Found it. The orange wires in the big connector are the +3.3 V lines. There are four and three of them have low voltage right now although it is running better today than the image in my first post.
Well I went ahead and put a new PSU and the above is the result. I looks like the old one is showing its age. At least it didn't fail catastrophically like previous PSUs in the past. I will keep it around as a spare in case of emergency since it still works.
What are the two voltages in the bottom? The memory controller thing stayed at about the same value and the other keeps going up and down over time both with the old and new PSU.
The left one is for the memory controller as you said. The right one is the voltage for the CPU itself. If it's dropping under load, you're seeing the effects of Vdroop. -- KI6RIT
koitsu Premium,MVM join:2002-07-16 Mountain View, CA kudos:19
reply to printscreen I'm in agreement with FizzyMyNizzy ; I'd recommend replacing the PSU first. If the problem continues, replace the motherboard. Those are the only two components which could explain this behaviour (specifically since you're using Intel's native utilities on an Intel native board which calculate voltage/etc. correctly). -- Making life hard for others since 1977. I speak for myself and not my employer/affiliates of my employer.
Yup, I did that already. Since the existing PSU was a bit old already I just went ahead and got a new one today. I only saw the voltage error message a few times during a period of one hour or so and was actually the first time I paid attention to voltage levels. The error didn't show up again but the +3.3 V always kept in the yellow on the low side at times venturing into red briefly. With the new PSU all three voltages on top went up above their nominal value but the lower was didn't change.
reply to printscreen Actually, now that I look at the before and after pictures, the CPU voltage fluctuation is probably caused by SpeedStep. When the CPU is idle, it lowers its frequency and voltage, reducing power consumption and heat. You can check for this by running CPU-Z and watching the core speed and voltage sections. -- KI6RIT
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