diff --git a/OvmfPkg/AmdSev/AmdSevX64.dsc b/OvmfPkg/AmdSev/AmdSevX64.dsc
index bead9722ea..fc1fdb2e22 100644
--- a/OvmfPkg/AmdSev/AmdSevX64.dsc
+++ b/OvmfPkg/AmdSev/AmdSevX64.dsc
@@ -578,7 +578,7 @@
 
 !include OvmfPkg/OvmfTpmPcds.dsc.inc
 
-  gEfiMdePkgTokenSpaceGuid.PcdFSBClock|100000000
+  gEfiMdePkgTokenSpaceGuid.PcdFSBClock|1000000000
 
 [PcdsDynamicHii]
 !include OvmfPkg/OvmfTpmPcdsHii.dsc.inc
diff --git a/OvmfPkg/IntelTdx/IntelTdxX64.dsc b/OvmfPkg/IntelTdx/IntelTdxX64.dsc
index 00bc1255bc..dd8d446f4a 100644
--- a/OvmfPkg/IntelTdx/IntelTdxX64.dsc
+++ b/OvmfPkg/IntelTdx/IntelTdxX64.dsc
@@ -511,7 +511,7 @@
   # Set ConfidentialComputing defaults
   gEfiMdePkgTokenSpaceGuid.PcdConfidentialComputingGuestAttr|0
 
-  gEfiMdePkgTokenSpaceGuid.PcdFSBClock|100000000
+  gEfiMdePkgTokenSpaceGuid.PcdFSBClock|1000000000
 
 ################################################################################
 #
diff --git a/OvmfPkg/OvmfPkgIa32.dsc b/OvmfPkg/OvmfPkgIa32.dsc
index c16a840fff..a9841cbfc3 100644
--- a/OvmfPkg/OvmfPkgIa32.dsc
+++ b/OvmfPkg/OvmfPkgIa32.dsc
@@ -651,7 +651,7 @@
   gEfiMdePkgTokenSpaceGuid.PcdConfidentialComputingGuestAttr|0
 
 !if $(CSM_ENABLE) == FALSE
-  gEfiMdePkgTokenSpaceGuid.PcdFSBClock|100000000
+  gEfiMdePkgTokenSpaceGuid.PcdFSBClock|1000000000
 !endif
 
 [PcdsDynamicHii]
diff --git a/OvmfPkg/OvmfPkgIa32X64.dsc b/OvmfPkg/OvmfPkgIa32X64.dsc
index d3a80cb568..f7949780fa 100644
--- a/OvmfPkg/OvmfPkgIa32X64.dsc
+++ b/OvmfPkg/OvmfPkgIa32X64.dsc
@@ -659,7 +659,7 @@
   gEfiMdePkgTokenSpaceGuid.PcdConfidentialComputingGuestAttr|0
 
 !if $(CSM_ENABLE) == FALSE
-  gEfiMdePkgTokenSpaceGuid.PcdFSBClock|100000000
+  gEfiMdePkgTokenSpaceGuid.PcdFSBClock|1000000000
 !endif
 
 [PcdsDynamicDefault.X64]
diff --git a/OvmfPkg/OvmfPkgX64.dsc b/OvmfPkg/OvmfPkgX64.dsc
index 7b3d48aac4..1448f925b7 100644
--- a/OvmfPkg/OvmfPkgX64.dsc
+++ b/OvmfPkg/OvmfPkgX64.dsc
@@ -684,7 +684,7 @@
   gEfiMdePkgTokenSpaceGuid.PcdConfidentialComputingGuestAttr|0
 
 !if $(CSM_ENABLE) == FALSE
-  gEfiMdePkgTokenSpaceGuid.PcdFSBClock|100000000
+  gEfiMdePkgTokenSpaceGuid.PcdFSBClock|1000000000
 !endif
 
 [PcdsDynamicHii]