DPete27 wrote:I agree with why VRM is still needed on Haswell boards and why manufacturers are still using phases as a marketing hype to differentiate their products from their competitors. What I don't understand and what I'd like to see in reviews is how many phases are really required. With the on-chip regulation, I have to believe fewer mobo phases are required (just need get the power to the CPU). Sure, heat will always be a factor (how much?), but now it doesn't matter how "smooth" the power delivery from the mobo is because the on-chip VRM can handle that better than any previous on-board solution could. Also, what about switching frequency differences between on-chip and on-board VRM?
Wirko wrote:Another thing is interesting here. Higher voltage means lower current, which in turn means fewer CPU pins for power. Socket 1155 has an incredible number of power pins, maybe one half of all pins (see here, all pins starting with "V"). Socket 1150 may well cut this number by half, leaving a lot more pins for the buses and other things.
Geo2160 wrote:Well, I managed to find this, which answered most of my questions: