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Other => CPU/GPU Bitcoin mining hardware => Topic started by: Roman1974 on January 05, 2014, 11:55:22 AM



Title: Risers with molex
Post by: Roman1974 on January 05, 2014, 11:55:22 AM
New in mining , i bought just one graphic r9 280x, now im going to buy 3, so i need to buy risers, how i know if i need risers with molex or not need molex? thanks


Title: Re: Risers with molex
Post by: repairguy on January 05, 2014, 12:21:10 PM
What motherboard are you using?  That will determine if you need risers or not.


Title: Re: Risers with molex
Post by: vpasic on January 05, 2014, 12:38:41 PM
Always use powered risers!!!
Especially for more than 2 gpu-s on single mobo!


Title: Re: Risers with molex
Post by: repairguy on January 05, 2014, 12:50:51 PM
Always use powered risers!!!
Especially for more than 2 gpu-s on single mobo!

I know it is easier to tell people that they always need powered risers, but it isn't true.  I have had 6 gpu rigs running for several  months with no risers, no voltage drop and no problems.


Title: Re: Risers with molex
Post by: vpasic on January 05, 2014, 01:37:33 PM
Always use powered risers!!!
Especially for more than 2 gpu-s on single mobo!

I know it is easier to tell people that they always need powered risers, but it isn't true.  I have had 6 gpu rigs running for several  months with no risers, no voltage drop and no problems.

it's not easier to tell people it's safer for mobo!
you can burn mobo with more than 2 gpu-s running without powered risers.

I wonder how much longer will work that mobo of yours.
and I really can't imagine how did you place 6 gpu-s on mobo without risers!
bullshit if you asking me.


Title: Re: Risers with molex
Post by: dimke_yu on January 05, 2014, 01:43:20 PM
It depends from VGA to VGA some cards pull out maximum power from 6pin or 8pin connectors and some of them pull through motherboard also. In case of 280x, 290 and 290x it is better to use powered risers.


Title: Re: Risers with molex
Post by: Slander on January 05, 2014, 05:30:00 PM
It depends from VGA to VGA some cards pull out maximum power from 6pin or 8pin connectors and some of them pull through motherboard also. In case of 280x, 290 and 290x it is better to use powered risers.

yep agree, I use unpowered risers on cards that have no sep power connectors. My 7950 and 7970 the cards 'do' work but they are way more stable with powered risers.


Title: Re: Risers with molex
Post by: Roman1974 on January 05, 2014, 09:16:37 PM
r9 280X , motherboard  MSI Z77A-G45, thanks


Title: Re: Risers with molex
Post by: skleven on January 05, 2014, 10:20:02 PM
Always use powered risers!!!
Especially for more than 2 gpu-s on single mobo!

A few motherboards now comes with either molex or 6pin pci-e connector on the board. On those mobos you do not need powered risers.
 example: http://www.gigabyte.com/products/product-page.aspx?pid=4514#ov (http://www.gigabyte.com/products/product-page.aspx?pid=4514#ov)


Title: Re: Risers with molex
Post by: Roman1974 on January 06, 2014, 10:49:56 AM
Always use powered risers!!!
Especially for more than 2 gpu-s on single mobo!

A few motherboards now comes with either molex or 6pin pci-e connector on the board. On those mobos you do not need powered risers.
 example: http://www.gigabyte.com/products/product-page.aspx?pid=4514#ov (http://www.gigabyte.com/products/product-page.aspx?pid=4514#ov)

Im newbie, really i dont know how to check, i have this http://www.pccomponentes.com/msi_z77a_g45.html, im buying graphics to install, need that riser have molex? want to install 4 graphics, thanks


Title: Re: Risers with molex
Post by: repairguy on January 06, 2014, 12:13:30 PM

Im newbie, really i dont know how to check, i have this http://www.pccomponentes.com/msi_z77a_g45.html, im buying graphics to install, need that riser have molex? want to install 4 graphics, thanks

Yes you need powered risers with that motherboard.


Title: Re: Risers with molex
Post by: repairguy on January 06, 2014, 12:15:16 PM
Always use powered risers!!!
Especially for more than 2 gpu-s on single mobo!

A few motherboards now comes with either molex or 6pin pci-e connector on the board. On those mobos you do not need powered risers.
 example: http://www.gigabyte.com/products/product-page.aspx?pid=4514#ov (http://www.gigabyte.com/products/product-page.aspx?pid=4514#ov)

What?? You mean he should be aimlessly repeating something that someone else told him, yet he has no understanding of why or what factors could change it?


Title: Re: Risers with molex
Post by: Roman1974 on January 06, 2014, 11:26:59 PM

Im newbie, really i dont know how to check, i have this http://www.pccomponentes.com/msi_z77a_g45.html, im buying graphics to install, need that riser have molex? want to install 4 graphics, thanks

Yes you need powered risers with that motherboard.

Molex 4 pins?

http://www.amazon.es/gp/aag/main?ie=UTF8&asin=&isAmazonFulfilled=&isCBA=&marketplaceID=A1RKKUPIHCS9HS&orderID=&seller=A1WVEK949ZXAY8