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The G4 Processor: Under the Hood
September 22, 1999  
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OS and Conclusion

A Good OS is Hard to Find

Another thing to remember is the OS factor. Fast hardware cannot make up for the shortcomings of a poor OS, and OS 8.6 still has many shortcomings. While it is undoubtedly the king of usability, OS 8 still lacks preemptive multitasking, memory protection, or true multi-threading. As a result, OS 8 is not much more stable than Win98, and is definitely less stable than Windows NT. Unfortunately, Apple does not offer a workstation OS (ala NT) for even its $3500 computer. This will change with the release of Mac OS X, which is based on the Mach microkernel and a number of BSD (Berkeley Software Distribution) features such as the BSD process model. The non-Apple alternatives are Linux and BeOS, both of which are much more stable and faster than OS 8, but neither supports some staple Mac applications, such as Photoshop and PageMaker.

Conclusion

The Motorola PowerPC 7400 processor is awesome. We should give mad props to Motorola's engineers for a job well done. I have to reserve my applause for Apple, however. It seems that Apple rushed the production of the G4 to the determent of its engineering. The evidence for this conjecture? First, the only G4 currently available is a rehash of the G3 with a different CPU and a new color.

Second, Apple severely limited the performance of their systems by including an ATI video card with no option to get a factory upgrade. Beyond that, even the new Sawtooth motherboards won't be able to support the G4s external 128-bit memory and system bus. It's undoubtedly true that the G4 is currently the fastest system for working with 2D images or video, as well as with scientific floating point calculations, but it will not be a contender in the 3D arena until it has stable support for the cutting edge video cards on the market. Average integer performance, as well as questionable clock limit of 500Mhz, mean the G4 doesn't have any special qualifications for regular office applications (of course, who needs a PIII-600 for Word?).

Bottom line: the G4 is the fastest desktop computer you can buy for image manipulation or video editing. Combined with a DVD-RAM drive and built-in FireWire, the G4 offers a compelling package for bedroom directors or companies that do some digital video work. However, the G4 is still hampered by Apple's proprietary history, and currently lacks many choices in 3D hardware. If you're a Photoshop or video editing fan, the G4 is probably for you. Otherwise, you may want to wait for a better OS and more video card choices.

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