It's rated 10kRPM to 30kRPM so as a ballpark is possible to guestimate that top speed will be close to 30k and low speed will be close to 10k ;-)
Optical rev counters are available so measuring is possible.
I'd give it a go with a single flute end mill in aluminium, if you used HSM Advisor free trial you can set up your machine profile and go with settings that result in no tool deflection and increase feeds from there.
Other Calculators are available! ;-)

- Nick