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

To: Bilow who wrote (39763)	4/13/2000 4:07:00 AM
From: Tenchusatsu	Read Replies (3) \| Respond to of 93625

Carl, I wonder how Sony Playstation 2 handles heat dissipation on their two RDRAM chips. Each chip is attached to its own channel. And you can bet that while the kids (and grown-up kids like myself) play Tekken Tag Tournament, both chips are going to be accessed like crazy. Even a heat spreader the size of a RIMM module isn't going to cut it, since all of the heat is localized within those two devices, unlike a RIMM which can assume that a single device is not going to be active all the time. <a good proportion of the bulls on this thread would take issue with your statement that it is a good trading stock. They prefer it as a buy and hold stock, I believe.> INTC is a good buy and hold stock. RMBS unfortunately will still be in speculation mode as the hype-vs-FUD war continues. Anyone who prefers to buy and hold RMBS stock, well, deserves all of the rewards and consequences that goes with it. Tenchusatsu

To: Bilow who wrote (39763)	4/13/2000 5:02:00 AM
From: John Walliker	Read Replies (1) \| Respond to of 93625

Carl, May I suggest that you make your power comparisons using chips from the same company - Samsung perhaps. That would eliminate artefacts due to process variations and differing ways of writing data sheets. Also ensure that the chips are the same density and are in full production as data sheets are often adjusted at this stage. Until you do this, any attempt at comparison is a waste of time. As scumbria pointed out, there is very little difference between the internals of DDR and Rambus memory that could give rise to large power consumption variations. The differences will mostly be at the system level in relation to input/output. I also suggest that before revisiting these calculations you explain whether or not they are based on terminated signal lines, and if so what characteristic impedance you have chosen in each case. If unterminated, please indicate the number of memory module sockets you expect to see in your chosen system. John PS Perhaps one of the thread members who has dismantled a Playstation 2 would be kind enough to tell us the size of the heat sink on the Rambus memory?

To: Bilow who wrote (39763)	4/13/2000 9:30:00 AM
From: Dave B	Read Replies (1) \| Respond to of 93625

Now I'll admit that I've been a little unfair in these calculations. But the other side was quite a bit more unfair in the other direction. The best way to test this is to get two machines, one with RDRAM, the other with SDRAM, and with equivalent motherboards and processors (if you could do that), and measure the power consumption. Thanks for admitting your own biases. But in the grand view, it's irrelevant minutiae since 99 44/100's of the customers won't care. Under that test, I have no doubt that RDRAM gets toasted. Not a problem since in the trade press the Athlon systems are getting "smoked" by the PIII/RDRAM systems.