That is not correct. Here is a reading on what the Motorola 7447a
The MPC7447A processor is a high-performance, low-power, 32-bit implementation of the PowerPC RISC architecture. Key architectural features include 512 KB of on-chip L2 cache, a 64-bit bus interface and a full 128-bit implementation of Motorola's AltiVec technology. MPC7447A processors are ideal for leading-edge computing, embedded network control and signal processing applications.
While here is a writeup on the MPC7447
Building on Motorola's continued innovation and performance leadership in the high-performance host processor market, the MPC7447 achieves two major milestones in the embedded world: It delivers 1.3 GHz of performance--making it Motorola's fastest PowerPC processor available for embedded applications. It also dissipates less than 10W while running at 1GHz--a critical threshold for many power-sensitive embedded designs.
The A version runs at speeds exceeding 1.5 ghz, while the Normal version which was seen in the Powerbook Aluminum Rev A was a 1.3 ghz processor underclocked to 1.25 ghz and over clocked to 1.33 ghz. These processors were made under the MPC7447 Processor from Motorola and Currently, the only machines still using the MPC7447 processor in this form are the Powerbook 12", The Powerbook 15"(1.33 Ghz) and the 14" Ibook with a totally earlier gen of this processor.
However the only basic differences other than speed on these processors, is a more powerful implementation of Altivec Technology, Increased Speed(small increase as you can see), and SOI(Silicon on Insulatior Design which increases performance while reducing power requirments and heat production. The MPC7447a is only made in speeds of 1.5 ghz and really cannot be underclocked by the speed needed to make 1.33ghz) While the changes are not great over the 1.33 ghz MPC7447 chip, the 1.5 ghz MPC7447A Chip is faster, lower power +heat, and better altivec performance, but nothing more.
However, I would recommend the more expensive 15" powerbook because of
1) Faster, Better performance
2) Superdrive
3) Backlit Keyboard is actually pretty cool
4) Better for things that can benefit from that speed increase including FInal Cut, DVD SP, and More
etep said:
Any facts to back this claim up? I thought that all new PowerBooks used the 7447A.
