What is the difference between Intel Pentium IV processor, Centrino Processor and Celeron?
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Pentium 4s are the current top-of-the-line Intel processor, the Centrino is used in notebooks and has built in wireless capability, Celerons are considered budget processors.  For example:\n\nA Celeron at 3.2 GHz will run slower than a P4 at 2.66GHz.  This is because the Pentium processor performs more work during a clock cycle.  However, Celerons are more highly overclockable and can actually be decent processors.  There are P4s, the P4s with HT, the 64-bit P4s, the p4 dual cores (extreme), and the PentiumD dual cores.\n\nCentrino is not the name of a processor or a computer, it is the name given to the combined technology within the chipset and processor of a notebook PC.
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Pentium M is for Mobile gadgets, it's intended for laptops notebooks, etc. Never use it for a desktop computer. Or if you want to make a light traffic print server, Celeron would make a nicer deal, M is way too powerful and way too expensive for things like that.
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Here are the fastest processors available, from fastest to slowest: Core 2 Duo, Athlon 64 X2's, Athlon 64's, Pentium D's, AMD Semprons, and last, and least, the Celerons.
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CPU Requirements\n\nMinimum: Pentium-class — Fedora Core 4 the latest version of Linux  is optimized for Pentium 4 CPUs, but also supports earlier CPUs (such as Pentium, Pentium Pro, Pentium II, Pentium III, and including AMD and VIA variants). This approach has been taken because Pentium-class optimizations actually result in reduced performance for non-Pentium-class processors, and Pentium 4 scheduling is sufficiently different (while making up the bulk of today's processors) to warrant this change. \n\nAMD64 processors (both Athlon64 and Opteron)\n\nIntel processors with Intel® Extended Memory 64 Technology (Intel® EM64T)\n\nHard Disk Space Requirements\n\nfor 32-bit x86 systems: \nCustom Installation (Minimal): 620MB\nServer: 1.1GB\nPersonal Desktop: 2.3GB\nWorkstation: 3.0GB\nCustom Installation (Everything): 6.9GB\n\nfor 64-bit x86_64 systems: \nCustom Installation (Minimal): 900MB\nServer: 1.5GB\nPersonal Desktop: 2.7GB\nWorkstation: 3.4GB\nCustom Installation: (Everything) 7.5GB\n\nMemory Requirements\n\nfor 32-bit x86 systems: \nMinimum for text-mode: 64MB\nMinimum for graphical: 192MB\nRecommended for graphical: 256MB\n\nfor 64-bit x86_64 systems: \nMinimum for text-mode: 128MB\nMinimum for graphical: 256MB\nRecommended for graphical: 512MB\n\n\nHowever the best configuration would be \nMotherboard: P4 - Intel chipset (version: whatever available latest). Always go for an Intel Orignal Chipset to get the maximum performance. WITH TWO IDE and possibly 4 SATA ports.\n\nCPU: 3ghz or more.\n\nRAM: Atleast 1GB. If possible get 2 strips of 512MB each (Again to improve performance on P4 M-Boards)\n\nHarddisk: Atleast 120 GB or more (SATA for faster access)\n\nMonitor: Atleast 17" Samsung recommended\n\nRest all is fancy and depends on your choice. Such as Keyboard, Mouse (Optical Recommended), Cabinet (Black with atleast 2 fans)
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Pentium Xeon is mainly for servers and costs a lot, some use it for 3D rendering. Pentium M uses centrino mobile technology mainly in laptops. The best Pentium Processor is the Intel® Pentium® processor Extreme Edition 955, having two cores @ 3.46Ghz. But the high price of over $1000 scares a lot of customers.\n\nTomshardware Guide compares all kinds of CPUs, here's a link to one of their charts where they list the CPUs according to performance: http://www23.tomshardware.com/cpu.html
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Celeron's are intel processors with smaller cache and slower bus speeds than full fledge petium 4's.\n\nThis article should help you:\nhttp://www.tomshardware.com/2002/09/03/battling_brothers/index.html
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As a rule, never go for a Celeron.\nThe diference is in the arhitecture of the PC itself.\nFor example the Pentium has a 1mb level 2 cache. The Celeron has half of that. This translates in slower speeds at processing flow. \nIf you want the best for your laptop go for the full featured mid-range processor either from AMD or Pentium.\n\nSempron from AMD comes in the same way, with less multimedia instructions and much less cache memory.\n\nI still won't recomend Pentium 4 based laptops because of heat generated by these processor. In laptops this translates in increased speeds from the cooler and faster battery outage. Hold out until the Core 2 Duo laptops jump on the wagon, if they haven't already or move to the AMD based laptops which will give you better performance than Pentium 4.\nWith longer battery life too!
