Originally posted by Pedro Estarque
OK, so I'm getting tired of altivec. I've used it and it sure does speed up some things ( in my experience Photoshop and OSX GUI are much faster), but at what price?
First of all, I think it goes against the whole RISC chip design's philosophy. It adds complexity to the chip, increasing heat, making it harder to produce and therefore more expensive. If that developing effort was spent in better FPU, Integer, FSB, handling more instructions at a time, etc we could have a much better and cheaper PPC on our macs today.
Besides, you have to teach your developers to code their softwares in a specific way in order to get the speed boost, another example of mislead effort. A developer should focus on the features and productivity of their software, optimization is the compliler's job.
We all know how cool and energy efficient this G3s are. Imagine a dual G3 1.1 Ghz powerbook with 200 MHz FSB, 1MB L2cache per chip and 4.5 hours of battery life. It would toast any G4 in most tasks (except altivec instructions on non MP aware programs ) and probably most x86 laptops as well.