Contingency plans
Here's what Apple needs if it decides to move away from the Motorola PowerPC: An architecture that:
1) Is reasonably fast
2) Has good long-term survival prospects
3) Consumes reasonable amounts of power
4) Will scale upward in performance steadily and rapidly
5) Is inexpensive
6) Is suitable for everything from small notebooks to rack-mount servers to multi-CPU workstations
Let's look at the options.
Alpha: Meets 1.
PA-RISC: Meets 1.
SPARC: Meets 1 and 2.
Itanium: Meets 1, 2, and 4.
IBM G3: Meets 2, 3, and 5.
POWER4-derivative: Meets 1, 2, 4, possibly 5, and possibly 6.
x86: Meets 1, 2, 4, 5, and possibly 6.
MIPS: Meets all of them.
Remember the rumors of Apple buying SGI a while back? Guess whose markets in midrange graphics and visualization Apple is aggressively pursuing: SGI's. Isn't it interesting that SGI designs its own chips? At the moment, their fastest chip runs at 600MHz, but it performs faster than a 1GHz G4 (AltiVec aside). Note, though, that it only consumes 18 watts of power on a .13u process. Think of what that could mean for Apple.
Here is what a buyout of SGI would give to Apple:
- A great, efficient, scalable processor architecture that, although low-clocked, is still a good performer (substantially better than PPC) and is on the cutting edge of processor design without being tied to any single manufacturer.
- With that processor architecture would come a way out of PowerPC, or a backup plan if they decide to stick with PowerPC.
- A better foothold in the low-end and midrange graphics markets, not to mention complete domination in high-end graphics. (High margins and big profits)
- An excellent engineering team, responsible for pioneering NUMA etc.
- An awesome filesystem (XFS)
- Instant cred in the Unix markets. Nobody's going to be saying "Apple is a toy maker" when there exist 1024-processor Apple Origin 3000s.
- Huge discounts on hardware for Pixar.
A MIPS Mac would mean an INCREASED distinction between Macs and PCs, not the decreased distinction everyone seems to be (stupidly) clamoring for. Imagine a quad-CPU MIPS Mac that would draw less power than a single-CPU Itanium or POWER4 - not to mention all 4 CPUs combined would cost less.
I really hope Apple does NOT move anywhere NEAR x86, as it is a crap, brute-force hack job of an architecture (I said crap, not slow) that has spelled either gloom or death for most every alternative OS maker ever to set foot on it (Be, NeXT, and IBM come to mind; Linux is small beans and mostly non-commercial and it doesn't count). Let's embrace modernity and efficiency! Let's snub our noses at the 6-pound heat sinks and 10,000 rpm cooling fans and 400-watt power supplies of the x86 world. They may be faster, but they're nowhere near as elegant or well-designed.
Alex