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dual core dilemma





technology.sponge
when the cpu makers intel and amd sy there procesors r dual core, what exactly do they mean?

ie, does a intel 3.0ghz dual core hav

1)2 x 1.5ghz cores inside
2)2 x 3.0ghz cores inside

is it the same for amd as well?
nam_siddharth
technology.sponge wrote:
when the cpu makers intel and amd sy there procesors r dual core, what exactly do they mean?

ie, does a intel 3.0ghz dual core hav

1)2 x 1.5ghz cores inside
2)2 x 3.0ghz cores inside

is it the same for amd as well?


Intet 3.0 GHz. dual core Proccessor have 2 x 1.5GHz Proccessor inside.
technology.sponge
is it the same for AMD though?
some of the dual core amd's run a 2.2ghz which is a bit low even if u take into accoutn the faster fsb and more cache
djclue917
nam_siddharth wrote:
Intet 3.0 GHz. dual core Proccessor have 2 x 1.5GHz Proccessor inside.


It's not like that you know... 3.0 GHz dual-core processors have 2 processing cores clocked at 3.0 GHz each. However, that doesn't mean that the dual-core processor, as a whole, is running at 6.0 GHz.
AlexNet
they both run at 3 ghz, they are both running processing threads, but they are still only running at 3 ghz each, so it is not nessesarily all that faster, but It can be very very efficient, because if one core is loaded with processes, the other core takes some of the load. But you wont see a giant leap in speed, just that things run a lot smoother.
ocalhoun
It's just dual-cpu emulation. It demonstrates the difference between power and speed.
Normal 3Ghz cpu: 1.5 Gflops (billion floating operations per second)
Dual-core 3Ghz cpu: 3 Gflops
Linux cluster with 6 computers at 3Ghz: 9Gflops

(I'm basing this on one operation taking two cpu cycles) It's only really usefull if you need a lot of raw power, and you have well parelelized code.
waiteck
lemme tell you..

1 processor can run 1 process at a time..
2 processors can run 2 processes at a time..

So with dual core 3.0Ghz means that there are two processors running at 3.0Ghz.. And it will be twice faster.. than an ordinary 3.0Ghz Single Core.. But this doesn't mean that the whole thing is 6.0Ghz
djclue917
waiteck wrote:
lemme tell you..

1 processor can run 1 process at a time..
2 processors can run 2 processes at a time..

So with dual core 3.0Ghz means that there are two processors running at 3.0Ghz.. And it will be twice faster.. than an ordinary 3.0Ghz Single Core.. But this doesn't mean that the whole thing is 6.0Ghz


A dual-core CPU doesn't necessarily mean that it will be twice as fast than a single-core CPU with the same clock rate. It depends on which applications you use. If a software, like Adobe Photoshop for example, is designed in such a way that it will take advantage of multi-core CPUs or even multiple CPUs, then it will of course perform better on a dual-core CPU. That is, the software uses multiple threads and not just one.

However, the performace gain doesn't necessarily reach 100%. That is, a dual-core CPU isn't necessarily twice as fast as a single-core CPU of the same clock rate. It really depends on how a particular software or Operating System is designed.
Indyan
technology.sponge wrote:
is it the same for AMD though?
some of the dual core amd's run a 2.2ghz which is a bit low even if u take into accoutn the faster fsb and more cache

Gigahertz doesnt matter a bit.
Like i have amd athlon 63 3000+. it is clocked at 2ghz. It did better than intel 3ghz ( the ones released at the time i bought the processor i.e. before intel chose to change its naming system).
One proof is that now intel also doesnt name its processor based on clock speed like 3ghz processor etc.
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