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Radeon 5870 eyefinity 6 help w/power supply

Last response: in Graphics & Displays
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April 23, 2011 7:30:43 PM

Alright I have a desktop I built that has a 750w power supply. I currently have one

SAPPHIRE 100290SR Radeon HD 5870 (Cypress XT) 2GB

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

but need 4 more screens so I was going to get another one. However, it says you need a 900w power supply if you are doing crossfire in dual mode but in order to get 12 screens you dont connect these two together in crossfire mode. So I was wondering would I still need a 900w power supply even if I dont crossfire them but instead have them act on their own? I currently have 6 screens but need 4 more. If I cant use this card, are there any other ways to achieve this? Thank you very much.
April 24, 2011 10:07:05 PM

anyone?

Quote:
Don't...
* Bump posts,


Source.
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a c 236 U Graphics card
a c 165 ) Power supply
April 24, 2011 11:26:49 PM

who said you need 900w for a CF ATI 5870 set up or plain dual mode? A decent 750w unit is more then enough.
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April 24, 2011 11:47:15 PM

Well, on the newegg.com website under the details for the 5870, it says it need 900w for 2 of these cards in dual mode under the system requirements. This is an eyefinity 6 so I'm not sure if that is different from the normal 5870 as well. I only have a 750w power supply so that is why I am wondering before I buy another one. Thanks.

Here is the link;

http://www.newegg.com/Product/Product.aspx?Item=N82E168...


P.S. Sorry about the bump, wont do it again, will just edit.
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a c 236 U Graphics card
a c 165 ) Power supply
April 25, 2011 12:33:38 AM

melcor said:
Well, on the newegg.com website under the details for the 5870, it says it need 900w for 2 of these cards in dual mode under the system requirements. This is an eyefinity 6 so I'm not sure if that is different from the normal 5870 as well. I only have a 750w power supply so that is why I am wondering before I buy another one. Thanks.

Here is the link;

http://www.newegg.com/Product/Product.aspx?Item=N82E168...


P.S. Sorry about the bump, wont do it again, will just edit.


that's to cover themselves from junk PSU. like i said, if you have a solid 750w (not the cheapest one you saw) then you will be fine. in a dual 5870 set up you won't break 670w total system power at load. what is your make and model PSU?

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April 25, 2011 3:23:26 AM

The power supply is

CORSAIR CMPSU-750TX 750W ATX12V v2.2 SLI Certified CrossFire Ready 80 PLUS Certified Active PFC Compatible with Core i7 Power Supply

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

It is currently $109 but I am not sure if that is cheap for 750w. That is great that I should be able to run it on a 750w psu. If you don't mind just confirming that this particular psu is decent then I will go ahead and buy the card and a few more monitors. Thanks again so much for your help ct.
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Best solution

a c 236 U Graphics card
a c 165 ) Power supply
April 25, 2011 3:40:21 AM

its a very good PSU with 750w continuous power that will hit 900w at peak. you will be fine

http://www.hardwaresecrets.com/article/Corsair-TX750W-P...
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April 25, 2011 3:41:32 AM

Best answer selected by melcor.
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April 25, 2011 3:42:54 AM

Thanks a bunch. I can now buy the card without worrying about if it will work or not.
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