Comparative analysis of Phase AUX Power between models 1 and 2.
Comparative analysis of Phase AUX Power between models 1 and 2.
The distinction lies in the power levels: 1 represents a lower phase AUX output, while 2 indicates a higher phase AUX output.
they apply more current than the other, but once it starts rotating it requires less energy so it changes to a more efficient power source. however, the one using less power might not have enough to keep it going. unless we're discussing something different? edited September 30, 2023 by thrasher_565
Additional phases can lead to steadier output voltage and quicker responses to power changes, though they might reduce efficiency. It doesn't always mean higher current usage—for instance, a single phase could use 70-90A while another board employs two 40A units in the dual phase setup. An auxiliary voltage is meant for non-critical components, those with stable power needs, and should not require high current. Therefore, choosing a motherboard shouldn't hinge heavily on whether it's one or two phases.
I was looking into 16+1+2 phase designs. The VRM section I grasp is that the 8 and 1 are in parallel, while the integrated graphics use a single phase. The two auxiliary power supplies relate to the 12V input, right? You mentioned confusion about 8+4 versus 8+8 connectors—does the former use one auxiliary phase and the latter two phases? I noticed more 14th generation boards now include dual-phase auxiliary power. Are you concerned this could affect the Asus Proart Z790 Creator when running a 14900K at full boost, especially since the packaging claims it's Next Gen ready?
No, I think aux has something to do with powering the pci-e controller and/or other system-on-chip controllers but I'm not sure... I didn't keep up with these minor rails. The 8 phases for CPU are not in parallel, they can run all at the same time, but usually they're meant to alternate, two - three phases work for some time for example, then others start to work and let the others cool down a bit, and so on... each phase can do let's say up to 80A of current, but they may be most efficient at 30-40A, so instead of using just 4 phases at 50A to produce 200A of current, they can run 6-8 phases at 30-40A to get better efficiency... if you run all four at same time for 10ms then stop for 1-2ms and rely on the energy stored in inductors and capacitors to provide smooth output voltage, then you may get fluctuations in the voltage, like for example 1.5v when the phases all run and the capacitors are topped out and then during those 1-2ms of off time, the voltage may drop to 1.48v until the phases restart and top up the inductors and capacitors. If you alternate between phases, there's never a "dead" time, and a few phases are always ready and working to top up and maintain the voltage to the level the cpu asks.