i pay for 12 mbps from uverse and get 7-8 consistently on wifi with my mini but my macbook pro will get 7-8 for 10-30 secs and then it dips to .5 mbps
should i return the macbook pro for another or could it be some setting im missing
It sounds like your router is throttling your connection. It could also be the server. If your computer can connect to the network, it's rarely an issue on the computer.
There's really too little information to be able to accurately say, as there are a whole slew of potential causes. What router/access point are you using? Is your Mac Mini closer to the router than your MBP is when you test the wireless speeds? Does your MBP get expected speeds when connected to a different wireless network other than your home network (a wireless network at school for instance)?