Are 4x DVD-R media compatible with all drives?

I read somewhere that 4x DVD-r media are not compatible with certain drives which write at a speed below 4x (some old drives). Is this true? Are today’s drives compatible with all media? Thanks.

Not sure whether it’s “all” drives, but Taiyo Yuden 4x DVD-R media is likely to work at at least 4x with most DVD burners in the world market.