diff --git a/src/mainboard/google/fizz/variants/fizz/overridetree.cb b/src/mainboard/google/fizz/variants/fizz/overridetree.cb
index 3394bdf9a4..b4eea385e0 100644
--- a/src/mainboard/google/fizz/variants/fizz/overridetree.cb
+++ b/src/mainboard/google/fizz/variants/fizz/overridetree.cb
@@ -3,6 +3,10 @@ chip soc/intel/skylake
 	# Use default SD card detect GPIO configuration
 	register "sdcard_cd_gpio" = "GPP_A7"
 
+	# No need for dynamic config (and the additional RAM training time)
+	# on a Chromebox; always use high power/high performance mode
+	register "SaGv" = "SaGv_FixedHigh"
+
 	device domain 0 on
 		device pci 14.0 on
 			chip drivers/usb/acpi