diff --git a/docs/starting/which-python.rst b/docs/starting/which-python.rst
index 9a22bc4..f5be900 100644
--- a/docs/starting/which-python.rst
+++ b/docs/starting/which-python.rst
@@ -66,7 +66,8 @@ PyPy aims for maximum compatibility with the reference CPython implementation
 while improving performance.
 
 If you are looking to squeeze more performance out of your Python code, it's
-worth giving PyPy a try.
+worth giving PyPy a try. On a suite of benchmarks, it's current `over 5 times
+faster than CPython <http://speed.pypy.org/>`_.
 
 Currently PyPy supports Python 2.7.