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How relevant are VRMs (phases) for AM4 motherboards?

cdawall

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You see more high phase count boards for repair because low end boards with low phase count mosfets go in the trash. It cost more to repair one than it is worth. On top of that low end boars end up in low end systems with low end CPU's. Less power draw, less heat, no overclocking, less prone to abuse and failure.

Even Dell uses h/z170/270 boards in their products with i7's.

We are also seeing a lot of high end boards move to an all in one solution so there is no longer a high and a low side. Same thing on graphics cards.
 
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The problem with mosfets is that amps output is directly connected to temperature at which they operate. And they tend to operate at fairly high temperatures even under perfectly normal conditions.

Made up example:
If mosfets rated at 80A at 60°C, will only output 45A at 80°C. At 100°C it will only output 20A. And then you have a problem...
 
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VRM's are always relevant across any platform. If you having cleans table, steady power that is.
 

cadaveca

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VRM's are always relevant across any platform. If you having cleans table, steady power that is.
but on Z270/Z170, because power draw is so low on 24/7 OC (125~150W), it isn't as important as on X99 or AM4, where OC power consumption can reach 300W.
 
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Even Gibbo, Overclockers shop said the best X370 to get would be the crosshair and Taichi, both with strong power phases..
 
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Relevant for any mobo. It's the difference between 4.6 on air and 5.0. Cleaner, higher amperage power delivery is always best. I'm stuck at 4.6 on this 8 phase mobo, on a 16 phase I could prob get 4.8 before water cooling....
5.0 or higher on custom water cooling....
 
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Relevant for any mobo. It's the difference between 4.6 on air and 5.0. Cleaner, higher amperage power delivery is always best. I'm stuck at 4.6 on this 8 phase mobo, on a 16 phase I could prob get 4.8 before water cooling....
5.0 or higher on custom water cooling....
.... maybe... you are putting too much into it. Intel needs it, even using x79/x99, much less than amd. I'd bet you are limited by voltage or temps to 4.8+ before your board holds you back. ;)
 
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