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Old January 12, 2018, 05:12 AM
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Default What is ITE IT8721F, and why does it read as overheating?

Right, during the summer, rendering a 15-20 minute file of 1080p footage would be enough to shut my PC down, let alone 4k footage. Now during the winter it'll hold up, but something still reaches near boiling temperatures.
Turns out, some chip on my MB, called ITE IT8721F is reaching temperatures of up to 80-90 C. On the other hand, there's another temperature reading, reading at 34 C... What is this chip and what does it do? I can't find it on the internet.


AMD FX-8350
GeForce GTX 660 (Yes, it actually roamed with dinosaurs)
620W Cooler Master Power Supply
and some Cooler Master Fan on the CPU but I can't tell which one.

Yes, the GPU will be replaced within the next 2 weeks or so since I've recently bought a 4k monitor and I can't play ANYTHING anymore, not even in 1080p, without my GPU hitting 100 celcius...

I've added a screenshot from Open Hardware Monitor during a torture test to show you the weird temperatures. The big temp spike is right at the top.

I hope you guys can figure this one out because I'm at a loss

My thanks,
a hardware noob.

Last edited by Sovereign1986; January 12, 2018 at 06:06 AM.
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Old January 12, 2018, 07:47 AM
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Join Date: Nov 2007
Location: British Columbia
Posts: 501

My System Specs


seems it's a legacy chip that controls the serial port. so it's probably not being used and he problem is from a temp sensor connected to the chip being placed too close to the VRM, hence giving a false positive. it's not important at all, so you can go into the BIOS and disable the serial port and this issue should go away.

at least, that's what's shared in this thread:
how is ITE IT8721F too hot, IN MY RIG?
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