Author: Terry McCracken
Date: 15:11:44 02/28/02
Go up one level in this thread
On February 28, 2002 at 17:53:59, Jeremiah Penery wrote: >On February 28, 2002 at 17:15:41, Terry McCracken wrote: > >>On February 28, 2002 at 05:39:56, Aaron Gordon wrote: >> >>>I know a few of you here are interested in the AMD vs Intel thing and just speed >>>in general. Well, here you go. Crafty benchmarks of CPU's clocked beyond >>>anything thats out currently. This should show us what we can expect in the near >>>future as clock speeds ramp up even further. >>> >>>Just got a friend to test Crafty on his new Northwood P4-1.8A at >>>2465MHz(137fsb). He's using a Pentium 4 optimized (and profiled) Crafty v18.11. >>>I am using Crafty 18.11 profiled for the AthlonXP. The results were taken >>>without a crafty.rc file. Here they are... >>> >>>Intel Pentium 4 (Northwood) 1800MHz overclocked to 2465MHz, 137fsb. >>>Total nodes: 104161030 >>>Raw nodes per second: 992009 >>>Total elapsed time: 105 >>>SMP time-to-ply measurement: 6.095238 >>> >>>AMD AthlonXP 1900+ 1600MHz overclocked to 1860MHz, 155fsb. >>>Total nodes: 104161030 >>>Raw nodes per second: 1197253 >>>Total elapsed time: 87 >>>SMP time-to-ply measurement: 7.356322 >>> >>>As you can see here... the Pentium 4 having twice the L2 and 605MHz more than >>>the AthlonXP still gets beaten by over 20%. Not too shabby I figure. :) Can't >>>wait for the AMD Hammer (x86-64)... >> >> >>Intel Pentium 4 (Northwood) 1800MHz overclocked to 2465MHz, 137fsb >> >>I see a couple of problems here. One the "Northwood" core AFAIK is 2.2Ghz before >>overclocking. You have it at 1.8Ghz? This appears to be the "Willamette" core on >>a 0.18 micron process. > >You can buy Northwoods at 1.6, 1.8, 2.0, and 2.2 GHz. I didn't know that thanks. > >>The other problem, is the bus 137Mhz, that is _slow_ and can't be using either >>DDR-SDRAM or RDRAM. > >P4 default bus speed is 100MHz, though it is quad-pumped to make it effectively >400MHz. Yes it is quad-pumped, but this wasn't clear from what I read in this post. > >>If you use RDRAM at 400Mgh with a "Northwood" core at 2.2Ghz or faster then your >>results will be far higher for your Crafty Benchmark/P-4 test. > >I bet it would do just as well with DDR memory. RDRAM has a high latency, which >is not so good for chess programs. I can't say much there, I don't know, it's better for the P-4 in general but chess the DDR-SDRAM may be better? Of course that wouldn't surprise me:) The 533Mghz Bus should also help, when it's out. However you're suggesting the bus was 400Mhz quad-pumped and was overclocked to 137Mhz making it 548Mghz. Anyways, I've seen better results posted here for the P-4 then this particular test. Regards, Terry
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