The main topic of this release is widening the range of code which PyPy
can greatly speed up. On average on
our benchmark suite, PyPy 1.7 is around **30%** faster than PyPy 1.6 and up
x** faster on some benchmarks.
+to **20** faster on some benchmarks.
.. _`pypy 1.7 and cpython 2.7.1`: http://speed.pypy.org
* JSON encoder (but not decoder) has been replaced with a new one. This one
is written in pure Python, but is known to outperform CPython's C extension
- up to **2x** in some cases. It's about **20x** faster than the one that
+ up to **2 times** in some cases. It's about **20 times** faster than
+ the one that we had in 1.6.
* The memory footprint of some of our RPython modules has been drastically
improved. This should impact any applications using for example cryptography,