Originally Posted by sazon74
+one on what Undervolter said vrms will get very hot above 70c and when the caps get to hot it will throttle down the cpu . Am running a fx8300/msi 970 max iv got is 4.9 but vrms where near 80c thats with a fan on the vrms and open case but i run it at 4.5 24/7 vrms temps are under 60c with fan on vrms and one 80m fan at the back of the board helps alot.
60C is good. The problem is this. Theoretically, almost all mosfet manufacturers, state their chips can survive 120C. But empirical evidence as well as mobo manufacturers' BIOS limits, show that prolonged heat at high temperatures, kill the mosfets well below the 120C peak temperature. In the MSI Gaming series, the VRM is the hidden achilles heal, because Nikos is notorious for producing mosfets with decreased resistance to heat. This is, i suppose, why on MSI Gaming series websites, you see all the boasting about the chokes, the caps, but never the mosfets. Military class and all the marketing boasting, but never on the mosfets. Because they are Nikos. And unfortunately, in AM3+, the VRM is the most crucial part of the motherboard, as there is lot of power, lot of heat and the one thing that has the most probabilities to fail and potentiall fry the CPU with it, is exactly the VRM. So it's like "military class" in other things, and "farmer class" in VRM.
Which is why MSI has put lots of mosfets per phase, to counterbalance the lack in quality. But when things get hot, quantity can sometimes fail you. Quality is better. Quantity is fine when you don't push things too hard.