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But at this point, it’s foolish to speculate on how Apple will price PPC970 systems. At WWDC they’re supposed to introduce 64-bit dev tools as well.įinally, one last thing to keep in mind is that thanks to IBM’s new fabrication facility, the processors will end up costing less than current G4s.
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The installer will simply install a 32-bit kernel and libraries if you are running on a G4 or earlier PPC, and can install a 64-bit kernel and 64-bit and 32-bit libraries if you’re on a PPC970 system. OS X can move to a 64-bit kernel and ABI. Basically, all bottlenecks plaguing the previous Macintosh architecture have been eliminated, and they’re now on-par with high end PC systems in terms of performance.
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The 800MHz front side bus and HyperTransport-based chipset means that they’ll be able to take full advantage of that DDR400 RAM. While PPC970 may not be outperforming x86, it certainly brings Macs back into the game in terms of performance.
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This will allow easy SMP scalability, and hopefully we’ll soon see 4-way PowerMacs and XServes. Of course the most notable transition is a move to the HyperTransport architecture as an interconnect between other processors and their memory, the AGP bus, and the PCI bus. These processors also sport an AltiVec unit, which greatly increases performance on applications optimized to use it.Ī transition to 64-bits allows Apple to use a PPC-optimized Mach-O ABI for 64-bit applictaions, which will greatly increase application performance over the current 32-bit ABI which has been partially blamed for OS X’s performance issues. Of course, this is only raw integer and floating performance. SPEC is one of the most trusted names in benchmarking. A 1.8GHz PPC970 has comparable SPEC scores to a Pentium 4 3.06GHz. What matters is how it compares to today’s processors. Like how much faster IBM PowerPC processors are compared to an IA-64 … Many new myths will have been invented by Apple fans. This is the first 64-bit system based upon a HyperTransport architecture being released to consumers. Until the next overhaul comes to the Apple hardware to keep up with the PC architecture improvementsĬlawhammer-based Athlons aren’t even out yet. This is a full 64-bit workstation supporting the HyperTransport architecture, which will provide incredible degrees of SMP scalability, probably up to at least 8 processors. The only comperable architecture will be provided by the Clawhammer core Athlon XP systems. …and will go on costing twice as much compared to a PC with comparable hardware features.