Technology content trusted in North America and globally since 1999
8,426 Reviews & Articles | 64,562 News Posts

ASRock Fatal1ty Z370 Professional Gaming i7 (Intel Z370) (Page 3)

By Steven Bassiri from Feb 3, 2018 @ 8:00 CST
TweakTown Rating: 94%Manufacturer: ASRock

Circuit Analysis


The Fatal1ty Z370 Professional Gaming i7 shows us the goods when the heat sink comes off.


The VRM on the Fatal1ty Z370 Professional Gaming i7 is in an 8+4 phase configuration for the CPU core and the iGPU phases. The Intersil ISL69138 is used as the PWM controller and supports up to 7 phases on two rails (4+2 here). The main CPU rail gets four PWM channels, and the iGPU rail gets two PWM channels.

Each phase gets a 60A inductor and uses Sinopower SM7341EH rated around 25A each, just like NexFETs and Fairchild semiconductor dual N-Channel MOSFETs that are popular. Two APW8720 PWM controllers with integrated drivers are used for the VCCSA and VCCIO single phase VRMs that use the same dual-N channel MOSFETs as the main CPU VRM.


Each PWM channel seems to output to two ISL6596 N-channel MOSFET drivers for the VCore and iGPU, each phase gets its own driver, but there is no doubler, so two phases will be on at one time instead of just one. The memory VRM uses a UPI uP1674P PWM controller with integrated drivers and outputs to the Sinopower SM7341EH dual N-Channel MOSFETs as used in the CPU VRM.

PRICING: You can find the product discussed for sale below. The prices listed are valid at the time of writing, but can change at any time. Click the link below to see real-time pricing for the best deal:

USUnited States: The ASRock Motherboard Motherboards Z370 Professional Gaming I7 retails for $433.04 at

UKUnited Kingdom: The ASRock Fatal1ty Z370 Professional Gaming i7 - ATX Motherboard for Intel Socket 1151 CPUs retails for £208.73 at

CACanada: The ASRock Fatal1ty Z370 Professional Gaming i7 (Intel Z370) retails for $590.64 CAD at

We openly invite the companies who provide us with review samples / who are mentioned or discussed to express their opinion. If any company representative wishes to respond, we will publish the response here. Please contact us if you wish to respond.

Related Tags