Author: Tom Kerrigan
Date: 15:21:19 06/24/03
Go up one level in this thread
On June 24, 2003 at 17:39:44, Ryan B. wrote: >On June 24, 2003 at 13:47:24, Tom Kerrigan wrote: > >>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 > >Different cpus are better with different tasks. I haven?t seen any benchmarks >that consider altivec of which is 4 to 7 times faster in some cases (not a chess >engine). Saying that a 2GHz PPC 970 = 3.45GHz Pentium 4 = 1.76GHz Athlon XP = >1.89GHz Opteron is far too general. For example my Duron 800 PC runs chess >programs faster than my G4 450 but my G4 450 renders images in povray faster >than the Duron. It?s just using different tools for different jobs. > >Ryan Yes, I was speaking in terms of chess/Crafty. Hence the title of the post and the fact that I was extrapolating from Crafty SPEC #s. -Tom
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