-------------- the message below is from other site --------
Fan-free Athlon Palomino 'runs at 1.5GHz'
By: Andrew Thomas
Posted: 04/12/2000 at 12:42 GMT
Following our report last week that AMD was experimenting with a new pure form of silicon (later confirmed by www.AMDzone.com ), news reaches The Reg of Chimpzilla's progress with the upcoming Palomino.
A new natural substance that dissipates heat much better than ceramics is being tested and a Palomino prototype is reported to be running in AMD's Fab25 in Austin at 1.5GHz with a simple passive heat sink.
Details of temperatures have yet to leak, but the test chip is said to use aluminum, rather than copper interconnects.
A Fab 25 insider said Palomino was "looking good". ?
The Register is reporting persistent rumors that Advanced Micro Devices Inc. is working on a 1.5GHz Athlon Palomino that would be cooled using only a passive heatsink. The report has it that the chip, being developed at AMD's Fab25 in Austin, uses a new and purer form of silicon as well as aluminum connections.
AMD tests 'super silicon' to beat heat problems
By: Andrew Thomas
Posted: 30/11/2000 at 12:46 GMT
When we cast doubt on AMD's abilty to produce an Athlon running at 1.7GHz that wouldn't run so hot it melted the solder on the mobo, we received the usual flood of 'you're in Intel's pocket' emails.
But in among the venom lurked an interesting item: a reader claimed that, for over 12 months, AMD has been quietly producing test chips using a new, pure version of silicon with greatly enhanced thermal properties, making a 1.7GHz Palomino a more practical proposition.
California-based Isonics produces an isotopically pure silicon which has much better thermal conductivity than natural silicon, meaning that heat can be removed more effectively. Isonics won't confirm it's working with AMD, stating only that "a major microprocessor manufacturer has modeled isotopically pure silicon wafers and has told us that the peak temperature of their advanced 1GHz microprocessor was reduced by 35 degrees celsius."
Heat sinks and on-board fans are not practical when CPU power goes above 100W. Intel's new Pentium 4 is rated at around 50W. Closed-loop cooling systems can increase the performance of existing designs, but they would cost more than the microprocessor itself.
Isonics believes it can profitably provide isotopically pure silicon bulk wafers for less than $10 per microprocessor, possibly much less. This compares with $10-30 for a fan and heat sink and looks a far better bet than a closed-loop cooling system costing several hundred dollars.
Isotopically pure silicon is chemically the same as regular silicon and can be used in existing manufacturing processes without any changes.
Warning: science ahead
Silicon exists in nature as three stable, non-radioactive, isotopes: Si-28 (92 per cent), Si-29 (five per cent) and Si-30 (three per cent). By purification at the sub-atomic level, it is possible to remove essentially all of the Si-29 and Si-30 leaving isotopically pure Si-28, which has a more perfect crystal structure.
This more perfect crystal structure exhibits reduced phonon-phonon and phonon-electron interactions which increases certain transport properties, such as thermal conductivity. It has been demonstrated in the laboratory that isotopically pure Si-28 has 60 per cent better room temperature thermal conductivity than natural silicon with its three isotopes.
This next artical was translated from german to english, so sorry for the strange way it sounds...
AMD wants to manufacture 2-GHz-CPU in Dresden
The AMD Halbleiterwerk in Dresden wants to manufacture 2002 2-GHz-Prozessoren in the first yearly half. Test production for the AMD processors of the noted generation with the code name hammer is to already start in the next year, said the managing director of the AMD Saxony Manufacturing GmbH, Hans Deppe, on Monday in Dresden.
The near future in AMDs Fab 30 belongs however first times to the AMD processor with the code name Palomino, which is to appear in the first quarter 2001 and to achieve in the second quarter 1.5 GHz clock, said Deppe. The specifications for the year 2000 are already in November fulfilled, so that the prognoses failed for the next year well: AMD wants to increase the pure space surface and to increase the number of the coworkers, which had grown in this year of 400 to 1400, again to similar extent. In the Roadmap conversions specified of the manufacturing to 0,13 µm and silicone on Insulator (SoI) are to take place naturally also in Dresden. Together with the factory in Austin AMD would like in the next year 40 million processors to sell, after this year 28 million Athlons and Durons were delivered.
The good yield of the manufacturing settles also in the price. According to rumors AMD wants to react on 14 December to the price reductions designated by the ore competitor Intel for 10 December. For example the price of the Athlon with 1 GHz from at present 350 to 182 US Dollar is to fall. Intel already plans the Pentium 4 and the Foster with 2 GHz for end of 2001 . ( jow / c't)
More info on this AMD's 1.5Ghz processor here: