The motherboard reveals itself without heat sinks.
The motherboard VRM is 8+2 phases. It uses the same UPI uP9508Q PWM controller we found on the Gaming Pro Carbon, which is rated for a maximum of 3+2 phases, but it seems that it's in a 4+1 phase mode somehow. The motherboard uses new UBIQ MOSFETs for the high-side and low-side MOSFETs. The QN3107 and QN3103 are used as high-side and low-side MOSFETs, I estimate they can do around 25A of output, in the end, each, but they have insanely high ratings over 100A for burst operation.
We will see how they do in the thermal testing section. I also found that each set of two phases had one driver, so they are doubling up inductors and MOSFETs for each PWM phase to get 8 phases. The memory VRM uses one phase and a real phase doubler for two phases in a two low one high-side MOSFET configuration.
The uP1961 is used as the doubler and dual driver. We also found a Richtek RT9553B high accurate current/voltage sensing and protection IC near the PWM controller, which might be how MSI is getting one extra phase-out of the CPU side (maybe it helps combine two real phases into one).
The VCCSA VRM use a single phase Richtek RT8125E PWM controller with integrated driver and the same UBIQ MOSFETs as the CPU VRM. The memory VRM uses a Richtek RT8125E PWM controller with integrated driver and a two low one high-side MOSFET setup using NIKOS N-channel MOSFETs.
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:
United States: The MSI Z370 TOMAHAWK (Intel Z370) Motherboard retails for $XXX at Amazon.
United Kingdom: The MSI Z370 TOMAHAWK (Intel Z370) Motherboard retails for £XXX at Amazon UK.
- Page 1 [Introduction, Specifications, and Pricing]
- Page 2 [Packaging and Z370 TOMAHAWK Overview]
- Page 3 [MSI Z370 TOMAHAWK Circuit Analysis]
- Page 4 [MSI Z370 TOMAHAWK Circuit Analysis Continued]
- Page 5 [BIOS and Software]
- Page 6 [Test System Setup]
- Page 7 [Overclocking]
- Page 8 [CPU, Memory, and System Benchmarks]
- Page 9 [System IO Benchmarks]
- Page 10 [Thermal Imaging and Power Consumption]
- Page 11 [What's Hot, What's Not & Final Thoughts]
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