Why do Intel "T" CPUs exist?

[Man]

To be precise, I'm looking at the 1.7GHz i5-8400T (35W) right now and wondering why it exists? Why, when when we have Intel XTU, ThrottleStop and of course, the BIOS itself?

 

Why not just buy an i5-8400 and undervolt + underclock it?

[minibois]

Because people don't want the hassle of undervolting (people buyin T-series* CPU's likely don't know how to, to be frank) + those CPU's are guaranteed to work at those settings too, otherwise you run the risk of an unstable CPU.

You could make the same argument "why do X AMD CPU's exist".

 

*not a reference to a certain YouTube channel

[vanished]

I'd imagine it's a combination of reasons, possibly including any one or more of the following, plus others I hadn't considered:

• This is easier for devices that are not configurable, or intended for people who won't or can't configure it
• They may be chips that cannot hit the desktop speeds so this is a way to make use of that silicon
• They may be more efficient than the normal ones, even if you were to undervolt a normal one

[Mathieu9836]

Also pre-built stuff can make a cheap PC with that kind of CPU, Government and buisiness use that kind of product when they want a X number of cores and PC builders want to cut their prices.