Um.... well... ahhhh....... hrrmmm...
Ipads, pads in general are not replacements..
They're for in-a-pinch moments and if you're too lazy to get out of bed to read an email..
Even the fastest pads, (excluding intel i5 pads), are significantly slower than even an i3 laptop cpu..
It feels slower, it does everything slower than most laptops.. even old ones..
Now, whether or not it's fast enough "for you"... that comes down to what you're using it for..