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MSI X99A Gaming 9 ACK Motherboard Review

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Under The Hood

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CPU PWM is handled by an Intersil ISL6388, 6-phase VR12.5 compliant controller capable of up to 2MHz per phase but utilized in a 4-phase design here and phase is doubled using four Intersil 6611A drivers. OnSemi 4C05N and 4C08N MOSFETs are used with “Super Ferrite” chokes and tantalum capacitors.

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Powervation PV3203 dual-phase PWM controllers are used for memory power (located at the back of the PCB) with a pair of OnSemi 4C05N and one 4C08N MOSFET as well as per phase.

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Like any good current generation motherboard, there is a redundant BIOS that will kick in if one fails or is corrupted. On the MSI X99A Gaming ACK, there a pair of Macronix 25L12873F serial flash for this function.

 

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ASMedia ASM1464 signal repeater switches are used for the USB 3.0 onboard headers. These chips optimize the signal performance and prevent signal degradation over long distances.

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An ASMedia ASM1142 host controller provides USB 3.1 support, taking one available PCI-E x1 lane and providing a pair of USB 3.1 ports at the back panel.

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A VIA VL805 host controller provides four USB 3.0 ports in the rear, taking one available PCI-E x1 lane.

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Under the Streaming Engine cover sits the AverMedia hardware video capture card. Windows recgonises the capture card as a Avermedia C353. However, the Avermedia software doesn’t show there is a valid capture card in the system. This card is has a maximum video capture of 1920×180 @ 30 fps.

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A single wired network card is available on the MSI X99A Gaming 9 ACK and is provided by the Qualcomm Killer LAN E2205. The NIC supports 10/100/1000 network speeds and is auto switching.

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The Nuvoton NCT6792D+ is the Super I/O chip that is used to monitor Voltages, temperatures and fan speeds.

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