Difference between Buddhist and materialist views of no self?
Apart from what you have mentioned,  materialists usually think that the mind is a byproduct of the brain. In other words, electrical traces stored in neurons. This is not the case in Buddhism. Brain is a concept according to Buddhism. The reality is fundamentally grouped into 2 categories: the mental(Nama) and the physical(Rupa).  

The four noble truths hold true at all times regardless of what one believes. But one is not able to attain enlightenment, if one holds to the view that all mental activities end at death. This belief is called Saggawarana &amp; Maggawarana:  conceals the path to heavens and conceals the path to enlightenment.

Here's a related answer by ven.Yuttadhammo.