“3 questions regarding XPS 9575. 1st. 4K screen has PWM or not? To control brightness 2nd. Coil whines. From SSD or other components. AC plugged in and without 3rd. Fan noise under load. How loud in your opinion”
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I find compared to other laptops of this size like the HP x360 15" that the fan noise is not so loud in general usage and does not come on too often (however when you first purchase if will come on a lot as it installs a lot of updates). However running processor intensive programs or games the fans do get loud as you would expect with any machine with a dedicated graphics card. As far as coil whine I have not heard in either.
Sorry, there was a problem. Please try again later.4K screen has PWM (pulse-width modulation) at low brightness levels (25% and below). I will look for something else
Sorry, there was a problem. Please try again later.I have not noticed any coil whine. I had an older Dell Precision and the whine was very loud. The fans are loud when they turn on, that is the price of high power in a small body.
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