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Technology Stocks : Rambus (RMBS) - Eagle or Penguin -- Ignore unavailable to you. Want to Upgrade?

To: pheilman_ who wrote (54688)	9/22/2000 2:59:07 PM
From: Don Green	Read Replies (1) \| Respond to of 93625

Pentium 4 pricing revealed By: Andrew Thomas Posted: 22/09/2000 at 15:59 GMT Intel's Pentium 4, due for launch at the end of October, may initially only be available in 1.3 and 1.4GHz variants, very reliable sources told The Register today. The evidence comes in the shape of the pricing for the new chip - The 1.3Ghz P4 is priced at $635, while the 1.4GHz variant will set you back $805. There is no mention of a price for a 1.5GHz or higher part. The prices themselves are quite attractive - a 1GHz PIII currently lists at $719, although this will almost certainly drop below $500 when Willamette / P4 hits the streets at the end of next month. Of course, the rest of the shooting match will add up to a fair few extra bucks, what with P4 initially demanding a Rambus, aka expensive, memory solution. ®

To: pheilman_ who wrote (54688)	9/22/2000 3:18:21 PM
From: John Walliker	Respond to of 93625

pheilman, Spread spectrum does reduce the interference from computers. Yes, sometimes. The object is to reduce the energy measured in a 200kHz bandwidth so as to pass the certification tests. If the communication system involved has a wider bandwidth, then it may make no difference. TV is a special case of a broad-band signal where narrow-band interference is visually disturbing, and spreading it out a bit reduces the visibility of the interference. However, many of the spread spectrum clocks use a constant modulation frequency which just adds sidebands without making the signal look like gaussian noise. As for RDRAM, spread spectrum clocking is standard. "The Direct Rambus clock generator (DRCG) provides the necessary clock signals to support a Direct Rambus memory subsystem. ... Spread Spectrum Clocking Tracking Capability to Reduce EMI" ti.com While PCB tracks potentially radiate more at higher frequencies, RDRAM has the advantage of using well terminated transmission lines which minimises the radiation associated with resonance peaks on conventional memory systems. Also, the smaller number of conductors and the differential clock help in this respect. John

To: pheilman_ who wrote (54688)	9/22/2000 6:26:45 PM
From: Bilow	Read Replies (1) \| Respond to of 93625

Hi pheilman_; Re "Why doesn't Xilinx support RSL? 'Coz it will be a brisk day in heck when they are willing to pay royalties to include the RAC in their general purpose chips." LOL! Are you aware that both Altera and Xilinx provide DDR SDRAM interfaces on their chips? It's not dedicated, but instead consists of "soft macros". In other words, they provide the IP. If Rambus wins the DDR royalty battle, I wonder who would pay the royalties, Xilinx or the customer? Seems to me the customer would owe it, as that is who makes the part do the dirty deed. -- Carl