and handling. Have not been able to find anywhere else that sells them. Might still be cost effective though compared to buying a 2nd system.