diff --git a/headers/os/kernel/OS.h b/headers/os/kernel/OS.h
index e1fa740ac7..7358ffbeeb 100644
--- a/headers/os/kernel/OS.h
+++ b/headers/os/kernel/OS.h
@@ -369,8 +369,11 @@ typedef enum cpu_types {
 	B_CPU_INTEL_PENTIUM_III				= 0x1067,
 	B_CPU_INTEL_PENTIUM_III_MODEL_8		= 0x1068,
 #ifdef OBOS_CPU_TYPES
+	B_CPU_INTEL_PENTIUM_III_MODEL_11 	= 0x106b,
 	B_CPU_INTEL_PENTIUM_IV				= 0x10f0,
+	B_CPU_INTEL_PENTIUM_IV_MODEL1,
 	B_CPU_INTEL_PENTIUM_IV_MODEL2,
+	B_CPU_INTEL_PENTIUM_IV_XEON 		= 0x0F27,
 #endif
 
 	/* AMD */
@@ -399,6 +402,7 @@ typedef enum cpu_types {
 	B_CPU_AMD_ATHLON_XP 				= 0x1166,
 	B_CPU_AMD_ATHLON_XP_MODEL2,
 	B_CPU_AMD_ATHLON_XP_MODEL3,
+	B_CPU_AMD_ATHLON_XP_MODEL_BARTON 	= 0x116A,
 #endif
 	
 	/* VIA */