diff --git a/src/mainboard/samsung/stumpy/thermal.h b/src/mainboard/samsung/stumpy/thermal.h
index fa8a08ed75..bfefc36d36 100644
--- a/src/mainboard/samsung/stumpy/thermal.h
+++ b/src/mainboard/samsung/stumpy/thermal.h
@@ -3,33 +3,33 @@
 #ifndef STUMPY_THERMAL_H
 #define STUMPY_THERMAL_H
 
-/* Fan is OFF */
+/* Fan is OFF at idle (passive cooling) */
 #define FAN4_THRESHOLD_OFF	0
 #define FAN4_THRESHOLD_ON	0
 #define FAN4_PWM		0x00
 
 /* Fan is at LOW speed */
-#define FAN3_THRESHOLD_OFF	48
+#define FAN3_THRESHOLD_OFF	45
 #define FAN3_THRESHOLD_ON	55
-#define FAN3_PWM		0x40
+#define FAN3_PWM		0xA0
 
 /* Fan is at MEDIUM speed */
-#define FAN2_THRESHOLD_OFF	52
-#define FAN2_THRESHOLD_ON	64
-#define FAN2_PWM		0x80
+#define FAN2_THRESHOLD_OFF	55
+#define FAN2_THRESHOLD_ON	65
+#define FAN2_PWM		0xB0
 
 /* Fan is at HIGH speed */
-#define FAN1_THRESHOLD_OFF	60
-#define FAN1_THRESHOLD_ON	68
-#define FAN1_PWM		0xb0
+#define FAN1_THRESHOLD_OFF	65
+#define FAN1_THRESHOLD_ON	72
+#define FAN1_PWM		0xC0
 
 /* Fan is at FULL speed */
-#define FAN0_THRESHOLD_OFF	66
-#define FAN0_THRESHOLD_ON	78
+#define FAN0_THRESHOLD_OFF	72
+#define FAN0_THRESHOLD_ON	80
 #define FAN0_PWM		0xff
 
 /* Temperature which OS will shutdown at */
-#define CRITICAL_TEMPERATURE	100
+#define CRITICAL_TEMPERATURE	98
 
 /* Temperature which OS will throttle CPU */
 #define PASSIVE_TEMPERATURE	90