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Author Topic: Quad crossfire 5870 or do I use adaptors?  (Read 1719 times)
The Koolio
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June 07, 2011, 04:51:47 PM
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I know this may be a tiring subject but Im being told different things by different people. Ive brought 5 of the below motherboards for 20 5870 cards. Now can someone tell me categorically whether these will fit on the board with or without adaptors? Are the number of pcie slots enough for these cards, I know they can run on x1 slots so what adaptors will I need from this store: https://cablesaurus.com/

The motherboard:

http://www.overclockers.co.uk/showproduct.php?prodid=MB-398-AS

bitcoin to the most accurate answer, detailed enough to satisfy my worries! Ill pm the person for their address!

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michaelmclees
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June 07, 2011, 06:49:36 PM
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You'll be able to fit 10 of your cards without adapters, but you'll need 10 adapters for the other 10 cards.  Starting from the top of the board, you'll put in 2 cards.  That will fill the first 4 slots.

The two PCIE slots at the bottom will be open still, but you want to use both of them.  If you put in another card in the second to last slot, you'll be covering the last slot, as your card is going to be 2 slots wide.  So if you want to use both those last slots, you'll need 2 adapters, one for each.  2 adapters per board is a total of 10 adapters.

And you should be able to run these adapters.

https://cablesaurus.com/index.php?main_page=product_info&cPath=1&products_id=10&zenid=bc08b0c77731d37c4ed5e9673608cee0
The Koolio
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June 07, 2011, 08:16:51 PM
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You'll be able to fit 10 of your cards without adapters, but you'll need 10 adapters for the other 10 cards.  Starting from the top of the board, you'll put in 2 cards.  That will fill the first 4 slots.

The two PCIE slots at the bottom will be open still, but you want to use both of them.  If you put in another card in the second to last slot, you'll be covering the last slot, as your card is going to be 2 slots wide.  So if you want to use both those last slots, you'll need 2 adapters, one for each.  2 adapters per board is a total of 10 adapters.

And you should be able to run these adapters.

https://cablesaurus.com/index.php?main_page=product_info&cPath=1&products_id=10&zenid=bc08b0c77731d37c4ed5e9673608cee0

Thanks for that, will I also need dummy plugs? One card will be attached via dvi/VGA

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michaelmclees
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June 07, 2011, 08:19:33 PM
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You'll need dummy plugs for the cards not connected to a monitor if you're going to use XP.  Don't worry.  Your cards will come with DVI to VGA connectors and cutting the resistors for the dummy monitor is dead simple.

http://www.overclock.net/folding-home-guides-tutorials/384733-30-second-dummy-plug.html

Oh... and my address is 13roSuwtMbCX8HZMGJ6j8sXLr7GnPYmREk.
alexdrans
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June 07, 2011, 10:16:33 PM
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I know this may be a tiring subject but Im being told different things by different people. Ive brought 5 of the below motherboards for 20 5870 cards. Now can someone tell me categorically whether these will fit on the board with or without adaptors? Are the number of pcie slots enough for these cards, I know they can run on x1 slots so what adaptors will I need from this store: https://cablesaurus.com/

The motherboard:

http://www.overclockers.co.uk/showproduct.php?prodid=MB-398-AS

bitcoin to the most accurate answer, detailed enough to satisfy my worries! Ill pm the person for their address!

Damn, that's a nice price for that motherboard.

How come you're using 5870s mate? They're not the most cost effective cards out there.
The Koolio
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June 07, 2011, 11:49:07 PM
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Reason is a. Overclockers are looking after me b. I know these cards better than the rest and use them currently and c. The mining power of 4 compared to anything for similar price isn't as good

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