[ksec]

>Is it impossible to passively cool i5, i7 (integrated graphics)?

No it is not.

Why do they not sell one? Because passively cooled x86 CPU doesn't run every fast enough (yet) which leads to poor sales number.

May be a few more years. When both IPC and node improvement catch up.

[0des]

Pixelbook was an i7 passively cooled. Worked fine for compiling and virtualization etc. Can't remember it ever throttling. Also very thin. Made of plastic and I think either magnesium or aluminum but mostly plastic.