Author: Laurence Chen
Date: 05:32:57 01/20/01
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On January 19, 2001 at 16:11:23, Vincent Diepeveen wrote: >Hello, > >I did a small comparision between 1 Ghz FCPGA cpu mounted on a >slot1 motherboard Asus P3v4x with a converter stepping cCo. >It has 133Mhz 2-2-2 SDRAM > >I compared with my OWN slot1 dual 800PIII-cumine bx supermicro motherboard. >In my motherboard there is only 100Mhz 3-3-3 SDRAM. > >At those huge speeds of processors SDRAM makes a big difference! > >HOWEVER, when i ran the same version with the same amount of hashtables >(40mb for this test) and also on the 1 Ghz machine, >then the difference was ONLY 9% speed. > >So the 1Ghz machine WAS ONLY 9% faster as a single 800Mhz of mine. > >Now we can complain about the OS and about a few programs that >ran on both machines, but those hardly eated system time. > >Speed difference on paper should be 30% of so, and there is a HUGE >gap between 9% and 30%. > >What did INTEL do to the FCPGA processors, and do others have the >same results there as i have here? > >Unless this speed difference was because of some mistake like >a bug in the comparision at any point, i am VERY dissappointed!! > >Greetings, >Vincent The 133 MHz mainboard you are using for the 1 GHz Pentium III uses the VIA133A chipset, it is known that the VIA chipset memory latency is much slower than the BX400 chipset which you are using on the 800 MHz Pentium III. So the problem is not the Intel Chip but the chipset in the mainboard. You can go to Anandtech or Tom's Hardware to see the benchmarks comparison between the VIA and BX chipset, and they will tell you that memory latency is the problem with the VIA chipset. A solution is to run your 1GHz Pentium III on a i840 chipset with RDRAM, however, that will cost you a lot of money because RDRAM is not chip. Regards, Laurence
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