diff --git a/plugins/GSdx/GSVertex.h b/plugins/GSdx/GSVertex.h
index 5d6b82135f..3e50000500 100644
--- a/plugins/GSdx/GSVertex.h
+++ b/plugins/GSdx/GSVertex.h
@@ -41,10 +41,21 @@ struct alignas(32) GSVertex
 			uint32 FOG; // FOG:28
 		};
 
+#if _M_SSE >= 0x500
+		__m256i mx;
+#endif
 		__m128i m[2];
 	};
 
+	GSVertex() = default; // Warning object is potentially used in hot path
+
+#if _M_SSE >= 0x500
+	GSVertex(const GSVertex& v) {mx = v.mx;}
+	void operator = (const GSVertex& v) {mx = v.mx;}
+#else
+	GSVertex(const GSVertex& v) {m[0] = v.m[0]; m[1] = v.m[1];}
 	void operator = (const GSVertex& v) {m[0] = v.m[0]; m[1] = v.m[1];}
+#endif
 };
 
 struct GSVertexP