6 pin PCI-e Y cable
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From: ChronicBoy on 1 Dec 2008 07:25 Hi I was wondering how do you have to connect the 6 pin PCI-e Y cable to your PSU. Do you have to just plug in 1 of the 4 pin molex connectors or do you have to plug-in both of them? I'm going to buy 2 of this video card: http://www.newegg.com/Product/Product.aspx?Item=N82E16814130416 and this would be my new power supply: http://www.thermaltakeusa.com/Product.aspx?C=1264&ID=1502 If someone could give me any suggestions on a power supply that has 4x 6 pin PCI-e conenctors would be good. Thank You In advanced
From: Paul on 1 Dec 2008 11:35 ChronicBoy wrote: > Hi > I was wondering how do you have to connect the 6 pin PCI-e Y cable to > your > PSU. Do you have to just plug in 1 of the 4 pin molex connectors or do > you have > to plug-in both of them? > > I'm going to buy 2 of this video card: > http://www.newegg.com/Product/Product.aspx?Item=N82E16814130416 > > and this would be my new power supply: > http://www.thermaltakeusa.com/Product.aspx?C=1264&ID=1502 > > If someone could give me any suggestions on a power supply that has 4x > 6 pin PCI-e conenctors > would be good. > > Thank You In advanced A 9800 GTX, for comparison, is 108W of power per card. That comes mostly from the 12V rail, so 108W/12V = roughly 9 amps per card. The power distribution includes allowing 4 amps to flow through the PCI Express slot connector. Since two cards draw 8 amps, it means the main connection from power supply to motherboard should be with a 24 pin connector, or the motherboard should have a Molex 1x4 on the motherboard for auxiliary power input. http://www.xbitlabs.com/articles/video/display/geforce9800gtx_7.html#sect0 This PSU has four connectors. 2x6 and 2x(6+2). The 6+2 thing unhinges, giving a 6 pin connector. If you had an 8800 kind of card, then you leave it together to make an 8 pin. The 60 amps total current on the 12V rail, is enough for a 12A processor and two 9A video cards, with plenty to spare to run disk drives etc. http://www.newegg.com/Product/Product.aspx?Item=N82E16817703009 If you were using adapters, I'd try running a single video card from one Molex chain, like this. Since there is no place to plug in the dangling 1x4 Molex on the second adapter, I'd leave it disconnected. With this wiring pattern, 5 amps comes from the power supply, and is split over the three wires provided by the two adapters shown. I would not expect to find a Molex chain with more connectors on it, but I suppose it happens. 5A -----X-----X-----X | | | | | +----Adapter----> Video card 2x3 plug #1 | +---------/ | +---------Second_adapter----> Video card 2x3 plug #2 --/ The second video card would use its own private Molex chain. 5A -----X-----X-----X | | | | | +----Adapter----> Video card 2x3 plug #1 | +---------/ | +---------Second_adapter----> Video card 2x3 plug #2 --/ A new power supply will eliminate this mess. Paul
From: ChronicBoy on 1 Dec 2008 12:31 I found a great/or just a solution I don't know if this is a good decision but it meets my requirements http://www.newegg.com/Product/Product.aspx?Item=N82E16817256017
From: Paul on 1 Dec 2008 13:38 ChronicBoy wrote: > I found a great/or just a solution > I don't know if this is a good decision > but it meets my requirements > http://www.newegg.com/Product/Product.aspx?Item=N82E16817256017 It is 7" long, so check you have space for it. http://www.techaddicts.net/reviews/da750/da750.html Some comments here note a slight buzzing sound from the supply. http://www.newegg.com/Product/ProductReview.aspx?Item=N82E16817256017 In terms of nameplate specs, it is about the same as the one I linked to. Paul
From: John Holmes on 3 Dec 2008 05:19
Paul "contributed" in alt.computer: > It is 7" long Mine is 13" long. HTH -- <snip> |