diff --git a/src/nvidia/src/kernel/gpu/gsp/kernel_gsp.c b/src/nvidia/src/kernel/gpu/gsp/kernel_gsp.c
index 4da1151c7..fdf9f9eeb 100644
--- a/src/nvidia/src/kernel/gpu/gsp/kernel_gsp.c
+++ b/src/nvidia/src/kernel/gpu/gsp/kernel_gsp.c
@@ -6613,9 +6613,9 @@ _kgspInitGpuProperties(OBJGPU *pGpu)
     GspStaticConfigInfo *pGSCI = GPU_GET_GSP_STATIC_INFO(pGpu);
 
     pGpu->setProperty(pGpu, PDB_PROP_GPU_IS_MOBILE, pGSCI->bIsMobile);
-    pGpu->setProperty(pGpu, PDB_PROP_GPU_RTD3_GC6_SUPPORTED, pGSCI->bIsGc6Rtd3Allowed);
-    pGpu->setProperty(pGpu, PDB_PROP_GPU_RTD3_GC8_SUPPORTED, pGSCI->bIsGc8Rtd3Allowed);
-    pGpu->setProperty(pGpu, PDB_PROP_GPU_RTD3_GCOFF_SUPPORTED, pGSCI->bIsGcOffRtd3Allowed);
+    pGpu->setProperty(pGpu, PDB_PROP_GPU_RTD3_GC6_SUPPORTED, pGSCI->bIsGc6Rtd3Allowed && !pGpu->getProperty(pGpu, PDB_PROP_GPU_IS_EXTERNAL_GPU));
+    pGpu->setProperty(pGpu, PDB_PROP_GPU_RTD3_GC8_SUPPORTED, pGSCI->bIsGc8Rtd3Allowed && !pGpu->getProperty(pGpu, PDB_PROP_GPU_IS_EXTERNAL_GPU));
+    pGpu->setProperty(pGpu, PDB_PROP_GPU_RTD3_GCOFF_SUPPORTED, pGSCI->bIsGcOffRtd3Allowed && !pGpu->getProperty(pGpu, PDB_PROP_GPU_IS_EXTERNAL_GPU));
     pGpu->setProperty(pGpu, PDB_PROP_GPU_IS_UEFI, pGSCI->bIsGpuUefi);
     pGpu->setProperty(pGpu, PDB_PROP_GPU_IS_EFI_INIT, pGSCI->bIsEfiInit);
     pGpu->setProperty(pGpu, PDB_PROP_GPU_LEGACY_GCOFF_SUPPORTED, pGSCI->bIsGcoffLegacyAllowed);