I just researched this topic and found the best bang for the buck is the lenovo p50 or p70. They can be configured to have a xeon processor which could even process CGI graphics for under 2000 with HD screen. For 500 more, MSI has a xeon laptop as well but reviews show that it has a tendency to run hot. Lastly check out the HP Zbook Studio G3. Boxxtech actually has an external dual xeon external renderPRO device that should also be looked at handle your rendering and export needs.