The voltage requirement for this processor is up to 1.5 Volt, so 1.4 volts is still OK for this processor.
Regarding the temperature, the maximum recommended temperature for this processor is 72.6 degrees Celsius.
75 degrees Celsius is a little high, so I would suggest installing the latest BIOS version for your motherboard, and also try reseating the processor as well as the fan/heatsink.
If possible, test this processor on a 2nd motherboard to see if it has the same thermal behavior.
I saw it rise just under 1.5v, glad to know that's normal.That sounds like a lot of voltage for such a delicate thing, but I guess Intel knows it's stuff.
I was just supprised to see my friend's 2600k needing so much less.
We checked the cooler and reseated it with new thermal paste, it's a little better at 70-72 c. I'll try to add fans to see if it helps.
Thank you for your help.