cpus package:MASS R Documentation _P_e_r_f_o_r_m_a_n_c_e _o_f _C_o_m_p_u_t_e_r _C_P_U_s _D_e_s_c_r_i_p_t_i_o_n: A relative performance measure and characteristics of 209 CPUs. _U_s_a_g_e: cpus _F_o_r_m_a_t: The components are: '_n_a_m_e' manufacturer and model. '_s_y_c_t' cycle time in nanoseconds. '_m_m_i_n' minimum main memory in kilobytes. '_m_m_a_x' maximum main memory in kilobytes. '_c_a_c_h' cache size in kilobytes. '_c_h_m_i_n' minimum number of channels. '_c_h_m_a_x' maximum number of channels. '_p_e_r_f' published performance on a benchmark mix relative to an IBM 370/158-3. '_e_s_t_p_e_r_f' estimated performance (by Ein-Dor & Feldmesser). _S_o_u_r_c_e: P. Ein-Dor and J. Feldmesser (1987) Attributes of the performance of central processing units: a relative performance prediction model. _Comm. ACM._ *30*, 308-317. _R_e_f_e_r_e_n_c_e_s: Venables, W. N. and Ripley, B. D. (2002) _Modern Applied Statistics with S._ Fourth edition. Springer.