Dell XPS 15 (9570): Battery Life, Acoustics And Thermals
Battery Life - How We Test:
Our custom HotHardware video loop test takes a 1080p HD video with a 16Kbps bit rate and loops it repeatedly, with
Dell XPS 15 2-In-1 Acoustics & Thermals (Updated, 9/8/18)
During day-to-day Office work and web browsing, the XPS 15 remained silent, except when viewing multiple videos simultaneously. Even then its cooling fans ramped up to a dull whisper, and the bottom of the laptop warmed only slightly.
However, during our gaming and CPU-straining benchmark tests, the fans did make their presence known. It was never a cacophony, but you will know that this system is working hard when the fans spin up. Thankfully, the performance of this system means that it will most likely finish its work quickly and quiet its fans after the tasks are done. However, over extended use case scenarios, especially with heavy graphics workloads or gaming, the XPS 15 can get noticeably loud. It's to be expected with this kind of horsepower on board but it's something to consider if you're particularly sensitive to acoustics. It's all relative, as they say.
Finally, with respect to performance and Dell's thermal solution in the new XPS 15 9570, we found the machine throttled only moderately under extended heavy load. Variances between test runs, whether it was multiple, extended compute-intensive tests like Cinebench or in extended game testing, the XPS 15 9570's performance varied less than 10 percent at any given time. We found this to be as good or better than most laptops in its weight and performance class. We've head reports that detail issues with the XPS 15 9570 thermal throttling but we did not experience this with our unit, which was fully updated with multiple BIOS updates during the process. Perhaps Dell has resolved any of these previously reported issues over time but it was our experience that the machine maintains its performance relatively well.