Intel Duo core 2

please help me know whether intel duo core 2 processor
contains 2 seperate executing processor cores on one die
or
it contains 2 seperate cache memory connected to single
executing unit

http://www.intel.com/

Much technical information there.

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"Gurpreet Singh" <> wrote in message
news:0DF87F17-C812-42A7-896E-...
> please help me know whether intel duo core 2 processor
> contains 2 seperate executing processor cores on one die
> or
> it contains 2 seperate cache memory connected to single
> executing unit

"Gurpreet Singh" <> wrote in message
news:0DF87F17-C812-42A7-896E-...
> please help me know whether intel duo core 2 processor
> contains 2 seperate executing processor cores on one die
> or
> it contains 2 seperate cache memory connected to single
> executing unit


It contains two separate processing cores with a shared cache, which allows
each core to access the whole cache (so better than two separate caches,
like on current Core Quads, which are just two Duos kludged together).

ss.

if these cores share same cache
then isn't the 2 cache system will provide better performance than single.
also
if i have 2 cores system e.g 1.7Ghz Duo core processor
then it means i have 1.7x2 Ghz processors running parallel. Is this same as
parallel computing systems?


"Gurpreet Singh" <> wrote in message
news:0DF87F17-C812-42A7-896E-...
> please help me know whether intel duo core 2 processor
> contains 2 seperate executing processor cores on one die
> or
> it contains 2 seperate cache memory connected to single
> executing unit

Two cores - one die.

"Gurpreet Singh" <> wrote in message
news:0DF87F17-C812-42A7-896E-...
> please help me know whether intel duo core 2 processor
> contains 2 seperate executing processor cores on one die
> or
> it contains 2 seperate cache memory connected to single
> executing unit

"Gurpreet Singh" <> wrote in message
news:ED61874A-A739-4DB3-961F-...
> if these cores share same cache
> then isn't the 2 cache system will provide better performance than single.

No. If each core can access 4MB of shared cache, then if one core is not
busy, the other one can make use of the whole cache. Also, if both cores
want the same data from the cache, there is no need to duplicate it, as each
core can access the same memory data.

Two cores with with one shared cache of 4MB is a lot better than two cores
with 2MB each.

> also
> if i have 2 cores system e.g 1.7Ghz Duo core processor
> then it means i have 1.7x2 Ghz processors running parallel. Is this same
> as
> parallel computing systems?

Yes, in a very limited way, that will increase on desktop computers as time
goes on. That term is usually used on supercomputers with upto hundreds of
processors.

Software is not written to be multi-threaded very often, as far as I know,
so a this time multi-core processors are being used to multitask more than
anything else.

ss.