The PSU has 2 12V rails listed in its specs on the side, however both show continuity between them when I tested it with my multimeter. I then tested continuity between the positive from the fan and 12V1 and it also showed continuity. The fan is rated at 0.7A. This is a higher load than the 22 Ohm 10W resistor I was originally going to use (0.55A). Should this provide enough of a load? Would it be necessary to put a load on one rail or the other if they are both connected internally anyway?
When I started it up with no other load connected, the grey wire came to +5V which I believe means power is OK. Is this a good sign that it likely doesn't need an extra load?
Finally, should I also put a dummy load on the +5V rail?
I was able to dig up these specs, although they aren't from the manufacturer so it's hard to tell how accurate they are. They do suggest that extra load might be required though.
- +3.3 - 0.3 A
- +5V - 0.5 A
- +12V1 - 1A
- +12V2 - 1A
Although given that both 12V rails seem to be connected I'm not sure if that means 1A each or just 1A for both.