diff --git a/src/northbridge/intel/gm45/ram_calc.c b/src/northbridge/intel/gm45/ram_calc.c
index a029020748..c8c15d3a76 100644
--- a/src/northbridge/intel/gm45/ram_calc.c
+++ b/src/northbridge/intel/gm45/ram_calc.c
@@ -43,6 +43,8 @@ u32 decode_igd_memory_size(const u32 gms)
 		return  16 << 10;
 	case 5:
 		return  32 << 10;
+	case 6:
+		return  48 << 10;
 	case 7:
 		return  64 << 10;
 	case 8: