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19
votes
3answers
1k views

Why are newer generations of processors faster at the same clock speed?

Why, for example, would a 2.66 GHz dual-core Core i5 be faster than a 2.66 GHz Core 2 Duo, which is also dual-core? Is this because of newer instructions that can process information in fewer clock ...
19
votes
8answers
42k views

How do I calculate clock speed in multi-core processors?

Is it correct to say, for example, that a processor with four cores each running at 3GHz is in fact a processor running at 12GHz? I once got into a "Mac vs. PC" argument (which by the way is NOT the ...
2
votes
4answers
4k views

Multi-core CPU: can I say I have a 3x2.1GHz=6.3GHz CPU?

I have an AMD A6-3500 three-core CPU. AMD System Monitor shows each core with a maximum 2100 MHz. This also shows in AMD OverDrive. Does this processor run at the speed 3*2100 MHz? Edit Can I say ...
2
votes
5answers
3k views

Whats the deal with these new lower clock speed CPUs on Laptops? Can they still run apps well?

I'm looking at some new laptops, and I'm seeing the AMD Neo CPUs at 1.5GHz, and some of the new Intels at 1.3-1.8GHz. The laptops they are on come well supplied in terms of RAM (up to 8GB) and Video ...
55
votes
9answers
11k views

Why have CPU manufacturers stopped increasing the clock speeds of their processors? [closed]

I have read that manufacturers stopped concentrating on higher clock speeds and are now working on other things to improve performance. With an old Desktop machine with Intel® Xeon® Processor E3110 ...
3
votes
1answer
180 views

Which property of CPUs is good for what?

Back in the days clock frequency used to be THE criteria to compare CPUs (or perhaps you had to take into account whether it was a DX or SX). The world was simple back then, but in these fast evolving ...
9
votes
0answers
337 views

Why did CPU clock speeds stop increasing? [duplicate]

Possible Duplicate: Has CPU speed already broken Moore's law? Additional Reading: Whats the deal with these new lower clock speed CPUs on Laptops? Can they still run apps well? Is a ...
5
votes
2answers
8k views

How does Intel Turbo Boost work?

I just got a new Intel CPU, and the specifications say 3.5GHz but with turbo boost to 3.9GHz. What does Intel Turbo Boost do? From the description it sounds like they are saying "The road's speed ...
1
vote
3answers
372 views

An absolute unit to indicate CPU speed?

Most advanced computer users know that you can't compare CPU speed by just comparing the clock speed, but that other factors are involved (only one of which is multicore, but that's easy to ...