To be sure ColdFusion will work at peak performance on your hardware platform, make sure you follow the steps listed here:
Check the system requirements in the installation documentation.
Check your hardware’s specs. If your RAM or disk space is inadequate, or your processor can’t handle the load, an upgrade will be necessary.
The complete list of supported platforms and the system requirements for each can be found at http://www.adobe.com/products/coldfusion/productinfo/systemreqs/.