I'm upgrading my 8800gt card (1 x 6-pin connector) to a gtx 560 (2 x 6-pin connector), so it's going to be drawing more power. My PSU is a 1000w unit which came with my dell t7400 workstation, so in theory should be no problem.
Before I connect the 560, I want to be sure that it's outputting the correct 12v voltage for the card from each 6-pin connector.
Here are diagrams of the connectors from my system user manual:
And here is a photo of the multimeter I have:
Having never used a multimeter or measured voltage, I could really use some advice please:
1. where should the red and black leads plug in?
2. what setting should I put the dial on?
3. what is the process for testing the voltage on the pins for those connectors?
The more detail the better, really don't want to fry anything or myself!
First, that's a very inexpensive meter so don't expect too much from it. Plug the black lead into the "comm" slot on the meter and the red into the one just above. Do not set the dial above 20VDC. Higher settings will affect the accuracy. When the supply is running with the connector not plugged into anything you may see a voltage higher than 12VDC. That's because there's no load. It's easy to access the connector pins when the connector isn't plugged in as you describe. I would also check the voltage under load by inserting the probes into the connector pin cavities from the rear. Just be careful not to slip and break something or touch something you shouldn't.