diff --git a/sys/amd64/amd64/identcpu.c b/sys/amd64/amd64/identcpu.c
index c09c8570257..03752c6681f 100644
--- a/sys/amd64/amd64/identcpu.c
+++ b/sys/amd64/amd64/identcpu.c
@@ -36,7 +36,7 @@
  * SUCH DAMAGE.
  *
  *	from: Id: machdep.c,v 1.193 1996/06/18 01:22:04 bde Exp
- *	$Id: identcpu.c,v 1.23 1997/06/02 08:19:02 dfr Exp $
+ *	$Id: identcpu.c,v 1.24 1997/06/02 18:55:44 peter Exp $
  */
 
 #include "opt_cpu.h"
@@ -184,6 +184,12 @@ printcpuinfo(void)
 		case 0x510:
 			strcat(cpu_model, "K5 model 1");
 			break;
+		case 0x520:
+			strcat(cpu_model, "K5 PR166");
+			break;
+		case 0x530:
+			strcat(cpu_model, "K5 PR200");
+			break;
 		case 0x560:
 			strcat(cpu_model, "K6");
 			break;
diff --git a/sys/i386/i386/identcpu.c b/sys/i386/i386/identcpu.c
index c09c8570257..03752c6681f 100644
--- a/sys/i386/i386/identcpu.c
+++ b/sys/i386/i386/identcpu.c
@@ -36,7 +36,7 @@
  * SUCH DAMAGE.
  *
  *	from: Id: machdep.c,v 1.193 1996/06/18 01:22:04 bde Exp
- *	$Id: identcpu.c,v 1.23 1997/06/02 08:19:02 dfr Exp $
+ *	$Id: identcpu.c,v 1.24 1997/06/02 18:55:44 peter Exp $
  */
 
 #include "opt_cpu.h"
@@ -184,6 +184,12 @@ printcpuinfo(void)
 		case 0x510:
 			strcat(cpu_model, "K5 model 1");
 			break;
+		case 0x520:
+			strcat(cpu_model, "K5 PR166");
+			break;
+		case 0x530:
+			strcat(cpu_model, "K5 PR200");
+			break;
 		case 0x560:
 			strcat(cpu_model, "K6");
 			break;