I build D525MW systems all day long. Was there active or passive cooling in the case? I found that even at idle, when the D525MW is passively cooled (fanless) in a 3 cubic liter case, it can reach temps up to 114 F, but the same system in a slightly bigger case with active cooling can be 30 degrees F less. A regular CPU load is typically 50 to 70% in my application. But I did not have any NM10 chip issues thus far; although I've noticed you can fry eggs on the NM10 chip.