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GIGABYTE X99-Ultra Gaming (Intel X99) Motherboard Review

By: Steven Bassiri | Socket LGA 2011 in Motherboards | Posted: Jul 13, 2016 2:15 pm
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TweakTown Rating: 91%Manufacturer: GIGABYTE

Circuit Analysis

 

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Things just got more interesting.

 

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GIGABYTE is using a true 8-phase voltage regulator exclusively powered by International Rectifier. The inductors are the same 76A Cooper Bussman COILTRONICS FLAT-PAC high current power inductors found on GIGABYTE's earlier X99 motherboards. The capacitors are black FPCAPs; I assume they are rated at 10K hours.

 

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GIGABYTE is using the latest International Rectifier (owned by Infineon) IR3580 true 8-phase digital PWM. They are also using eight IR3556; 50A fully integrated power stages that include their driver, high-side MOSFET, and low-side MOSFET in a single package. The motherboard also has extra pins in the socket that could enhance overclocking of cache and memory; these pins are powered by a special array of linear regulators located below the first 16x PCI-E slot and controlled by an IT8792E embedded controller.

 

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Each four DIMMs gets a two-phase DDR voltage regulator driven by IR3553 (40A) integrated PowIRstages and controlled by an IR3570 3+2 phase digital PWM. The DDR4 VPP rail for each four DIMMs is using a single IR3553 and is controlled by the same IR3570 used for the main DRAM voltage.

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