Unlike NV30, NV31 and NV35, NV35 is still based on TSMC’s 150nm process technology, and this is the reason why it has also been the most widely spread so far. TSMC are still rapidly making changes to the 130nm process technology and until more recently supply of 130nm parts has been tight, and very low yielding in the case of much more complicated parts. NV34, being based on the relatively older, but more familiar 150nm process, has had a quicker ramp up and hence these parts are far more readily available.