diff --git a/src/cpu/cpu_map.xml b/src/cpu/cpu_map.xml
index 2cfb075ef2..ba1418d4aa 100644
--- a/src/cpu/cpu_map.xml
+++ b/src/cpu/cpu_map.xml
@@ -1200,31 +1200,87 @@
     </model>
 
     <model name='Opteron_G3'>
-      <model name='Opteron_G2'/>
+      <vendor name='AMD'/>
       <feature name='abm'/>
+      <feature name='apic'/>
+      <feature name='clflush'/>
+      <feature name='cmov'/>
+      <feature name='cx16'/>
+      <feature name='cx8'/>
+      <feature name='de'/>
+      <feature name='fpu'/>
+      <feature name='fxsr'/>
+      <feature name='lahf_lm'/>
+      <feature name='lm'/>
+      <feature name='mca'/>
+      <feature name='mce'/>
       <feature name='misalignsse'/>
+      <feature name='mmx'/>
       <feature name='monitor'/>
+      <feature name='msr'/>
+      <feature name='mtrr'/>
+      <feature name='nx'/>
+      <feature name='pae'/>
+      <feature name='pat'/>
+      <feature name='pge'/>
+      <feature name='pni'/>
       <feature name='popcnt'/>
+      <feature name='pse'/>
+      <feature name='pse36'/>
+      <feature name='rdtscp'/>
+      <feature name='sep'/>
+      <feature name='sse'/>
+      <feature name='sse2'/>
       <feature name='sse4a'/>
+      <feature name='svm'/>
+      <feature name='syscall'/>
+      <feature name='tsc'/>
     </model>
 
     <model name='Opteron_G4'>
-      <model name='Opteron_G2'/>
-      <!-- Can't inherit from G3 because of missing "monitor"
-           feature -->
+      <vendor name='AMD'/>
       <feature name='3dnowprefetch'/>
       <feature name='abm'/>
       <feature name='aes'/>
+      <feature name='apic'/>
       <feature name='avx'/>
+      <feature name='clflush'/>
+      <feature name='cmov'/>
+      <feature name='cx16'/>
+      <feature name='cx8'/>
+      <feature name='de'/>
       <feature name='fma4'/>
+      <feature name='fpu'/>
+      <feature name='fxsr'/>
+      <feature name='lahf_lm'/>
+      <feature name='lm'/>
+      <feature name='mca'/>
+      <feature name='mce'/>
       <feature name='misalignsse'/>
+      <feature name='mmx'/>
+      <feature name='msr'/>
+      <feature name='mtrr'/>
+      <feature name='nx'/>
+      <feature name='pae'/>
+      <feature name='pat'/>
       <feature name='pclmuldq'/>
       <feature name='pdpe1gb'/>
+      <feature name='pge'/>
+      <feature name='pni'/>
       <feature name='popcnt'/>
+      <feature name='pse'/>
+      <feature name='pse36'/>
+      <feature name='rdtscp'/>
+      <feature name='sep'/>
+      <feature name='sse'/>
+      <feature name='sse2'/>
       <feature name='sse4.1'/>
       <feature name='sse4.2'/>
       <feature name='sse4a'/>
       <feature name='ssse3'/>
+      <feature name='svm'/>
+      <feature name='syscall'/>
+      <feature name='tsc'/>
       <feature name='xop'/>
       <feature name='xsave'/>
     </model>