diff --git a/src/mainboard/asus/kgpe-d16/cmos.default b/src/mainboard/asus/kgpe-d16/cmos.default
index 3319497f4b..b5e9f071c4 100644
--- a/src/mainboard/asus/kgpe-d16/cmos.default
+++ b/src/mainboard/asus/kgpe-d16/cmos.default
@@ -3,7 +3,7 @@ debug_level = Spew
 multi_core = Enable
 slow_cpu = off
 compute_unit_siblings = Enable
-gart = Disable
+iommu = Enable
 nmi = Disable
 hypertransport_speed_limit = Auto
 max_mem_clock = DDR3-1600
@@ -23,6 +23,7 @@ maximum_p_state_limit = 0xf
 probe_filter = Auto
 l3_cache_partitioning = Disable
 ieee1394_controller = Enable
+gart = Disable
 experimental_memory_speed_boost = Disable
 power_on_after_fail = On
 boot_option = Fallback
diff --git a/src/mainboard/asus/kgpe-d16/cmos.layout b/src/mainboard/asus/kgpe-d16/cmos.layout
index a34547ae48..d1c070215b 100644
--- a/src/mainboard/asus/kgpe-d16/cmos.layout
+++ b/src/mainboard/asus/kgpe-d16/cmos.layout
@@ -46,9 +46,10 @@ entries
 473          2       e       13       dimm_spd_checksum
 475          1       e       14       probe_filter
 476          1       e       1        l3_cache_partitioning
-477          1       e       1        experimental_memory_speed_boost
-478          1       r       0        allow_spd_nvram_cache_restore
-479          1       e       1        ieee1394_controller
+477          1       e       1        ieee1394_controller
+478          1       e       1        iommu
+479          1       e       1        experimental_memory_speed_boost
+480          1       r       0        allow_spd_nvram_cache_restore
 728        256       h       0        user_data
 984         16       h       0        check_sum
 # Reserve the extended AMD configuration registers