The actual component choices in the whole VRM have big implications in running temperatures and how much power the VRM is capable of handling. It is important to understand that more power phases does not necessarily mean a better VRM.
Better stability of power for the CPU can, to a limited extent, reduce the needed voltage for overclocking stability, improving CPU temperatures and theoretical lifespan. A higher power output ability reduces the risk of overloading the VRM, which could make the system shut down or slow down the CPU. Cooler operation improves lifespan of the VRM and reduces the risk of overheating, a potential concern for overclockers. The more power your CPU uses, the hotter the VRM runs. If we assume the same components are used, then the more phases you add, the cooler each phase runs, the more power the VRM can put out, and the more stable the CPU’s voltages get. The capacitors are the other component, usually small cylinders in shape, next to the chokes. The chokes on modern motherboards usually appear as small black or grey cubes, which sometimes have a small differently-colored section in the middle. The transistors may or may not be covered by a heatsink, as they can get very hot and tend to be more temperature-sensitive. Your baseline power phase is composed of two transistors, a “choke” and a capacitor. Heavy RAM overclocking is done by few people, and RAM uses much less power than the CPU, hence why it’s often ignored.Ī VRM is composed of separate power “phases”. However, it’s usually only the CPU’s VRM that is focused on.
The RAM also has a much smaller, simpler VRM next to the RAM slots. Were it not for the VRM, your CPU wouldn’t even work! The VRM’s job is to make the power from the power supply usable for the CPU, and help stabilize it, so to speak. On every motherboard exists a circuit near the CPU called the voltage regulator module, or VRM. The VRM: Important in Role, Yet Often Forgotten So today, we will introduce the concept of the VRM and these so-called power phases as simple and straightforward as possible, so that you can easily discern what a motherboard product page is telling you (and when it matters). Being a somewhat technical topic, VRMs aren’t an easy topic to get into. Often, motherboard product pages and online forum users mention a motherboard’s VRM and how many power phases it has.
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