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ASUS ROG STRIX Z270G GAMING Motherboard Review

By: Steven Bassiri | Socket LGA 1150/1151 in Motherboards | Posted: Jan 24, 2017 2:24 pm
TweakTown Rating: 92%Manufacturer: ASUS

STRIX Z270G GAMING Circuit Analysis Continued




ASUS's ALC1220 implementation utilizes extra amplifiers as well as Nichicon Gold series audio capacitors to improve audio quality. While the ALC1220 has its own built-in amplifier, it only amplifies a single output.


ASUS is using a Texas Instruments OPA1688A and a Texas Instruments RC4580 to add amplification to a second headphone output. Like most of ASUS's other motherboards, the audio section of the PCB is physically isolated from the rest and each audio channel is separated into different PCB layers.





ASUS is using Intel's i219v PHY to complete the Intel NIC circuit, but they also added in "LANGuard," which is designed to prevent ESD from damaging the NIC. ASUS's Wireless AC/Bluetooth solution is a Qualcomm Atheros QCNFA364A.




The motherboard uses two ASMedia ASM2142, which is ASMedia's newest generation of USB 3.1 controllers. The rear IO uses a type-C port, and ASUS has used an ASMedia ASM1543 type-C switch and CC logic chip for the type-C port.




An ASMedia ASM1061 is responsible for providing two SATA6Gb/s ports. The ASMedia ASM1074 is a USB 3.0 hub, which takes a single USB 3.0 port from the PCH and outputs four ports for the two internal USB 3.0 headers. The second USB 3.1 controller is used for the new front panel USB 3.1 header.




ASUS has a custom chip labeled AURA onboard, I assume this is for the AURA RGB LED function. Each of the RGB LED headers gets a Texas Instruments TPS2592AA, which is an eFuse designed to protect the motherboard from incorrect RGB LED header usage.




The main SuperIO on the motherboard is a nuvoTon NCT6793D. A custom ASUS chip labeled TPU is responsible for extra features such as fan control or custom overclocking features, it's an embedded controller that ASUS can program for whatever they want. To provide HDMI from the iGPU, vendors much use a level shifter such as the ASMedia ASM1442K found here. To switch x8 bandwidth between the first and second PCI-E x16 slots, ASUS uses four ASMedia ASM1480.

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