Thus far, Dell has acknowledged the issue and indicated that they are developing a replacement motherboard to fix the issue, which affected customers will be able to obtain at no cost as long as they have an active warranty contract. Part of the variation in customer reaction could be explained by the fact that the volume of the coil whine varies from unit to unit. The "coil whine" sound is the single most unifying complaint about the XPS 15 and has been cause sufficient for at least a handful of users to return their devices and buy a different product altogether, though others have been perfectly fine with it.
Several users have noted that the sound changes in pitch and/or volume based on CPU/GPU load, but does not necessarily mean that those components are generating the noise themselves. It is most commonly labeled " coil whine," though it is unclear what exactly is responsible for the sound. Many users have noticed an unexpected sound emanating from their laptops, often loudest on the left side of the keyboard or by the USB ports along the left side of the laptop. Here is also twitter thread about this issue. Short of replacing components on the board until the whine goes away (which isn't exactly a practical solution), the only way you're going to solve the problem is exchange the laptop for a different one.UPDATE: According to this page of a Dell Communities thread on this issue, Dell has officially acknowledged the issue and (as of this writing) is working on a fix. My hearing is excellent and I've had three MBAs and I haven't heard any cap whine from any of them. The resonance is probably dependent on the temperature of whatever cap/coil is vibrating, so when your CPU is idle, the electronics might cool down to the temperature that causes this resonance. If the noise is coming from the motherboard, then it's capacitor whine/coil noise: The slowest it will run is still in the MHz range, which is far beyond inaudible. Oh well, I guess they are designed to turn off if the temperature gets too high, so you probably didn't do any damage.Īnyway, nothing about the CPU's frequency has anything to do with any noise directly. I question how wise it was to run the computer with the fan unplugged, since the heatsink is tiny, and the CPU probably got very hot very quickly.
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