What's the difference between GeForce Max-Q and Max-P laptops?

Shopping for a gaming laptop can be a pain in the ass. One make and model of laptop can have many configurations, and even official manufacturer websites sometimes provide confusing or incomplete specifications. One increasingly common distinction is what kind of mobile Nvidia graphics subsystem you’re getting: regular or Max-Q. Retail listings don’t always specify, but it’s something you need to know before pulling the trigger on a new laptop, because it affects how the system is going to perform.

Here’s what it means when a laptop’s Nvidia graphics chip is designated as Max-Q, what it means when you see Max-P instead, and what to expect if there’s no specification.

What is Max-Q?

source: gamezpot.com