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ASRock Z270 Killer SLI Motherboard Review (Page 3)

By Steven Bassiri from Apr 11, 2017 @ 21:55 CDT
TweakTown Rating: 89%Manufacturer: ASRock

Circuit Analysis

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The Z270 Killer SLI reveals its hardware!

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The VRM on this motherboard is a 6+2 phase VRM. The PWM used is an ISL95824 Green hybrid digital multiphase PWM with some integrated drivers. To get 6 phases from the 4 on the main PWM's rail, ASRock doubles the number of MOSFETs and inductors hooked up to each of the three drivers. On the main VCore rail, the PWM offers two integrated drivers, so ASRock added an extra ISL6625A. The iGPU two-PWM channel offers one integrated driver, so ASRock adds another ISL6625A. ASRock uses a mixture of Nikos Semiconductor PK618BA and PZ0903BK N-channel PowerPAK MOSFETs. ASRock states their inductors are rated 40A, and their capacitors are premium 12K FP caps from Japan. The two phases on the far left are for the VCCSA and VCCIO.

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The memory VRM uses an Anpec APW8720 single phase PWM with integrated driver and uses the same NIKOS MOSFETs as were used on the CPU VRM. MOSFETs and inductors are doubled, so you get two memory phases.

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