Prize fighter. If you would like to reduce your carbon fingerprint then you should preferably snatch a ThinkPad L530 – at least according to Lenovo. The notebook's actual CO2 emission is an open question. However, we closely examined the budget ThinkPad's Office qualities.
http://www.notebookcheck.net/Quick-Review-Lenovo-Thinkpad-L530-2479-3BG-Notebook.78311.0.html