HP has The 20" HP TouchSmart 300 starts at $900 and will begin deliveries on November 1, with the 600 due October 22 and priced starting at $1,050. HP also announced the TouchSmart tx2 notebook, which updates the original convertible tx2, and has a 12.1-inch capacitive touch screen that also accepts stylus input. The updated model uses AMD’s Turion X2 processor and will start selling at $800 later this month.