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Difference between Intel processors?
Intel nominclature is very difficult to understand.
I wish to Upgrade my computer. Currently I have 3.0 Ghz Pentium Computer. Latest Computers are as follows. 1. Dual Core 2. Core 2 Duo 3. Quad Core 4. Core2 Quad. What does this "Core 2" means. And I find new processors at 2.5 GHz then how they will be faster than my 3.0 Ghz computer. I am waiting for 6 Ghz, 12 Ghz computers but Intel is not increasing the frequency. Does adding 2/ 4 cores speed up it by a factor of 2 or 4? Bye Sanny |
#3
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Difference between Intel processors?
On Sep 7, 7:23*pm, (John Dallman) wrote:
In article , (Sanny) wrote: Intel nominclature is very difficult to understand. If you don't track it as it develops, it certainly is. Currently I have 3.0 Ghz Pentium Computer. No, you have a 3.0 GHz Pentium 4 computer. Pentium, Pentium II, Pentium III, and Pentium 4 are all separate models of processor, at least at a marketing level, and mostly so internally too. For an analogy, they're about as different as the Boeing aircraft 707, 727, 737 and 747. Latest Computers are as follows. 1. Dual Core 2. Core 2 Duo 3. Quad Core 4. Core2 Quad. What does this "Core 2" means. There are several concepts tangled together here. Your Pentium 4 has a single processor "core". The successor "Pentium D" had two cores, on the same chip. This gave much the same effect as having two separate processors in separate sockets, but was cheaper to manufacture. So a "dual core" has two processor cores in one package, and a "quad core" has four processor cores in one package. "Core 2" is a new brand name. It has replaced "Pentium" as Intel's main brand name for their processors. So a "Core 2 Duo" is a dual-core processor of the current brand, and a "Core 2 Quad" is a quad-core processor of the current brand. And I find new processors at 2.5 GHz then how they will be faster than my 3.0 Ghz computer. You know how when you bought that machine and for several years previously Intel were saying that clockspeed was the thing that mattered? Well, that was "marketing", otherwise known as describing things in the most favourable way possible for intel without actually lying. And that's definitely using a salesman's definition of what constitutes lying. Clockspeed is only one of the things that affects the actual amount of work a processor can do. For another example, think of a car engine. You can make a small-capacity one that develops, say, 100 horsepower at high RPM. Or you can make a larger-capacity one that develops the same horsepower at a lower RPM. The Pentium 4 is like the former; the Core 2 is like the latter. Clockspeed is like RPM; actual computing power is like horsepower. Intel switched strategies for reasons that form the answer to your next question. I am waiting for 6 Ghz, 12 Ghz computers but Intel is not increasing the frequency. You will wait a very long time indeed. Decades, I reckon. Intel did indeed plan to produce Pentium 4 successors at those clock speeds. Unfortunately, the laws of physics turned out not to be cooperating with the idea. At around 4GHz in the lab, they found that the processors just consumed a whole lot more power, got much hotter, and didn't actually run any faster. The fastest Pentium 4s they ever sold were about 3.8GHz and those are no longer available. A single core of a 2.5GHz Core 2 Duo can do between one-and-a-half and twice as much work as a 2.5GHz Pentium 4. The speed-up depends on what kind of code you are running and what kind of processor it was compiled for. The idea of a simple "processor speed" was only every a simplification for sales purposes. The enhanced "Penryn" version can do about 10% more work per GHz, and the forthcoming "Nelahem" are supposed to be more capable yet. So you could say that effective clock speeds on the Pentium 4 clock scale are past 5GHz and still increasing. However, the rate of increase is much slower than it was in the days of the Pentium III and early Pentium 4. No, nobody likes this. Unfortunately there isn't much to be done about it. The amount of money to be made from overcoming is vast, and the chip manufacturers are trying their best, but they are only making slow progress. Does adding 2/ 4 cores speed up it by a factor of 2 or 4? No. It means you can run more programs at once without them slowing it down. If the software you want to run fast has been written or re-written to use multiple processors in some way, you will get some speed-up from that, but it is very rare for it to be as big as x2 or x4. Computers are no longer increasing in useful power as fast as they used to. You'll have get used to it, unless you have some utterly radical, yet practical, engineering ideas, or have the power to alter the laws of physics. -- John Dallman * * * * * * * * * * * * * * * * * * * * * * * * * "C++ - the FORTRAN of the early 21st century." Thanks for your good Suggestion and analysing various processors. Bye Sanny |
#4
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Difference between Intel processors?
Sanny wrote:
Intel nominclature is very difficult to understand. I wish to Upgrade my computer. Currently I have 3.0 Ghz Pentium Computer. Latest Computers are as follows. 1. Dual Core 2. Core 2 Duo 3. Quad Core 4. Core2 Quad. What does this "Core 2" means. There used to be the original Pentium, then Pentium II, Pentium III, and then Pentium 4. Then Intel came up with a new brand name called "Core", which replaces Pentium as their top-end processor. And just like there were several evolutions to Pentium from the original to Pentium 4, there has now been two evolutions of Core already, from original to Core 2. Actually Intel is getting ready to go to the next generation of Core, which it will call Core i7 rather than Core 3 for some reason. Also Core comes with a number of different cores. Core 2 Solo came with one core, Core 2 Duo came with two cores, Core 2 Quad came with four cores, etc. And I find new processors at 2.5 GHz then how they will be faster than my 3.0 Ghz computer. They are more efficient than the old Pentium processors. They can do more work per Mhz than your Pentium. Think of it like they have longer legs than a Pentium. A short-legged Pentium moving its legs really quickly may not be able to keep up with long-legged Core moving its legs less quickly. I am waiting for 6 Ghz, 12 Ghz computers but Intel is not increasing the frequency. They may not come for at least a decade from now. The more you increase the Mhz, the more energy it burns up. Instead they are trying to make the processors more efficient, and well as double them up with more cores, etc. Does adding 2/ 4 cores speed up it by a factor of 2 or 4? No, usually you'll be lucky to get 50% speed up. However, having more cores does mean that you can split your programs up among different cores simultaneously. So it's better for multitasking many programs, rather than simply making one program much faster. Yousuf Khan |
#5
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We can easily differentiate what are the different Intel Processors, each and every new one is having heavy configuration.
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