New iMacs are pretty fast! Macworld have done a benchmark on the new iMac 2011 it is faster than all previous iMacs and are almost as fast as Mac Pro 2010. It is just a wonder that you can have such a powerful machine and a 27 inch screen pack together in such a neat package!
Currently there are still no benchmark for SSD Drive yet, I will be very interested to know how much better it will score, as we all know Macbook Air is so much faster just because of SSD. Stay Tuned!