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Pentium 4 dual-core details emerge
Looks like Intel's dual-core P4 processors will be codenamed Paxville and
Dempsey. Yousuf Khan ----- http://www.geek.com/news/geeknews/20...0817026514.htm quote Again, AMD is setting the bar for future processor technology, but this time Intel is not going to be caught with their pants down. With the introduction of 64-bit mainstream processors, Intel made two mistakes. First, they underestimated the demand. And second, they weren't ready with a competing product anywhere near the time of release. It seems that they take AMD and its promises more seriously now, as they have proposed two dual-core Pentium 4 processors to compete with AMD's first dual-core processors in the middle of 2005. The two processors, codenamed Paxville and Dempsey, will simply be two Pentium 4 cores printed on one die, and neither will offer any significant architectural improvement in the core. Paxville, which will be released first, will be architecturally equivalent to a dual-Xeon setup, which means it will have a relatively slow shared bus and a relatively enormous cache. Given the size and thermal dissipation characteristics of the Prescott, this dual-core behemoth will probably have reduced core and bus clock rates, and will have little to boast about. On the other hand, Dempsey brings an important feature to the table. Dempsey, which will be released after Paxville, will sport a complex bus arbitration unit. This will reduce the load on the bus and therefore allow Intel to scale the bus clock frequency very high, which will still not solve the shared bus problem, but will at least be an impressively efficient workaround. The disadvantage to this method is that it will slightly increase the bus latency, and that bus is used for all processor I/O and memory transactions so there are millions of transactions per second, and even a small latency can build up under those circumstances. Intel's biggest problem is that they are sticking with the Pentium 4 core. They have learned that AMD is a force to be reckoned with, and have prepared a response to AMD's initial dual-core offering, but with the limitations imposed by the existing P4 architecture, they will likely lag behind AMD performance. /quote |
#2
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With a massive AMD slant of course
"Yousuf Khan" wrote in message t.cable.rogers.com... Looks like Intel's dual-core P4 processors will be codenamed Paxville and Dempsey. Yousuf Khan ----- http://www.geek.com/news/geeknews/20...0817026514.htm quote Again, AMD is setting the bar for future processor technology, but this time Intel is not going to be caught with their pants down. With the introduction of 64-bit mainstream processors, Intel made two mistakes. First, they underestimated the demand. And second, they weren't ready with a competing product anywhere near the time of release. It seems that they take AMD and its promises more seriously now, as they have proposed two dual-core Pentium 4 processors to compete with AMD's first dual-core processors in the middle of 2005. The two processors, codenamed Paxville and Dempsey, will simply be two Pentium 4 cores printed on one die, and neither will offer any significant architectural improvement in the core. Paxville, which will be released first, will be architecturally equivalent to a dual-Xeon setup, which means it will have a relatively slow shared bus and a relatively enormous cache. Given the size and thermal dissipation characteristics of the Prescott, this dual-core behemoth will probably have reduced core and bus clock rates, and will have little to boast about. On the other hand, Dempsey brings an important feature to the table. Dempsey, which will be released after Paxville, will sport a complex bus arbitration unit. This will reduce the load on the bus and therefore allow Intel to scale the bus clock frequency very high, which will still not solve the shared bus problem, but will at least be an impressively efficient workaround. The disadvantage to this method is that it will slightly increase the bus latency, and that bus is used for all processor I/O and memory transaction s so there are millions of transactions per second, and even a small latency can build up under those circumstances. Intel's biggest problem is that they are sticking with the Pentium 4 core. They have learned that AMD is a force to be reckoned with, and have prepared a response to AMD's initial dual-core offering, but with the limitations imposed by the existing P4 architecture, they will likely lag behind AMD performance. /quote |
#3
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Judd wrote:
With a massive AMD slant of course Can't help that Judd, Intel is in a catch-up mode, while AMD is rolling through a pre-planned course. Anything Intel does now is going to seem reactionary and comical. Yousuf Khan |
#4
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Bitstring
