diff --git a/tools/power/cpupower/utils/idle_monitor/snb_idle.c b/tools/power/cpupower/utils/idle_monitor/snb_idle.c
index a99b43b97d6d331d85d2e3610ff9bcdbe04524ff..efc8a69c9abafea4c492b52457d5f645254c3180 100644
--- a/tools/power/cpupower/utils/idle_monitor/snb_idle.c
+++ b/tools/power/cpupower/utils/idle_monitor/snb_idle.c
@@ -155,6 +155,10 @@ static struct cpuidle_monitor *snb_register(void)
 	case 0x2D: /* SNB Xeon */
 	case 0x3A: /* IVB */
 	case 0x3E: /* IVB Xeon */
+	case 0x3C: /* HSW */
+	case 0x3F: /* HSW */
+	case 0x45: /* HSW */
+	case 0x46: /* HSW */
 		break;
 	default:
 		return NULL;