Added speed point in check_blas.py.

theano/misc/check_blas.py

@@ -140,6 +140,7 @@ if __name__ == "__main__":
         GTX470/3.0        0.34s
         GTX285/3.0        0.40s
         C1060/3.2         0.46s
+        GTX550Ti/4.0      0.57s
         GT220/3.2RC       3.80s
         8500GT/3.0       10.68s
         """