just to have that added: MIR can for sure not be run on *whatever machine* ... we have tested it on an i7 965 XE (3.2 GHz) with 12 GB memory ... i would assume an i7 920 (2.66 GHz) or 940 (2.93 GHz) would do the job also pretty well since speed of memory bus is the most important factor.
btw: the systems have hyperthreading enabled (4 real and 4 virtual processors) since this setting allows better load balancing for the calculation units, also the 8MB L3 cache seems to help a lot ...
interestingly an 8 core XEON 3.2 GHz i5400 board did not deliver a performance even close to the i7 ...
christian
and remember: only a CRAY can run an endless loop in just three seconds.