Athlon FX 跟 Opteron 不用PR 值

eg
Athlon FX-51 = 2.0Ghz
Athlon FX-53 = 2.2Ghz
Athlon FX-55 = 2.4Ghz

Opteron 140 = 1.4Ghz
Opteron 142 = 1.6Ghz
Opteron 144 = 1.8Ghz
Opteron 146 = 2.0Ghz