justinrmitchell Posted November 10, 2010 Share Posted November 10, 2010 i will be running sli gtx 480's soon and am not sure where to connect them properly. the first gpu is hooked up to the pci-e connectors comming from the circle part of the psu/24-pin/8-pin. where do i connect the second gpu to so i dont overload a rail? What is the recommend setup for to gtx 480 gpu's with this psu? thank you corsair and members. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted November 13, 2010 Corsair Employees Share Posted November 13, 2010 The way that the rails are set up you can not overload them. One rail will power your CPU/MOBO and a single graphics card and the other rail can power 2 additional graphics cards. Link to comment Share on other sites More sharing options...
Cannyone Posted November 22, 2010 Share Posted November 22, 2010 So if I understand this graphic correctly... http://www.houseofhelp.com/forums/attachment.php?attachmentid=3676&stc=1&d=1213300906 It would be best to avoid using the first two extra PCI-E connectors (colored in red) until I want to use a 3rd card? Link to comment Share on other sites More sharing options...
rcarkk Posted November 22, 2010 Share Posted November 22, 2010 So if I understand this graphic correctly... http://www.houseofhelp.com/forums/attachment.php?attachmentid=3676&stc=1&d=1213300906 It would be best to avoid using the first two extra PCI-E connectors (colored in red) until I want to use a 3rd card? It seems just that. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted November 22, 2010 Corsair Employees Share Posted November 22, 2010 So if I understand this graphic correctly... http://www.houseofhelp.com/forums/attachment.php?attachmentid=3676&stc=1&d=1213300906 It would be best to avoid using the first two extra PCI-E connectors (colored in red) until I want to use a 3rd card? You can do it that way, but I would use the fixed PCIE cables for the first card, and then use the 12v1 modular PCIE cables for the second card. Then you have 12v1 powering motherboard, CPU and graphics card 2, while 12v2 is powering all your accessories along with your primary graphics card. Link to comment Share on other sites More sharing options...
rcarkk Posted November 22, 2010 Share Posted November 22, 2010 You can do it that way, but I would use the fixed PCIE cables for the first card, and then use the 12v1 modular PCIE cables for the second card. Then you have 12v1 powering motherboard, CPU and graphics card 2, while 12v2 is powering all your accessories along with your primary graphics card. The HX1000 is basically two 500W PSUs in one. This is what you recomend: MB + OC CPU + RAM on 12V Rail 1 = 230 Watt Gfx Card 1 PCI-E MoBo Slot on 12V Rail 1 = 75 Watt Gfx Card 2 PCI-E MoBo Slot on 12V Rail 1 = 75 Watt Gfx Card 2 with two modular PCI-E Cables from 12V Rail 1 = 150+75 Watt DVD´s + HDD´s + Fans... on 12V Rail 2 = 50 Watt Gfx Card 1 with two fixed PCI-E Cables from 12V Rail 2 = 150+75 Watt Total on the 12V rail 1 = 605 Watt Total on the 12V rail 2 = 275 Watt Won´t the 12V Rail 1 be too much stressed this way, knowing that the each Rail only goes to 500W. Doing this math we can clearly see that the 12V Rail 1 will blow because of the 605 Watt. If you move the first card to the 2nd Rail, the math is this: MB + OC CPU + RAM on 12V Rail 1 = 230 Watt Gfx Card 1 PCI-E MoBo Slot on 12V Rail 1 = 75 Watt Gfx Card 2 PCI-E MoBo Slot on 12V Rail 1 = 75 Watt DVD´s + HDD´s + Fans... on 12V Rail 2 = 50 Watt Gfx Card 1 with the two fixed PCI-E Cables from 12V Rail 2 = 150+75 Watt Gfx Card 2 with two modular PCI-E Cables from 12V Rail 2 = 150+75 Watt Total on the 12V rail 1 = 380 Watt Total on the 12V rail 2 = 500 Watt Wont this be less stressfull for each 12V Rail? Can it work this way? Link to comment Share on other sites More sharing options...
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