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Politics : Formerly About Advanced Micro Devices
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To: Joe NYC who wrote (108575)4/30/2000 12:36:00 PM
From: Dan3  Read Replies (1) of 1571229
 
Re: Willamette, according to the article, has a 32-bit bus....

I've not seen a clear description of that bus. My WAG from what I've seen is that there is no such thing as a "quad pumped 100MHZ 32 bit bus". I doubt anything but an analog device can get more than 2 bits from a cycle.

What could exist is a 64 bit 200MHZ double pumped bus (which is what AMD has been shipping for nearly a year and is about to surpass) that is muxed to a 400MHZ data rate configuration 32 bits wide.

The Intel / Rambus teams appear to be afraid to let anyone understand enough about their proposed products to make an informed decision regarding the worth of those products. Maybe they do have something really great and they're just trying to mislead AMD - but, with the exception of the coppermine cache, they've been hyping junk, not sandbagging, for the last year.

OTOH, here is a quote that contradicts my WAG:

ebnews.com
According to Glenn Hinton, a fellow in Intel's High-Performance Microprocessor Division, the Willamette bus transfers data at the equivalent of 400 MHz: four bits of data are passed each cycle along a 100-MHz bus. As with rival Advanced Micro Devices Inc.'s EV-6 bus licensed from Digital Equipment Corp., the data rate can be increased in future chipsets. Intel said its method will be to either increase the frequency or the amount of data per clock.

Regards,

Dan
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