Author: Matt Taylor
Date: 09:14:49 12/17/02
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On December 17, 2002 at 11:30:36, Robert Hyatt wrote: >On December 17, 2002 at 11:28:27, Matt Taylor wrote: > >>On December 17, 2002 at 11:20:38, Enrique Irazoqui wrote: >> >>>Deep Fritz 7 runs about 8% faster on a dual Xeon 2400 (detected as 4 cpus)than >>>on a dual AMD MP 2200+ (2x1800 GHz). Both with DDR 333. >>> >>>Enrique >> >>Which board/chipset? I haven't seen any SMP boards that support better than a >>133 MHz FSB, and it's been a bitter disappointment. >> >>-Matt > > >hard to compare FSB clock speeds when double-pumping and quad-pumping are thrown >in. I think it stupid of Intel to say "quad-pumped 133" since it really isn't >133. It is >4 X 133. Do that and you get the DDR nonsense. "Oh it's a 333 MHz bus." No. It's a 166 MHz bus. It smells, looks, tastes, and acts like a 166 MHz bus. It has the latency of a 166 MHz bus. It has twice the throughput, but it is still a 166 MHz bus. It is DDR, but it is not 333 MHz. I'd imagine you could get rich off of all this false advertising. It is really difficult to define what they mean by "quad-pumped." Whether through ignorance or whatnot, I hear people refer to DDR as "double-pumped" and RDRAM as "quad-pumped," but RDRAM uses a dual-channel DDR bus. Either I'm missing something or the whole idea of "pumped" is ambiguous. Maybe the people I talk to are idiots. I don't know.
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