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ASRock B365 Phantom Gaming 4 (Intel B365) Motherboard Review (Page 9)

By Steven Bassiri from Mar 11, 2019 @ 10:00 CDT
TweakTown Rating: 91%Manufacturer: ASRock

Thermal Imaging and Power Consumption

System power is measured at the wall with an AC power meter.

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Note on Thermal Images: In the temperature section, we use our Seek thermal imaging camera to capture the surface temperatures of major components on the board. I look at the VRM and then all other things that light up the screen. If there is something to worry about, then I will state it. Otherwise, I will just show the hotter running parts of the board for fun. Unless some component is over 80-90C, then there isn't anything to worry about.

All systems will act differently, so I will look for commonalities, such as how far from the VRM the heat spreads through the PCB and the difference in temperature between the front side and back side of the PCB. Keep in mind, the majority of the heat from the VRM goes into the PCB as it is a giant soldered on copper heat sink. A lower temperature on the front of the PCB points towards a more effective heat sink.

Thermal Testing at Stock Speeds:

The image on the left is always at idle, and the image on the right is at load. During ALL TESTS, fans above the VRM that cool the CPU cooler's (Corsair H110i) radiator are turned on to high (12v).

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Full frontal.

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Up-close of the front of the VRM.

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Up-close of the back of the VRM.

Thermal performance is pretty good, we see the heat spread more than go up, but we can see a hot spot, but the good news is that it's under the heat sink and not part of the 33% of the CPU VCore VRM not under the heat sink. Anything under 60C is great, 60-80C is acceptable, and anything above 80C is a bit worrisome (if at stock).

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