fenix793 Posted September 17, 2005 Posted September 17, 2005 If your PSU has two 12V rails where do you take the reading for the motherboards 12v rail? I know there's a picture of it floating around because I've seen it but I've been searching and I couldn't find it. Share this post Link to post Share on other sites More sharing options...
OceanSeasforMe Posted September 18, 2005 Posted September 18, 2005 Voltage Measurement points/post ten for images http://xtremesystems.org/forums/showthread...7631#post777631 ????? edit, hrm thats the only one Ihave I dont think thats it. sry RE Edit : Check davidhammock200's signature in this post ;/link http://www.dfi-street.com/forum/showthread.php?t=10854 I knew I saw it somewhere, thought I had the right link. Share this post Link to post Share on other sites More sharing options...
fenix793 Posted September 18, 2005 Posted September 18, 2005 Hey I'm looking for where to take the 12V1 rail reading. There's a picture somewhere. I think it's from the ATX power connector. Just want to know which wire. None of those links mentioned it unless I missed it? Share this post Link to post Share on other sites More sharing options...
Angry_Games Posted September 18, 2005 Posted September 18, 2005 +12v is your red DMM connector plugged into a yellow wire from a molex connection, and your black DMM connector plugged into a black wire (any black) on a regular molex connection Share this post Link to post Share on other sites More sharing options...
Autochthon Posted September 18, 2005 Posted September 18, 2005 I think dual rail may be a bit deceptive in this case. I believe both 12V rails are generated from a single source. I would expect the same voltage from all 12v lines. I could be wrong on this one so you may want to double check. Share this post Link to post Share on other sites More sharing options...
fenix793 Posted September 18, 2005 Posted September 18, 2005 Does it matter that my PSU has dual 12V rails? Or would they both have the same voltage? EDIT: Ah you beat me to the post. I feel like they might be different but they should be from the same source so I'm not sure. That's why I wanted to check the ATX connector. While I'm on the topic anyone know where to check on a 6800GT? Share this post Link to post Share on other sites More sharing options...
SnooP Posted September 18, 2005 Posted September 18, 2005 think dual rail may be a bit deceptive in this case. I believe both 12V rails are generated from a single source. I would expect the same voltage from all 12v lines. Not exactly, without being technical they start at the same source and then go through their own 'gateway', making the rails somewhat independant of each other. They will vary slightly. for example see: http://www.tomshardware.com/howto/20050711...esstest-23.html a bit of info about dual lines here: http://www.dfi-street.com/forum/showthread.php?t=23833 Share this post Link to post Share on other sites More sharing options...
Autochthon Posted September 18, 2005 Posted September 18, 2005 Hmm second link didn't work. I thought there was basically 1 inverter to create the 12v line on most of these PSU I guess I misundestood. Good to know. Share this post Link to post Share on other sites More sharing options...
fenix793 Posted September 18, 2005 Posted September 18, 2005 Lol you second link is this thread. Share this post Link to post Share on other sites More sharing options...
fenix793 Posted September 19, 2005 Posted September 19, 2005 Anyone got any more info on this? Share this post Link to post Share on other sites More sharing options...
rise4310 Posted September 19, 2005 Posted September 19, 2005 i call the 12v1 the cpu 12v which i read from the 4 pin atx connector by the main. use any black ground and wiggle the probe into one of the yellows. the 12v2 can be read from any other yellow. i use a 4 pin molex ususally. there isn't much difference between the 2, .04 maybe on my units. according to antec, thats the way the rails are broken, 12v1 for cpu and 12v2 for everything else. Share this post Link to post Share on other sites More sharing options...
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