possibly replacing ``--opt=jit`` with another `optimization level`_
of your choice like ``--opt=2`` if you do not want the included JIT
- compiler. As of March 2011, Intel **32-bit** environment needs ``4GB``.
+ compiler. As of March 2011, Intel 32-bit environment needs **at
+ least** 2GB, and 64-bit needs 4GB.
.. _`optimization level`: config/opt.html