ble.rogers.com, from the wonderful person Yousuf Khan said Judd wrote: With a massive AMD slant of course Can't help that Judd, Intel is in a catch-up mode, while AMD is rolling through a pre-planned course. Anything Intel does now is going to seem reactionary and comical. It's certainly comical that they apparently didn't have a good solution for dual cores in the roadmap .. people have been talking about dual CPU consumer PCs for years, if not decades, Win2k/Xp-Pro both support it, Workstations have had it for years, Intel had the 'Hyperthreading' ball in play .. and then suddenly appear surprised when it turns out that AMD are planning to do the obvious (with what looks like it might be a pretty slick solution). I mean I've heard of taking your eye off the ball, but in this case it seems like someone at Intel must have completely left the stadium. -- GSV Three Minds in a Can Outgoing Msgs are Turing Tested,and indistinguishable from human typing. |
#5
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GSV Three Minds in a Can wrote:
I mean I've heard of taking your eye off the ball, but in this case it seems like someone at Intel must have completely left the stadium. Interesting article written up today by Kevin Krewell, noting AMD's resurgence: http://www.mdronline.com/watch/watch...179&on=1#item1 Basically goes through some of AMD's history, and it's various turning points that shaped it. It seems to be relatively uncolored by propaganda. Yousuf Khan |
#6
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Ed wrote:
On Tue, 17 Aug 2004 23:48:08 GMT, "Yousuf Khan" wrote: Judd wrote: With a massive AMD slant of course Can't help that Judd, Intel is in a catch-up mode, while AMD is rolling through a pre-planned course. Anything Intel does now is going to seem reactionary and comical. Yousuf Khan AMD has been in catch-up mode since 1969. ;p Ed Exactly, that's why Intel is not used to this position. Well, actually, Intel was in a minor catch-up mode during the original Athlon days too, but it did manage to catch up with P4 during that time, and even passed it for a little while. Yousuf Khan |
#7
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Yousuf Khan wrote:
Looks like Intel's dual-core P4 processors will be codenamed Paxville and Dempsey. Yousuf Khan I would think that the main problem with ANY dual core system is going to be memory bandwidth. To address this you go faster or wider, and Intel has been doing faster for a while. I would suspect that the improved version of the concept would have a dual channel BIU to read double wide data. This helps for large read blocks, not so much for random access of small blocks. That's what I think they mean by "complex bus arbitration unit" or something similar. But none of this addresses the pipeline length, which would benefit from better prefetch and branch prediction. [BIU - bus interface unit, sorry]The newsgroup is _not_ for the purpose of posting binaries, requesting ----- http://www.geek.com/news/geeknews/20...0817026514.htm quote Again, AMD is setting the bar for future processor technology, but this time Intel is not going to be caught with their pants down. With the introduction of 64-bit mainstream processors, Intel made two mistakes. First, they underestimated the demand. And second, they weren't ready with a competing product anywhere near the time of release. It seems that they take AMD and its promises more seriously now, as they have proposed two dual-core Pentium 4 processors to compete with AMD's first dual-core processors in the middle of 2005. The two processors, codenamed Paxville and Dempsey, will simply be two Pentium 4 cores printed on one die, and neither will offer any significant architectural improvement in the core. Paxville, which will be released first, will be architecturally equivalent to a dual-Xeon setup, which means it will have a relatively slow shared bus and a relatively enormous cache. Given the size and thermal dissipation characteristics of the Prescott, this dual-core behemoth will probably have reduced core and bus clock rates, and will have little to boast about. On the other hand, Dempsey brings an important feature to the table. Dempsey, which will be released after Paxville, will sport a complex bus arbitration unit. This will reduce the load on the bus and therefore allow Intel to scale the bus clock frequency very high, which will still not solve the shared bus problem, but will at least be an impressively efficient workaround. The disadvantage to this method is that it will slightly increase the bus latency, and that bus is used for all processor I/O and memory transactions so there are millions of transactions per second, and even a small latency can build up under those circumstances. Intel's biggest problem is that they are sticking with the Pentium 4 core. They have learned that AMD is a force to be reckoned with, and have prepared a response to AMD's initial dual-core offering, but with the limitations imposed by the existing P4 architecture, they will likely lag behind AMD performance. /quote Interesting that they didn't add a few more arithmetic units and step up the performance of HT. -- -bill davidsen ) "The secret to procrastination is to put things off until the last possible moment - but no longer" -me |
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