"A machine with two of the top-end 3.33 GHz Xeon X5680 six-core processors is rated at 381 on the SPECint_rate2006 integer benchmark and 257 on the SPECfp_rate2006 floating point test; with 48 GB of memory, that machine costs around $3,350.
A reference AMD platform with four sockets using the eight-core 6136 processors running at 2.4 GHz is rated at an estimated 574 on the integer test and an estimated 514 on the floating point test. With 128 GB of memory, that four-socket reference server is expected to cost just under $3,000. "
I think that is totally ok performance. Dont you agree?