How to reduce image comparison time

Question

We implemented a hand detection and recognition system using webcam.But when we get the output text it takes at least 8 minutes to give the output after matching with database.As the initial step our database contain only 4 images bt it takes long time.
We use win 32 ,processor i3 CPU @2.4GHz.
 
if we use higher processor can we solve our problem?
Please suggest any other way to reduce the comparison time?

Is it possible to use thread to reduce the comparison time ?

 
Thanks in advance........