riser cable with power or without power

[bitcoindude80]

Hi all,

I'm building my first rig with 4 x Sapphire AMD Radeon HD 7970 3GB GDDR5 OC.

Do I  need to use the riser cable with or without power?

Thanks for your feedback!

[AzureEngineer]

Depends how many GPUs your motherboard is designed to handle. Most boards aren't designed with more than two GPUs in mind. Powered risers are your safest bet regardless.

[bitcoindude80]

I have this motherboard = GIGABYTE GA-990FXA-UD5

[AzureEngineer]

I have this motherboard = GIGABYTE GA-990FXA-UD5

3way AMD CrossFireX and SLI multi-graphics support

You will need a powered riser for at least the fourth card, I would suggest at least two just to be safe, though. 7970's are power hungry.

[bitcoindude80]

Thanks for the feedback AzureEngineer!!

[AzureEngineer]

Thanks for the feedback AzureEngineer!!

 

[kirchhoff]

Anyone have a link for a good powered riser?

[AzureEngineer]

Anyone have a link for a good powered riser?

www.cablesaurus.com

www.buyahash.com


I have an order with Cablesaurus (they still have not been delivered) I ordered about a week and a half ago.

The Owner of BuyAHash responded to me on Reddit:

http://www.reddit.com/r/litecoin/comments/1dlpfs/cheap_and_easy_risers/c9syqb8?context=3

[marvel212]

why not use a riser and use power adapter instead?  Much cheaper route I think

[CynosureEPR]

Anyone have a link for a good powered riser?

I got an order of 5 off of E-Bay (from Hong Kong, though, so be prepared to wait) in a single listing for ~$25.

They shipped out the day I ordered along with tracking.

[Cryptocables]

I'd like to tack onto this thread!

I also offer both types powered risers at Cryptocables.com if anyone is looking for any! I am based in the US, and have flat rate shipping domestically and internationally. Additionally, I also include free Pop Rocks candy with every order :o)

If you have any questions please don't hesitate to contact me!

[bitcoindude80]

Can i use all x16 by x16 riser cable for all slots? because the there is one x4 and one x8 and two x16.

[astralvoid]

I think you can use 1x to 16x cables for all cards.  At least I've seen many rigs with this setup. someone please tell me if I'm wrong because I ordered a 10x lot of 1x to 16x cables.

[Sophokles]

I think you can use 1x to 16x cables for all cards.  At least I've seen many rigs with this setup. someone please tell me if I'm wrong because I ordered a 10x lot of 1x to 16x cables.

1x to x16 cables are fine for all cards

[Sophokles]

I have this motherboard = GIGABYTE GA-990FXA-UD5

3way AMD CrossFireX and SLI multi-graphics support

You will need a powered riser for at least the fourth card, I would suggest at least two just to be safe, though. 7970's are power hungry.

Actually, I have the exactly the same setup (mobo and cards) running with 4 cards, without powered risers. Has been running stable for weeks (mining litecoin), no problem so far. I have just mailed Gigabyte customer support if its ok to plug in a fifth card... We keep you posted about the results, hehe.

[bitcoindude80]

I have this motherboard = GIGABYTE GA-990FXA-UD5

3way AMD CrossFireX and SLI multi-graphics support

You will need a powered riser for at least the fourth card, I would suggest at least two just to be safe, though. 7970's are power hungry.

Actually, I have the exactly the same setup (mobo and cards) running with 4 cards, without powered risers. Has been running stable for weeks (mining litecoin), no problem so far. I have just mailed Gigabyte customer support if its ok to plug in a fifth card... We keep you posted about the results, hehe.

Do you have a picture to share with all of us

With 4 cards do you have to do any kind of special configuration? or just plug it into the motherboard with the riser cable?

What OS are you running?

[Sophokles]

You don't need special configuration, just plug in the risers. But not all combinations of PCIe slots work. Was a bit of trial and error until all cards got recognized.

OS is Win 7.

Will post some pictures later!

[bitcoindude80]

You don't need special configuration, just plug in the risers. But not all combinations of PCIe slots work. Was a bit of trial and error until all cards got recognized.

OS is Win 7.

Will post some pictures later!

Thanks Sophokles!

[bitcoindude80]

There you go. This is the stable configuration with 4 cards. There is a bit of space between the cards and the PSU, so I'm currently fitting a fifth one in there 

http://s7.directupload.net/images/130510/vkxi66i4.jpg

It's awesome!!

Where did you get the hardware for that open air rig?

[BitshireHashaway]

Very nice design, well built and looks to be very good at cooling. If your using windows I wouldn't recommend a fifth graphics card because they have problems after four but other than that, good job and best of luck!