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

To: John Walliker who wrote (42715)	5/22/2000 8:24:00 AM
From: gnuman	Read Replies (1) \| Respond to of 93625

Anand on Rambus, part 2 This report will probably create a lot of discussion on the boards. An i440BX133/PC133 appears to be his choice for now. (He cites sources for mobo's in this configuration). It beats an 840/PC800 in a number of benchmarks. (No DDR platform to test). It appears to support many of Tom Pabst's results. anandtech.com JMHO's

To: John Walliker who wrote (42715)	5/22/2000 4:49:00 PM
From: Bilow	Read Replies (1) \| Respond to of 93625

Hi John Walliker; Re Anand's temperature measurements... You wrote: "You pointed out that the ambient temperature was not quoted, so concluding anything about relative power consumptions is impossible." RDRAM measured hotter than SDRAM. Dramreview claims that SDRAM uses 4x more power. Contradiction. Get it now? You wrote: "Another point is that the thermistor was relatively large and had fairly thick connecting wires. The thermal loading due to the thermistor will have had a greater effect on the SDRAM plastic package than on the aluminium heat spreader, so causing a larger under-reading for the SDRAM than the DRDRAM." This is silly. Have you ever done a thermocouple temperature measurement? Nobody uses low gauge wire for that purpose. Oh well, take another look at the picture: anandtech.com Those "fairly thick connecting wires" are heat shrink type insulation, connecting to high voltage safety VOM leads. The thermocouple wires are probably no more than about 20 gauge, and in any case are thermally insulated from the air, (as well as electrically insulated from other conductors). Do those skinny wires really look like a heat sink to you? The basic law of thermal heat conductivity says that you are not going to get a lot of heat transfer down long thin insulated wires. Also notice the big piece of tape on the SDRAM. That will tend to raise its temperature, as it is a lot larger, relatively, than the tape on the RIMM. - Carl