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#1
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Help! PCI-E power connector question
I thought PCI-Express power connector should have 6pin, but my
motherboard MSI 975X has 4-pin socket (look like molex type on back of a DVD drive) for PCI-E x16. Can I simply connect the molex 4pin power cable to it? Thanks! |
#2
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Help! PCI-E power connector question
wrote in message oups.com... I thought PCI-Express power connector should have 6pin, but my motherboard MSI 975X has 4-pin socket (look like molex type on back of a DVD drive) for PCI-E x16. Can I simply connect the molex 4pin power cable to it? Thanks! ------------------------------------------- Your board may have a 4-pin Molex plug in order to supply extra 12V to the board with dual card configurations, but the 6-pin PCI-Express power connector is not to be plugged into a motherboard, but, rather, to be plugged into a PCI-Express graphics card that requires it. Some cards have this power plug, while other may not need a separate power plug or may use a standard Molex or floppy power connection. Depends upon the particular card. Most higher-end PCI-Express cards do have this power plug on them, while a lot of the mid-range or lower end cards may not require it. Hope this helps, Russell http://tastycomputers.com |
#3
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Help! PCI-E power connector question
Yes, your answer helped, but I'm still confused about the following:
From the motherboard manual "the ...12V power connector is used to provided power to the PCIEX16 graphics card" Pin definition 1 5v 2 2 gnd 3 3 gnd 4 12 v (again, the connector looks like molex type) From the Power supply unit 4-pin Molex: Pin 1 12v 2 com 3 com Pin 4 5v So looks like pin 1 and 4 are reverse of what is needed. I have no idea what power wire is used to plug into this connector on the motherboard. RussellS wrote: wrote in message oups.com... I thought PCI-Express power connector should have 6pin, but my motherboard MSI 975X has 4-pin socket (look like molex type on back of a DVD drive) for PCI-E x16. Can I simply connect the molex 4pin power cable to it? Thanks! ------------------------------------------- Your board may have a 4-pin Molex plug in order to supply extra 12V to the board with dual card configurations, but the 6-pin PCI-Express power connector is not to be plugged into a motherboard, but, rather, to be plugged into a PCI-Express graphics card that requires it. Some cards have this power plug, while other may not need a separate power plug or may use a standard Molex or floppy power connection. Depends upon the particular card. Most higher-end PCI-Express cards do have this power plug on them, while a lot of the mid-range or lower end cards may not require it. Hope this helps, Russell http://tastycomputers.com |
#4
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Help! PCI-E power connector question
wrote in message ups.com... Yes, your answer helped, but I'm still confused about the following: From the motherboard manual "the ...12V power connector is used to provided power to the PCIEX16 graphics card" Pin definition 1 5v 2 2 gnd 3 3 gnd 4 12 v (again, the connector looks like molex type) From the Power supply unit 4-pin Molex: Pin 1 12v 2 com 3 com Pin 4 5v So looks like pin 1 and 4 are reverse of what is needed. I have no idea what power wire is used to plug into this connector on the motherboard. RussellS wrote: wrote in message oups.com... I thought PCI-Express power connector should have 6pin, but my motherboard MSI 975X has 4-pin socket (look like molex type on back of a DVD drive) for PCI-E x16. Can I simply connect the molex 4pin power cable to it? Thanks! ------------------------------------------- Your board may have a 4-pin Molex plug in order to supply extra 12V to the board with dual card configurations, but the 6-pin PCI-Express power connector is not to be plugged into a motherboard, but, rather, to be plugged into a PCI-Express graphics card that requires it. Some cards have this power plug, while other may not need a separate power plug or may use a standard Molex or floppy power connection. Depends upon the particular card. Most higher-end PCI-Express cards do have this power plug on them, while a lot of the mid-range or lower end cards may not require it. Hope this helps, Russell http://tastycomputers.com ---------------------------------------- The Molex plug on the motherboard above the top PCI-Express graphics card slot is there just to supply extra voltage stability from the board to higher-end graphics card configurations, but can be used even if you have a low end card. The Molex plug is keyed so that a standard Molex connector from a power supply cable can only go in one way. You only need the separate 6-Pin PCI-Express power cable from the power supply plugged directly into your graphics card if your particular card requires it. As previously mentioned, some cards have this, some don't. Russell http://tastycomputers.com |
#5
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Help! PCI-E power connector question
"RussellS" rsullivan@tastycomputersdotcom_replace"dot"with". " wrote in message ... The Molex plug on the motherboard above the top PCI-Express graphics card slot is there just to supply extra voltage stability from the board to higher-end graphics card configurations, but can be used even if you have a low end card. My Asus A8n-sli Prem has that plug, but the manual vaguely only mentions it's use if two graphics card are being run in SLI. Is there any help/harm in connecting it to the PSU if only one video card is being used? -- WooHoo2You Athlon 3800 X2 4 x 512 MB 3200 DDR 400 a8n-sli Premium GeForce 6800 256 MB PCI-e Sound Blaster Audigy 2 Value 200 GB SATA HD 160 GB SATA HD |
#6
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Help! PCI-E power connector question
"WooHoo2You" wrote in message ink.net... "RussellS" rsullivan@tastycomputersdotcom_replace"dot"with". " wrote in message ... The Molex plug on the motherboard above the top PCI-Express graphics card slot is there just to supply extra voltage stability from the board to higher-end graphics card configurations, but can be used even if you have a low end card. My Asus A8n-sli Prem has that plug, but the manual vaguely only mentions it's use if two graphics card are being run in SLI. Is there any help/harm in connecting it to the PSU if only one video card is being used? -- WooHoo2You Athlon 3800 X2 4 x 512 MB 3200 DDR 400 a8n-sli Premium GeForce 6800 256 MB PCI-e Sound Blaster Audigy 2 Value 200 GB SATA HD 160 GB SATA HD --------------------------------------------- Shouldn't be a problem having it connected without 2 cards, but why bother if the system is stable without it connected? You have one less power cable to route. maximizing airflow and minimizing cable clutter. I would recommend connecting it, however, if you later add a second card into the mix. Russell http://tastycomputers.com |
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