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ASUS X99-Deluxe II Motherboard Review (Page 3)

By: Steven Bassiri from Sep 29, 2016 @ 11:40 CDT
TweakTown Rating: 92%Manufacturer: ASUS

Circuit Analysis


For me, the motherboard looks much more interesting without the heat sinks and shield.


These are the block diagrams for the motherboard when using both 28 and 40-lane CPUs. The switching of CPU and PCH lanes is quite intense, but it allows for many different configurations.


The CPU VRM on the X99-Deluxe II is a true 8-phase controlled by a rebadged 8-phase PWM controller. I assume it's the IR/Infineon IR3580 fully digital high-performance PWM. Each of the phases uses an Infineon/IR IR3556 PowIRstage capable of 50A output, a high current inductor with heat-fins, and 10K rated black capacitors.


Each memory VRM's main DDR4 voltage rail is controlled by a rebadged ASP1250 PWM and uses two Texas Instruments CSD97374Q4M NexFETs for each set of four DIMMs. A GSTek POL is used for VPP memory VRM power.


One of the main selling points of the X99-Deluxe II is the additional ThunderBolt 3 card. This card uses Intel's Alpine Ridge DSL6540 controller, a Texas Instruments TPS65982 type-C power delivery, and controller, as well as a few voltage regulators to produce the proper power delivery required.


The fan extension card uses a nuvoTon W83L603G and an NCT7802 to produce the fan control mechanisms.


The X99-Deluxe II also has a plethora of ASMedia ASM1480 quick switches used to switch around CPU and PCH bandwidth to provide all of the features.

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