Enter Define R4. You will be forgiven for thinking that R4 has many similar characteristics to R3, infact taking the case from an external viewpoint reveals no changes - its inside where the subtle improvements have been made. The case is wider to allow for bigger CPU coolers, longer graphics cards and better cable management. A fan controller has also been integrated to manage the speed of cooling fans within the chassis - all of these features we will be taking a look at as we explore this new offering from Fractal Design."
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips