Intel Dual Core Question

[PCTech]

http://www.tigerdirect.com/applicati...?EdpNo=1477435


That is a 2.8Ghz, Intel Dual Core Pentium D Chip, and it has 64 Extensions. Now my question is this, is that TWO 2.8 Ghz CPUs or is it 1.4Ghz @ 2 processors for a total of 2.8Ghz? If its 2.8Ghz for each core then I think 255 or so is pretty good! Now I know they can do multiple things at once because its a dual core, but if they are only doing one thing do they accomplish the task together? Like for instances if I need only 1 core do process the data will they both do it at twice the speed? Help me, i'm behind the times with dual cores and 64bit!

[Dudelive]

Check out this below, also look at the two demos at the right. See if that explains some of this

Code:

http://www.intel.com/personal/desktop/pentium_d/

Thanks
Dudelive

[PCTech]

Alright, that helped, but sinse it 2 execution cores, I dont guess they both can do they same task to "help" each other out? Also do they both operate at say 2.8Ghz, or is 2.8Ghz the TOTAL clock speed? If its the total clock speed wouldn't that mean that both cores operate @ 1.4ghz?