Sony Ericsson W810

I am thinking buying a 1gb memory stick for Cingular 810i and i see Sony got two cards, regular memory stick due(15mb/sec) and memory stick due High speed(80mb/sec). Will the High Speed version work 810i? Sony web sites says that 80mb transfer will work only with high speed enabled devices. I am not sure 810 is high speed enabled or not. Is it worth paying extra for the high speed memory stick?

thanks - KP