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Help Connecting PSU to Motherboard

F

Fleshie

Junior Member
Hi Guys,

I have a question about connecting my power supply to my motherboard.

Here's my setup:

Intel E6600
Asus P5B Deluxe
Seasonic S12 550W PSU

On my motherboard there's a 24-pin connector, which I have no problems with - there's only one of these things on my PSU, so I'm connecting that one big plug to that one connector.

However, there's this 8-pin EPS connector on the motherboard as well, which by default, has 4 of the pins covered up by some cap. Now my PSU has both a 4-pin 12V AUX connector as well as a 8-pin 12V EPS connector. Can somebody tell me which one am I supposed to connect up to the motherboard and why? Should I connect just the 4-pin 12V AUX, or remove the cap and plug in the 8-pin 12V EPS connector?

Thanks for any help.
 
Hi, I did read the manual but it doesn't really tell you in which case you should connect what. It just says that if you want to connect a EPS12V, remove the cap, otherwise connect the 4-pin. However, I don't even know which one I *should* be connecting - that is my question.
 
Originally posted by: Fleshie
Hi,

I've connected the 8-pin instead of the 4-pin. But now I'm getting weird vCore and cpu temperature spikes .. though i'm not 100% sure it's related to switching the 12V connectors.

I've posted the message here if anyone can offer any help:

http://forums.anandtech.com/messageview...atid=28&threadid=2036334&enterthread=y

Thanks a lot.
Click to expand...

welcome to the forums - first off - don't double post, especially in a non-related area - that will piss off the mods.

2nd - do you have a dmm to verify the V changes? many times onboard readouts are a bit off from either temp or V, so take what they tell you with a grain of salt. and also please quantify these spikes - are they .05-.1V or something like 2V and with temps, how far are they jumping?
 
Hi,

Which thread are you referring please for the double post.

I haven't used a dmm to verify the voltages... but i'm not as concerned about the voltages values as I am with the spikes that have occurred - so far it has happened twice.

First time, from asus probe it read 0.01V for the vcore which just can't be right. There was no temperature change, but coincidentally (or maybe not) at the exact same time I got the warning pop up message from Asus probe, I was trying to load up google page but couldn't with a page not found error which never happens. I wonder if it's even related....

Second time, I noticed the CPU temperature suddenly shot up 75C (from asus probe and speedfan), and then the vCore spiked to 2.1V (asus probe, but not speedfan). Odd thing is that the core temperatures were fine (both at 28C - speedfan, tat and coretemps). When I rebooted the machine and went into BIOS, vcore and CPU temperatures were fine... booting back into windows, all readings were fine again.

Any ideas? Thanks a lot.
 
Originally posted by: Fleshie
Hi,

Which thread are you referring please for the double post.

I haven't used a dmm to verify the voltages... but i'm not as concerned about the voltages values as I am with the spikes that have occurred - so far it has happened twice.

First time, from asus probe it read 0.01V for the vcore which just can't be right. There was no temperature change, but coincidentally (or maybe not) at the exact same time I got the warning pop up message from Asus probe, I was trying to load up google page but couldn't with a page not found error which never happens. I wonder if it's even related....

Second time, I noticed the CPU temperature suddenly shot up 75C (from asus probe and speedfan), and then the vCore spiked to 2.1V (asus probe, but not speedfan). Odd thing is that the core temperatures were fine (both at 28C - speedfan, tat and coretemps). When I rebooted the machine and went into BIOS, vcore and CPU temperatures were fine... booting back into windows, all readings were fine again.

Any ideas? Thanks a lot.
Click to expand...

i am referring to the post that is quoted in my response......???? 😕

as far as the issues, have you run the machine w/ prime95 and memtest to verify that it is stable? getting misc errror in software like that is pretty common. i have had programs claim my 5V or 12V line is way off, but when i put a dmm on it, it will be rock steady right where it should be. you can usually pick of a dmm @ sears for ~$20 or so all the time - a good little investment and a way to put your mind at ease.

but, definately run memtest and prime95 to make sure the machine is stable.
 
i am referring to the post that is quoted in my response......????
Click to expand...

but that wasn't a double post really. like the thread i quoted is actually a different problem (which i put in a different but correct area i think) than the one in this thread, but the only reason why i linked it in this thread is b/c the problem from this thread may have caused the other problem. hope i wasn't too confusing...

as far as the issues, have you run the machine w/ prime95 and memtest to verify that it is stable? getting misc errror in software like that is pretty common. i have had programs claim my 5V or 12V line is way off, but when i put a dmm on it, it will be rock steady right where it should be. you can usually pick of a dmm @ sears for ~$20 or so all the time - a good little investment and a way to put your mind at ease.
Click to expand...

I've ran memtest on it for 48 hours - no errors... orthos for 24 hours - no errors. so it seems functioning pretty stable despite these anomalies. yea i'm looking to get a dmm... but i can't find these cheap ones ppl keep talking about. the sears i went to didn't even carry any dmms and the radio shack had ones for 40$ cheapest though on their website they have one for 20$ which i couldn't find.

Thanks for help.
 
Originally posted by: Fleshie
i am referring to the post that is quoted in my response......????
Click to expand...

but that wasn't a double post really. like the thread i quoted is actually a different problem (which i put in a different but correct area i think) than the one in this thread, but the only reason why i linked it in this thread is b/c the problem from this thread may have caused the other problem. hope i wasn't too confusing...

as far as the issues, have you run the machine w/ prime95 and memtest to verify that it is stable? getting misc errror in software like that is pretty common. i have had programs claim my 5V or 12V line is way off, but when i put a dmm on it, it will be rock steady right where it should be. you can usually pick of a dmm @ sears for ~$20 or so all the time - a good little investment and a way to put your mind at ease.
Click to expand...

I've ran memtest on it for 48 hours - no errors... orthos for 24 hours - no errors. so it seems functioning pretty stable despite these anomalies. yea i'm looking to get a dmm... but i can't find these cheap ones ppl keep talking about. the sears i went to didn't even carry any dmms and the radio shack had ones for 40$ cheapest though on their website they have one for 20$ which i couldn't find.

Thanks for help.
Click to expand...

if it ran those to program for that long with no issues, i wouldn't worry about it. maybe let something like 3dmark loop for a while to get the gpu current up to and see how that pans out. other than that i would just go on and not worry. most of my builds anymore i don't even use a motherboard monitor program because of the anomolies
 
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