Joe DeFuria
Legend
1. Cheaper to manufacture in the long-run...
Right. But all indications are that the 0.15 R-300 is a "temporary" solution until it can be re-spun (probably next spring) at 0.13. In other words, I don't believe 0.15 R-300 is a "long-term product" for ATI.
Much like nVidia's original GeForce. nVidia produced the original GeForce on a larger process to get it out the door, even though that resulted in a power hungry, "hot" product at a "relatively" low clock speed. But the "long term" GeForce product was the re-spun variants on more advanced process...the GeForce2 GTS. The original GeForce product was disontinued very quickly and replaced by the GTS and it's variant, the "pro."
The advantage to using a mature process vs. a "bleeding edge" process is obvious: getting the product out sooner rather than later.
EDIT: I still find it absolutley amazing if ATI manages to put an 8 pipe, DX9 compliant part with 107 million transistors on a 0.15 micron process, AND manages to clock it a 300 Mhz plus. That is truly astounding IMO.