What is the difference?

[terrencekpeiris]

Could you please tell me what is the difference between
core 2 duo, dual core and quad core

 

[terrencekpeiris]

kawruth naddooooooooooooooo?

 

[nishan2007]

machan "Dual-core" is a generic term for any CPU that has two cores on the same physical die (uses one socket). They behave much like the classic systems with two separate CPUs, except that they share the same cache, making them (slightly) less powerful.

Core 2 Duos are a brand name of dual-core processors from Intel.

"Quad-core" is a generic term for a processor with 4 cores on the same die.

Core 2 Quads are a brand name of quad-core processors from Intel.

Quad-core processors are arguably more powerful, depending on how well the programs can take advantage of the cores. They tend to run hotter than dual-core processors.

 

[nishan2007]

In srilanka most of da vendors sold the pentium D processor as a dual core processor but which is not true and core 2 duo is the intel brand name of dual cores

 

[sudheera]

no idea

 

[fallenzeraphine]

They behave much like the classic systems with two separate CPUs, except that they share the same cache, making them (slightly) less powerful.

Except for the quoted part Nishan is correct...Processors with multiple cores on the same Package or on the same die are actually faster than the normal SMP systems withe multiple Processors, because of the Interconnects on multi core processors (interconnects links one core to the other making them work simultaniousely) are working at processor speed (on true Quad or Dual core processors) or very close to processor speed(on older intel pentium D processors and Core 2 quad processors), and also the Physical distance between each processor core is extremely small and this is one of the major reasons multi core processors are faster (when the physical distance increase the Resistance and magnetic intefearance increase thus reducing the speed)....shared cache has its benefits and drawbacks...for instance shared cache allows each processor core to address recently accessed data more quickly than separate cache models (Intel Core 2 use the shared cache method and AMD Athlon X2 used separate cache and AMD Phenom use separate L2 Cache and a Shared L3 cahce) all in all a dual core (or quad) CPU is faster than a system with two Processors (or four).

 

[shiwankaswe]

simply -
core 2 have 4 processors
dual core has 2 processors

 

[Clerk_Kent]

In srilanka most of da vendors sold the pentium D processor as a dual core processor but which is not true and core 2 duo is the intel brand name of dual cores

Pentium D is the Dual core prose. bro.....
Later Intel developed more efficient pro.. & it is called core 2 pro...
That's the different between Pentium D & core 2.....

 

[terrencekpeiris]

machan "Dual-core" is a generic term for any CPU that has two cores on the same physical die (uses one socket). They behave much like the classic systems with two separate CPUs, except that they share the same cache, making them (slightly) less powerful.

Core 2 Duos are a brand name of dual-core processors from Intel.

"Quad-core" is a generic term for a processor with 4 cores on the same die.

Core 2 Quads are a brand name of quad-core processors from Intel.

Quad-core processors are arguably more powerful, depending on how well the programs can take advantage of the cores. They tend to run hotter than dual-core processors.

Thanks alot for the infomation brother!

 

[terrencekpeiris]

Thanks all!!!!!!!!!!!!!

 

[sri_lion]

Horenma ganna neda hadanne PC ekak.. apitath nokia!

 

[wjlfernando]

thnkz for all

 

[ywicky]

No idea but I hv a core 2 duo processor!

 

[tharuksha123]

mmmmm
no idea

 

[chanster]

Ill try to make this as simple as possible......

If you know how a processing cycle works....A Pentium D can process only 1 piece os data in 1 cycle......An core 2 can process 4 pieces of data in one cycle ....So even if the core 2 has less" Mhz" than the Pentium D overall the core 2 is doing more work than the pentium D...Ever wondered why a 1.8 core 2 is better than a 3.4 D? well this is how is works......
The core 2's cache is also different...The Pentium D has 2 independent cache memories....these 2 cores cant communicate with each other...where as the core 2's 2 cores has a shared cache,ITs 2 cores can communicate with each other......so the program doesn't have to be written for a dual core.....if there is a process which needs lots of processing power, the core will automatically utilize both cores.......where the pentium D cant.......

Core 2 Quad is a Processor with 4 cores/2 shared cache memories....uses the same technology as Core 2....

 

[fallenzeraphine]

these 2 cores cant communicate with each other...where as the core 2's 2 cores has a shared cache,ITs 2 cores can communicate with each other......so the program doesn't have to be written for a dual core.....if there is a process which needs lots of processing power, the core will automatically utilize both cores.......where the pentium D cant

Ur wrong about this...a program must be Written Specificaly to use Multi threading to Utilize all the cores of a CPU (or on a SMP system multiple cpu's) a processor cant automaticaly utilize all its cores for programs that arnt Multi threading..and u have confused Cache memory with Internel core interconnects....processor cores can communicate with eachother even if they have shared cache or individual cache...(cache memory has nothing to do with it) u might want to read this article
lol http://en.wikipedia.org/wiki/Cache_memory . CPU cache only acts as a extremely fast buffer for storing data from the most frequently used main Memory locations..it has nothing to do with communication between the cores..cores communicate through a high speed interconnect
Read this article for more info http://en.wikipedia.org/wiki/Multi-core

 

[chanster]

Sorry my Bad.........
Two completely different architectures. Core 2's spank the PentDs and the Netburst archi every which way and then some. On top of that, the shared L2 means that the same data isn't written or processed twice on 2 different cores.

Basically Intel was tired of being AMD's ***** so they followed suit and decided that even though they could make a 4GHz stock Pentium D it would still get owned by most X2s so they designed Core 2 to be more efficient rather than faster, and the result is a complete reversal of the market, whereas before a 2GHz AMD processor was comparable to a 3GHz Intel processor, now a 2GHz Intel processor is comparable to a 3GHz AMD processor.

 

[sudheera]

hmmm

 

[Dan01]

Core 2 Duos are a brand name of dual-core processors from Intel.

u r wrong bro.

core 2 is more powerful than dual-core
quard core is more powerful than core 2

if u wont to get new one try to buy intel Extreme edition processor.

 

[gayannr]

Ill try to make this as simple as possible......

If you know how a processing cycle works....A Pentium D can process only 1 piece os data in 1 cycle......An core 2 can process 4 pieces of data in one cycle ....So even if the core 2 has less" Mhz" than the Pentium D overall the core 2 is doing more work than the pentium D...Ever wondered why a 1.8 core 2 is better than a 3.4 D? well this is how is works......
The core 2's cache is also different...The Pentium D has 2 independent cache memories....these 2 cores cant communicate with each other...where as the core 2's 2 cores has a shared cache,ITs 2 cores can communicate with each other......so the program doesn't have to be written for a dual core.....if there is a process which needs lots of processing power, the core will automatically utilize both cores.......where the pentium D cant.......

Core 2 Quad is a Processor with 4 cores/2 shared cache memories....uses the same technology as Core 2....

AFAIK PD's IPC is between 1 and 3,can't remember the exact number,but not exactly 1