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Different mobile processors???
OK. I'm looking for a laptop computer and I'm totally confused as to the
different mobile processors. In laptops, I have seen Pentium 4, Mobile Pentium, Pentium M, and Centrino. The Pentium M and Centrino cpu's seem to be fairly slow, starting at 1.3 Ghz. How do the Centrino cpu's compare to the other CPU's? ie. Is a Centrino 1.3 equivelant in speed to a 1.3 Pentium 4? Does anyone have any web sites that compare performance of these different CPU's. Thanks, Henry |
#2
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Henry wrote:
OK. I'm looking for a laptop computer and I'm totally confused as to the different mobile processors. In laptops, I have seen Pentium 4, Mobile Pentium, Pentium M, and Centrino. The Pentium M and Centrino cpu's seem to be fairly slow, starting at 1.3 Ghz. How do the Centrino cpu's compare to the other CPU's? ie. Is a Centrino 1.3 equivelant in speed to a 1.3 Pentium 4? Does anyone have any web sites that compare performance of these different CPU's. "Centrino" is not a CPU per se, it is Intel's name for a constellation of mobile computing parts that includes the Pentium M CPU. The Pentium M (not to be confused with the Pentium 4-M) has a higher IPC than the Pentium 4, so a 1.3 GHz Pentium M will be faster than a 1.3 GHz Pentium 4. -- Mike Smith |
#3
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"Henry" wrote in message
.rogers.com... OK. I'm looking for a laptop computer and I'm totally confused as to the different mobile processors. In laptops, I have seen Pentium 4, Mobile Pentium, Pentium M, and Centrino. The Pentium M and Centrino cpu's seem to be fairly slow, starting at 1.3 Ghz. How do the Centrino cpu's compare to the other CPU's? ie. Is a Centrino 1.3 equivelant in speed to a 1.3 Pentium 4? Does anyone have any web sites that compare performance of these different CPU's. The Pentium-M and the Centrino are really the same thing. The Centrino refers to a whole family of chips that surround a Pentium-M processor; if you have a Pentium-M chip surrounded by this family of Intel chips, then you have a Centrino laptop. You can also have a Pentium-M chip surrounded by third party chips not made by Intel, and in that case you don't have a Centrino laptop, just a laptop with a Pentium-M and other chips. Now, the Pentium-M runs at slower speed than a Pentium 4-M processor, but it runs more instructions at once, so it tends to have even overall performance. A 1.3Ghz Pentium-M or Centrino system would be the equivalent of a 2.0Ghz Pentium 4-M system. Yousuf Khan |
#4
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"Mike Smith" wrote in message ... Henry wrote: OK. I'm looking for a laptop computer and I'm totally confused as to the different mobile processors. In laptops, I have seen Pentium 4, Mobile Pentium, Pentium M, and Centrino. The Pentium M and Centrino cpu's seem to be fairly slow, starting at 1.3 Ghz. How do the Centrino cpu's compare to the other CPU's? ie. Is a Centrino 1.3 equivelant in speed to a 1.3 Pentium 4? Does anyone have any web sites that compare performance of these different CPU's. "Centrino" is not a CPU per se, it is Intel's name for a constellation of mobile computing parts that includes the Pentium M CPU. The Pentium M (not to be confused with the Pentium 4-M) has a higher IPC than the Pentium 4, so a 1.3 GHz Pentium M will be faster than a 1.3 GHz Pentium 4. -- Mike Smith Thank you, I think I'm starting to understand this. The centrino incorporates several pieces of hardware to become a centrino...including a Pentium-M cpu. |
#5
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"Yousuf Khan" wrote in message ogers.com... "Henry" wrote in message .rogers.com... OK. I'm looking for a laptop computer and I'm totally confused as to the different mobile processors. In laptops, I have seen Pentium 4, Mobile Pentium, Pentium M, and Centrino. The Pentium M and Centrino cpu's seem to be fairly slow, starting at 1.3 Ghz. How do the Centrino cpu's compare to the other CPU's? ie. Is a Centrino 1.3 equivelant in speed to a 1.3 Pentium 4? Does anyone have any web sites that compare performance of these different CPU's. The Pentium-M and the Centrino are really the same thing. The Centrino refers to a whole family of chips that surround a Pentium-M processor; if you have a Pentium-M chip surrounded by this family of Intel chips, then you have a Centrino laptop. You can also have a Pentium-M chip surrounded by third party chips not made by Intel, and in that case you don't have a Centrino laptop, just a laptop with a Pentium-M and other chips. Now, the Pentium-M runs at slower speed than a Pentium 4-M processor, but it runs more instructions at once, so it tends to have even overall performance. A 1.3Ghz Pentium-M or Centrino system would be the equivalent of a 2.0Ghz Pentium 4-M system. Yousuf Khan Thank you Yousuf. Does the pentium-m do a better job at conserving power that the pentium 4-m, because it runs at a lower Ghz? I am looking for a notebook with long battery life. I'm guessing the pentium-m is what I want. Henry |
#6
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"Henry" wrote in message
e.rogers.com... Thank you Yousuf. Does the pentium-m do a better job at conserving power that the pentium 4-m, because it runs at a lower Ghz? I am looking for a notebook with long battery life. I'm guessing the pentium-m is what I want. Yes, that's part of the theory behind the Pentium-M in a simplistic way. The fact that the P-M runs at lower Mhz than the P4-M allows it to run cooler and use up less electrical wattage. There's more to it than that. There's actually circuitry inside the P-M that switches unused parts of the CPU off while it's not needed; the Pentium 4-M can't match that capability. It's also the theory behind Intel's competitors offerings, such as the AMD Athlon XP-M which also runs at lower Mhz than the P4-M, and also has electricity saving circuitry inside the processor itself. Transmeta's Crusoe processor sports similar technology. The basic gist you get out of all of this is: that a laptop processor should usually run at lower Mhz, and sport some form of electricity saving circuitry, in order to get you good battery life. Yousuf Khan |
#7
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"Henry" wrote in message
le.rogers.com... Thank you, I think I'm starting to understand this. The centrino incorporates several pieces of hardware to become a centrino...including a Pentium-M cpu. And actually recently SiS introduced a Pentium-M companion chipset that does the same sort of thing as the overall Centrino chipset. http://www.ebnonline.com/showArticle...cleID=14700133 http://tinyurl.com/mohz So you're not required to have a Centrino in order to get Centrino features, you can just as well do with a Pentium-M with a SiS chipset. Yousuf Khan |
#8
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In article . rogers.com,
Yousuf Khan wrote: | "Henry" wrote in message | le.rogers.com... | Thank you, I think I'm starting to understand this. The centrino | incorporates several pieces of hardware to become a centrino...including a | Pentium-M cpu. | | And actually recently SiS introduced a Pentium-M companion chipset that does | the same sort of thing as the overall Centrino chipset. | | http://www.ebnonline.com/showArticle...cleID=14700133 | | http://tinyurl.com/mohz | | So you're not required to have a Centrino in order to get Centrino features, | you can just as well do with a Pentium-M with a SiS chipset. I wouldn't give two cents for WiFi, but the battery life of Centrino (reported by people who don't sell it) seems much better than just Pentium-M (yes I know there are two versions of that). The whole reason I would buy Centrino is to get the battery life, WiFi is just another security risk to disable :-( -- Bill Davidsen CTO, TMR Associates As we enjoy great advantages from inventions of others, we should be glad of an opportunity to serve others by any invention of ours; and this we should do freely and generously. -Benjamin Franklin (who would have liked open source) |
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