no, it is two cores, a bit faster but is a low power, low performance i7, that will feel like a i5
for daily use, get a i3, if that is your logic, i3 is meant for daily use
if you ask for a i7, it is because you want to do some serious work, and if you need to do some serious work, you will need a strong i7, so a 4 cores has a sense there, the 8 threads help alot
the u series exist just because people like to have 8 or more hours of battery life from a cpu that has very little to no heat to dissipate thanks to the fact of the speed the cpu all the time runs, 800 mhz more or less unless you put load on it and then it can ramp up to the high value you mention, for like 5 minutes, then it overheats a, makes lots of noise with the fan and speeds down for the temperature and power consumption limitations imposed
it is a fun product to use, just to see struggle to live between those limits
as you see, i don't like the product, and knowing it will be expensive and slow as the previous i7 6500 from recent years, i can't tell you to buy it whenever you find one