Originally Posted by Wirerat
It doesnt take a super powerful VRM to deliver and average of 97 watts.
An i5-4670 runs ~60 amps. Yea, "only" ~60 amps. That's easy right?
Delivering 500W can be done with 1 tiny MOSFET (120V@4.16A, easy. That's how they make SSRs). Wattage is not the issue here. CPUs are high current
20amps per phase is serious power levels. Many overclocking boards are designed to hit peak efficiency at ~10-15A per phase with overclocked power levels, and this is WITH heatsinking, etc.
Pulling 20 amps per phase, is the sort of power we're pulling when we overclock an FX-8350 to the moon (5ghz+) on an 8+2 phase board. In other-words, an H81 board with 3 phase power running an i5, is running just as hot (if not hotter, since it has no HSF and is likely made from lesser quality components) as the HEAVILY overclocked PileDriver machine. Choosing to run the snot out of a machine is one thing, buying a motherboard that runs the snot out of itself just to run at "stock" settings, is problematic IMO. I'll pass.