Originally Posted by Scotty99
Why are people spending so much on motherboard? That completely negates the savings you are getting from the 1700. These chips dont need much in terms of VRM's, in fact i bet you money you can get the same clocks on b350 boards.
First, let me say that i never bought a motherboard that costed over 80 EUR, except for 1 in socket A and it was semi-defective (ASUS). But i also always buy 2 cheap motherboards, instead of 1 expensive, so that i have a spare. Now to your question. B350 motherboards may or may not be able to overclock to 4Ghz, depending on their VRM quality. I am no prophet, but i will use these:
^ This power consumption wattage, to me seems too low, cause my undervolted [email protected]
, draws 220W in Prime95. BUT, it shows that Ryzen consumption, is on par with FX8370. Either way you cut it.
So, in practice, a stock 1800X, draws the same power as an [email protected]
Meaning, a Ryzen overclocked to 4Ghz, will draw more. Going by AM3+, you don't want 4 phase VRM for Ryzen 95W. Some motherboards will run them, some with poor VRM may throttle, but, you certainly want more than 4 phases for CPU. Cause with 4 phases, the VRM will be getting very hot, you may have to add active cooling. Those who buy the expensive motherboards won't have to. To go beyond 3.8Ghz, this problem will only become worse. So, it's not just about whether you CAN go to 4Ghz, but also, how easily and on what temperatures on your VRM. My Asrock 970 Extreme3, which is 4 (mediocre) phases, can get an FX to 4Ghz, but, when i measured the back of the motherboard at the VRM area with IR thermometer, temp was at 95C. So i added active cooling both on VRM and on the back, to bring it down to about 80C if i remember. If you get an AM4 x370, you will simply not have to worry about these things. Plus, you pay for extra ports, lights, bells and whistles.
EDIT: P.S: I don't even remember what VRM most B350 motherboards have as phase count and even more, i don't know how much amperage each phase gives. But if it's anything like the phases of AM3+, you want either a GOOD 4 phase at least or better, MORE. To avoid heat issues. On the other hand, if one intends to stick to 1700 stock speeds, i don't see there will be any problem.