ASRock Fatal1ty H370 Performance Review | Level One Techs

This is a companion discussion topic for the original entry at

I would like to learn more about NVMe heating vs cooling as this is the first time I am hearing about these things. Perhaps the forum can help me understand what NVMe is and why it shouldn’t be too cold?

Some more details about the vrm implementation on this board,
for the guru´s that wanne know.

Like in the video allready explained, the vrm is a 8+2+2 phase design.
For the main cpu input rails.
Intel cpu’s for the mainstream platforms need 4 major imput rails,
namelly Vcore VCC, Igpu VCCGT, System agent VCCsa, and io VCCio / Qpi-vtt.
Now lets gets more into the details of this vrm.

Main Vcore and IGPU vrm.

  • Pwm: The main vrm is controlled by a UPi semiconductor uP9521P pwm, running in 4+2 phase mode.
    4 phases being doubled to 8 using uP1961 doublers with intergrated drivers.
    And the +2 phases are controlling the igpu VCCGT using the same uP1961 in single phase driving mode.

  • Mosfets: Each phase on the vcore vrm gets One Sinopower SM4337 High-side and One SM4336 on the low side mosfets per phase.
    And the Igpu gets One SM4337 on the High-side and Two SM4336 mosfets on the low side.

  • VCCSA and VCCio each get their own single phase, and consists of the same mosfets as the vcore vrm.

  • Inductors: 50A

  • Caps 12K FP.

Memory vrm:

  • The memory vrm is a single phase configuration,
    controlled by a Richtek RT8120 pwm.
    And is powered by 2x SM4336 low side mosfets.