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Rainbow Six
10-21-09, 06:42 AM
My PSU did not come with any instructions and I could not find them online either.
This is the PSU I have.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817184009&cm_re=a-top-_-17-184-009-_-Product

1) My 3V rail shows 3.37. Is this normal?

2) My PSU has dual 12v 4pin connectors. Does it matter which one is used?
torin3
10-21-09, 11:34 AM
My PSU did not come with any instructions and I could not find them online either.
This is the PSU I have.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817184009&cm_re=a-top-_-17-184-009-_-Product

1) My 3V rail shows 3.37. Is this normal?

2) My PSU has dual 12v 4pin connectors. Does it matter which one is used?

1)The 3V rail is actually a 3.3V rail, so 3.37V is within spec.

2) The 2x4pin connectors are keyed so that you can't plug in the wrong one.

Take a look here http://www.legitreviews.com/images/reviews/1015/dfi_790gx_m3h5_8pin.jpg

Just gently try both, and plug in the one that fits.
Rainbow Six
10-21-09, 06:15 PM
Okay thank you. My computer has been running for two months almost, so I assume I did everything right.

What is the normal range for the 3.3V rail?
torin3
10-21-09, 06:57 PM
Okay thank you. My computer has been running for two months almost, so I assume I did everything right.

What is the normal range for the 3.3V rail?

±5%, or ±0.165V. So you can go from 3.135V to 3.465V and still be in spec.

This may help out a bit http://en.wikipedia.org/wiki/Atx

It lists the voltage specs, and other useful stuff.
larrymoencurly
10-22-09, 10:16 PM
2) My PSU has dual 12v 4pin connectors. Does it matter which one is used?I always check the colors of the wires because each voltage has its own color. A 4-pin connector with two yellow wires (+12V) and two black ones (ground) is for CPU power, but if the connector has black, orange, red, and yellow wires, it's part of the 24-pin main motherboard power connector. The connectors are keyed differently, but in the case of my Ultra V-Series and a cheap mobo, the fit was so loose that those 4-pin connectors could be interchanged (and Ultra's instructions said to plug in the 24-pin connector backwards).

power supply connector photos (http://www.playtool.com/pages/psuconnectors/connectors.html)