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Those numbers represent how fast they are compared to a Pentium 4 processor.  First a little explanation is in order, AMD 64 and Athlon processors have more L1/L2 cache than comparable Pentium 4 processors in some cases but all AMD processors have faster data pathways and can process information more efficiently than a Pentium 4 processor.  So when for example when you see an AMD 64 4000+ running at 2.4GHz that does not mean a single thing as far as clock speed goes.  Intel is famous for milking the clock speed which is no longer the determinant when it comes to the performance of a processor.  Back to the AMD designations, the 4000+ (or any XXXX+) designation tells you that in this case with 4000+ it performs to the equivalent of a Pentium 4 running at 4GHz which Intel has been unable to produce, they top out at 3.8GHz.  So a 2700+ is the equivalent of a Pentium 4 at 2.7GHz, 3200+ is the equivalent of a Pentium 4 at 3.2GHz and so on.\n\nBut note that the lower end Sempron has the same designations of XXXX+ like a Sempron 3000+ but it is not being compared to a Pentium 4.  The Sempron 3000+ means it performs like an Intel Celeron clock at 3.0GHz.\n\nSo when you see the "+" designation on an Athlon it is being compared to a Pentium 4 and the "+" designation on a Sempron is being compared to a Celeron.\n\nIf you want a further explanation of why AMD processors can get by with slower clock speeds and still operate faster than Intel offerings, see these benchmarks over at Toms Hardware and note how all the AMD Athlon chips are at the top of the chart, http://www.tomshardware.com/2005/11/21/the_mother_of_all_cpu_charts_2005/page24.html
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More directly.\n\nhttp://www23.tomshardware.com/cpu.html\n\nTo save you some time I would say Athlons are for the most part are a better CPU. It is a much more efficent and effective CPU with low energy consumption/heat dissipation, high preformance per watt ratings, nativley desined for dual core and 64bit capacities, hypertransport bus technology. The pentium 4 has been a dog from conception, and the netburst technology from which its based is on its way out. Its in fact intel thats playing catch up with athlon.
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Assuming you could find a P4 running at that speed (the fastest P4 Intel released was 3.8 Ghz based on a Prescott core, with the next fastest being a 3.73 Ghz P4 Extreme Edition), the processor would be, in absolute terms, faster than that Pentium M, but it would be consuming radically more power to provide that computing capability.   Pentium M is much more power efficient than Pentium 4, as measured on a "performance per watt" basis, the new standard Intel is using for designing microprocessors.  Because of this new focus on performance based on power consumption, Intel is dropping the Pentium 4 core from future processor development, and all new Intel CPUs will be based on Pentium M technology.
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windows xp home and professional support hyper-threading. you need an intel pentium processor that supports it. celerons do not have it amd processors do not have it. and i believe the regular pentium d's (dual core) dont have it (the extreme editions do). u will know if u have hyper-threading by bringing up the task manager (alt ctrl del) and clicking the performance tab if your cpu graph is split then u have hyper-threading enabled (2 graphs per cpu or core)
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Pentium D is a Pentium 4 with two processor cores (instead of one) in a single CPU (chip).  If you run applications that take advantage of multiple processors, like high-end photo editing, video editing, and 3D rendering applications (like Maya and 3D Studio, not games), then the Pentium D will outperform the P4 as these applications will take advantage of the extra processor.\n\nHowever, for basic home and office applications or games, the D doesn't buy you much.  The only exception is if you run multiple applications at once with each one running demanding active tasks (like running a huge spreadsheet calculation while searching a massive database and running a web spider to automatically hunt and categorize web pages).
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it's not that confusing because\n- 1st and 2nd mentioned is the same\n- 3rd and 4th mentioned is also the same\n- the Turion 64 Mobile is the competitor of the Pentium M\n- another AMD 64 processor for notebooks is the AMD Mobile Athlon 64\nboth mentioned AMD 64 Mobile and the Pentium M are single core processors, while the Intel Core Duo is a dual core processor.\n\nConclusion: go for the Core Duo, this is the state of the art.
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I would certainly not go with a Pentium 4.  The best one out right now is the Intel Core Duo (Centrino Duo is the laptop version).  This along with 1-2 gigs of ram and 80+ gigs of hard drive space, and a video card 64megs of video ram should be good for the next few yeras.  If you wnat to save money, you can get about the same thing with a Pentium M processor, but I would certainly not use a pentium 4, he/she will get no battery life out of it.  they also are very hot, and aren't very fast at all.  the Pentium M and Duo even tho it has a lower clock rate (the gigahertz) they are much more efficient per clock cycle (they do more each time, rather then simply doing a little very fast).
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Pentium M is the CPU of the Intel Centrino (marketing) platform which includes the CPU, chipset, and wireless card. The design of the Pentium M CPU is based on the Pentium 3 architecture.\n\nPentium 4 Mobile is the older intel cpu/chipset which used the Pentium 4 chips. They are much slower than Pentium M CPUs, and are less energy efficient. They are no longer produced.
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Core 2 Duo is far superior.  The Pentium 4, though it does have the capability of hyperthreading, it is still just a single core 32 bit processor.  The Core two duo has two 64 bit processing engines, so it can process more instructions at one time.
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Speaking from architectural point of view Pentium III and Pentium 4 are entirely different creatures.  Pentium III core is based on the Pentium Pro core that was introduced many years ago.  Pentium III is the evolution of that core with added features like SSE and etc.\n\nPentium 4 however was a completely different core based on the NetBurst architecture.  The architecture was designed to assist higher clock speed through its longer stages of execution.  It's perfect for multimedia applications that are repetitive and require a lot of data to be pushed out in a repetitive manner.  The downside to this is that, it is less efficient than Pentium III processors because of the length of the stages Pentium 4 does less work per clock than Pentium III.  So a Pentium 4 at 2.8 Ghz may only be able to perform at the level of a Pentium III at 2.0 Ghz.\n\nIn an interesting move by Intel, the latest cores, Core2 based, are a return to the Pentium III philosophy of doing more per clock and complete abandonment of Pentium 4 core.  Core Duo and the Core Technology based on the Pentium M core developed by Intel's Israel Research center brought the focus back to efficiency in thermal heat and also instruction per clock back into vogue.\n\nPentium 4 is on its way out.  Now the chic thing to do is package multiple processor cores in 1 die and have multicore processors.  (It offers absolutely no performance advantage if the software is not able to use the additional cores.)\n\nFor multimedia, Pentium 4 is an impressive platform.  For general usage, Pentium III provides a better balance of performance.  In either case, they are both on their way out.