X370-Gaming K7 Circuit Analysis Continued
Two Realtek ALC1220s are used on this motherboard, each has an integrated headphone amplifier on the 120dB output, so GIGABYTE uses two so that the rear port and front header are amplified. Nichicon Gold series audio capacitors and a physical PCB divide help improve audio quality.
The motherboard features dual NICs, one is the Intel i211At, and the other is the Killer e2500.
The ASMedia ASM1143 is used to provide the two extra USB 3.1 ports. To Pericom Pi3EQX USB 3.1 repeaters are used to improve the USB 3.1 signal from the chipset, as it is far away from the rear IO panel.
Overclocking the bus speed on AM4 motherboards require a separate clock generator, and here GIGABYTE uses the ICS9FGL1214AKLF. USB DAC-UP allows you to control the voltage of the USB ports and GIGABYTE is using re-drivers and individual VRMs to power the internal USB 3.0 headers.
An ITE IT8792E is used as one of the programmable embedded controllers; they can be used for extra features such as fan controls. I also found that there is a secondary embedded controller located right below the bottom PCI-E x16 slot, I am not sure what it does, but perhaps it helps with the RGB LEDs or provides, better fan control.
The IT7236AFN provides RGB LED control capabilities. The AX370-Gaming K7 is one of the only AM4 motherboards with dual BIOS ROMs.
The ITE IT8686E is used as the SuperIO on the motherboard, it provides PS/2 as well as other hardware related features. The motherboard features many ASMedia PCI-E 3.0 quick switches. Four of them switch x8 between the first and second PCI-E x16 slots, two switch M.2 bandwidth to the U.2 slot, and two more switch PCI-E bandwidth between the x1 slots and the x4 slot at the bottom.
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- Page 1 [Introduction, Specifications, and Pricing]
- Page 2 [Packaging and X370-Gaming K7 Overview]
- Page 3 [GIGABYTE X370-Gaming K7 Circuit Analysis]
- Page 4 [GIGABYTE X370-Gaming K7 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]