Rambus (RMBS) - Eagle or Penguin Message Board

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Technology Stocks : Rambus (RMBS) - Eagle or Penguin

RMBS 94.23

-11.1%

Dec 12 9:30 AM EST

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To: Tenchusatsu who wrote (31363)	10/1/1999 4:15:00 PM
From: Dan3	Read Replies (1) of 93625

Re: PC Magazine compares 820 and RDRAM vs. VIA and PC133 VC-SDRAM... Interesting test. It would have been more interesting if they had used a 600B instead. The test seems to indicate more of a problem with a network or network DMA driver than a chipset constraint. The micron outperforms the others in disk i/o, and the Maxtor 6800 has an average sustained data streaming rate of 512 * 380 * 7200 / 60 = 23.3 MegaBytes/Sec or something better than 200 mb/sec. Well above any sustained data transfer rate that you can get from a 10/100 network card using an NT, Linux, Novell etc. I took my 380 as a typical sectors/track figure for a system with 262 to 462 sectors/track (you need to weight a little higher than average number since a greater percentage than 50 of the sectors are on the longer tracks) In other words, on the disk i/o test, which is a more significant test of streaming data rates, the VC133 outperformed the other systems. In the network i/o test, which is constrained by the network, network card drivers, and network card DMA drivers, the rambus did better. this was not a very good showing for rambus, but there could easily be a driver problem here, as well as with the network card. PC magazine has a way of letting the mainstream system look good if that system is fairly close. I dropped my subscription after having had it for many years because I felt they had become more of a press release echo than an independent magazine. I would like to see what these systems could do with a 133MHZ memory bus CPU. Dan

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