You should have pointed out that these aren't CPUs. They're clock-accurate simulators of their cores for pre-silicon software testing.

http://www.arm.com/products/DevTools/Models.html

They're just simulators for the cores that will be getting embedded into chips in the next year or two.

"The firm also reckons they can achieve speeds of up to 250MHz to enable real-time execution of software"....
Software is always executed in "real time". Whether that's fast enough for the user is subjective.

"The firm also reckons they can achieve speeds of up to 250MHz to enable real-time execution of software".

Software is always executed in "real time". Whether that's fast enough for the user is the subjective.