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**ceewi1** · 10-04-2007, 10:19 AM

Do you have a multimeter? You can measure the 3.3V rail from a number of places, although it's a little more difficult on a unit like the Corsair 620W since the cables aren't colour coded.

You can either take the reading from:

The back of the 24pin ATX main connection (google a wiring diagram to see which hole to use), or
The modular interface coming from the PSU, or the back of any cable coming from it. The lowest pin should be the 3.3V rails (where you'd connect the positive terminal of your multimeter), the second lowest the 5V rail, the next two (square connectors) are ground, where you'll connect the negative terminal of your multimeter, and the top one the +12V.

10-04-2007, 10:19 AM	#3 (permalink)
ceewi1 Moderator Join Date: Dec 2005 Location: Melbourne, Australia Age: 21 Posts: 5,297	Do you have a multimeter? You can measure the 3.3V rail from a number of places, although it's a little more difficult on a unit like the Corsair 620W since the cables aren't colour coded. You can either take the reading from: The back of the 24pin ATX main connection (google a wiring diagram to see which hole to use), or The modular interface coming from the PSU, or the back of any cable coming from it. The lowest pin should be the 3.3V rails (where you'd connect the positive terminal of your multimeter), the second lowest the 5V rail, the next two (square connectors) are ground, where you'll connect the negative terminal of your multimeter, and the top one the +12V. __________________ CPU: Core 2 Duo E6600 / MOBO: Gigabyte 965P-DS3 / GPU: Gigabyte HD4870 RAM: 2GB G.Skill F2-6400CL4D-2GBPK / HDD: 2TB Total HDD / PSU: Antec NeoPower 480W Cheap PSUs - 2% of system costs, responsible for 28% of system deaths As Sealed Stick was removed, lost or damaged, it shall be out of warranty validity. - The "Warranty void if removed" sticker on numerous CoolerMaster PSUs. Useful PSU Guides