Technology content trusted in North America and globally since 1999
8,398 Reviews & Articles | 64,190 News Posts

GIGABYTE X399 Designare EX Motherboard Review (Page 3)

By Steven Bassiri from Oct 26, 2017 @ 15:55 CDT
TweakTown Rating: 93%Manufacturer: GIGABYTE

Circuit Analysis


The X399 Designare EX reveals its secrets.


We get a true 8-phase VRM. Eight IR3556 are used, each is a 50A fully integrated (driver plus FETs) PowIRstages, and controlled by a fully digital IR35201 PWM controller in 8+0 phase mode. The inductors are rated for a maximum saturation current of 76A, and tantalum POSCAPs on the rear complete the LC (inductor/capacitor) filter circuit.


The SoC VRM is controlled by an IR35201, which handles two IR3556M 50A power stages and the same 76A inductors. The memory VRM uses an IR3570 3+2 phased digital PWM controller and two IR3553 (40A) PowIRstages for the main DDR4 voltage rail and one IR3553 for the DDR4 VPP.


Here we have the second memory VRM that uses the IR3570 digital PWM in a 2+1 phase mode. It controls two phases that make up the main DDR4 voltage, and one phase that most likely is for the DDR4 VPP rail (overkill). The Richtek RT8288A controller is used for GIGABYTE's DAC-UP 2 feature, which allows you to disable USB 3.0 voltage and only allow for data, or even boost the voltage above 5v.

    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: Find other tech and computer products like this over at Amazon`s website.

    United Kingdom: Find other tech and computer products like this over at Amazon UK`s website.

    Canada: Find other tech and computer products like this over at Amazon Canada`s website.

    We at TweakTown openly invite the companies who provide us with review samples / who are mentioned or discussed to express their opinion of our content. If any company representative wishes to respond, we will publish the response here.

Related Tags