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Dell won't enable Speed Shift on the XPS 15 9550 and 9560

An improvement of the Speed Step technology, Speed Shift enables much faster power state transitions to increase performance and save battery life. (Source: Intel)
An improvement of the Speed Step technology, Speed Shift enables much faster power state transitions to increase performance and save battery life. (Source: Intel)
After more than a year of badgering by customers waiting for the performance-enhancing technology to be enabled, a Dell representative has stated that though both the 9550 and 9560 support Speed Shift, their engineers are not in the mood to enable it.

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For over a year, Dell XPS 15 users have been waiting for Dell to enable a performance-enhancing and battery-life-increasing feature called Speed Shift via a BIOS update. It looks like the wait is over, because Dell has officially decided that they... simply aren't going to enable the feature, ever.

Intel's Speed Shift technology, first implemented with their 6th generation Skylake CPUs and improved upon for Kaby Lake, is a method for changing CPU frequency that is both faster and more efficient than the Speed Step technology it superseded. While Speed Step required calls to be made to the OS, which added an additional layer of inefficiency to the changing of CPU frequency, Speed Shift is performed at the processor level.

In a response to a user's question regarding enabling the feature on the notebooks, Dell representative Justin C replied "Dell engineering has advised me today that Speed Shift will not be enabled on the 9550 and 9560", without elaboration. As both generations of processors support the performance-enhancing technology by default, Speed Shift can be manually enabled by knowledgeable users through software such as ThrottleStop or R/W Everything. However, having the technology enabled through a BIOS update would be a better, simpler solution.

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> Notebook / Laptop Reviews and News > News > News Archive > Newsarchive 2017 03 > Dell won't enable Speed Shift on the XPS 15 9550 and 9560
Douglas Black, 2017-03-23 (Update: 2017-03-23)
Douglas Black
Douglas Black - News Editor
I am a university Lecturer and researcher in English writing, but I like to keep myself busy. Between weightlifting, MMA, and SCUBA diving, one of my life-long interests has always been computers. I used Macs until about 17 years ago when I switched to PCs because of an interest in games, but I'm still interested in top quality laptops that push the design envelope.