A:AnswerYou won't get an answer that's not "generic" since battery life is measured based on mixed usage. You can expect a few hours less with 4K video playback, and even less if you have the backlight on the keyboard and/or full brightness on the display settings.
A:AnswerThe 15-df0023dx is a Spectre x360 15, yes, but there are also other Spectre x360 15 computers with different specs (same chassis, different components). The differences will be in the processor, RAM, graphics card and storage.
A:AnswerThe RAM is not expandable. If you upgrade the solid state drive, it needs be a M.2 solid state drive. Here are the full specs on the laptop from HP: https://support.hp.com/us-en/document/c06213881
A:AnswerThey both have the NVIDIA® GeForce® MX150 (2 GB GDDR5 dedicated) discrete GPU. One is Poseidon Blue and one is Dark Ash Silver with Copper highlights.
