We demonstrate comparing two types of X-ray generation source based respectively on 10 Hz repetition rate laser pulses with using massive solid target and 1 KHz repetition rate from a thin-foil target in a rather small configuration. The variation of generation parameters such as the incidence angle of laser pulse, size of target and target materials was described and evaluated by theoretical estimations. The dependence of number K _α photons generated by Cu and Ni targets has shown as function of the intensity laser radiation. The size of x-ray source was detected in both cases.