Here's a good review of the Clover trail processor itself.
It'll give you a ballpark idea of what to expect from the Atom WinTabs...
As you’ll see in the benchmarks to come, this five year old Atom architecture is still faster than every single ARM based core on the market today with the exception of the Cortex A15.
Essentially it is about the same as an AMD Athlon II X2 240e and somewhat fater than an old Pentium R2140. You won't be doing scientific computing but general office apps should be just fine. The Samsung runs 8-10 hours battery life. Not at all bad.