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Subject: Crafty SPEC

Author: Tom Kerrigan

Date: 10:47:24 06/24/03

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On June 24, 2003 at 09:33:02, Lieven Clarisse wrote:

>Apple and IBM team up to produce the world's most advanced processor.
>
>http://www.apple.com/g5/
>
>
>Forged from a long-standing partnership between two companies committed to
>innovation, the G5 drives the largest performance gain in the history of the
>PowerPC. The 64-bit G5 speeds up to 2GHz and can address 8GB main memory.
>See the benchmarks on the above link.

The world's most advanced processor? *sigh* According to what metric?

Anyway, Apple screwed up with SPEC but IBM didn't. Crafty should perform just as
well on a 970 as on a POWER4, and scale linearly with clock speed, so we can
extrapolate how well the new Macs will perform assuming good compilers:

2GHz PPC 970 = 3.45GHz Pentium 4 = 1.76GHz Athlon XP = 1.89GHz Opteron

So, really, only the P4 is in trouble, except this doesn't take hyperthreading
into account, or the fact that the "Pentium 5" will be out shortly after these
new Macs.

There's some compiler weirdness that makes the AXP look faster than the Opteron
but ballpark-wise, AMD is obviously doing okay vs. PPC.

-Tom



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