diff --git a/src/vendorcode/amd/agesa/f15tn/Proc/GNB/Modules/GnbInitTN/GfxLibTN.c b/src/vendorcode/amd/agesa/f15tn/Proc/GNB/Modules/GnbInitTN/GfxLibTN.c
index ce50a975c7..6177d08ef1 100644
--- a/src/vendorcode/amd/agesa/f15tn/Proc/GNB/Modules/GnbInitTN/GfxLibTN.c
+++ b/src/vendorcode/amd/agesa/f15tn/Proc/GNB/Modules/GnbInitTN/GfxLibTN.c
@@ -73,7 +73,7 @@
 CONST UINT16 GfxMemClockFrequencyDefinitionTable [][8] = {
 {0 ,  0 ,  0 ,  0 ,  333,  0,  400,  0 },
 {0 ,  0 ,  533,  0 ,  0 ,  0 ,  667,  0 },
-{0 ,  0 ,   800,  0 ,  0 ,  0 ,  0 ,  0 },
+{0 ,  0 ,   800,  0 ,  0 ,  0 , 933,  0 },
 {0 , 1050, 1066, 0 , 0,    0 , 0,    1200}
 };