Intel processor - Qual core, core 2 duo, core 2 quad information

Cores/threads

Cores and threads go hand in hand. Multi-core processors are single chips that contain two or more distinct processors or execution cores in the same integrated circuit. Multi-threading allows each core to work on two tasks at once, thereby letting you do more things simultaneously, producing faster, more efficient results. Now your computer can keep up with even your heaviest multitasking.


As per this understanding, Core 2 Duo will have dual processor with capabale of running 2 X 2 threads
Dual core processor will have dual processor with capable of running 1 X 2 threads
 
Intel® Smart Cache
Cache is a fast storage area where the processor places frequently accessed data. Smart Cache is Intel’s performance-maximized data storage. It allows each processor core to dynamically utilize up to 100% of available cache and obtain data from the cache at higher throughput rates. By keeping more data closer to the processor for fast execution, overall performance is improved. This is of particular benefit when running rich media titles and games, as well as everyday productivity applications.


Intel Tubo Boost Technology
Available on select models of the all new 2010 Intel® Core™ processor family, Intel® Turbo Boost Technology dynamically redirects power and accelerates performance to match your workload. Previously, unused portions of the chip would be “turned off,” leaving some cores idle. Intel® Turbo Boost Technology reroutes that unused performance to the cores that are active, boosting their performance without wasting power. As a result, you automatically get extra performance whenever you need it, and increased energy efficiency when you don’t.

Intel® Hyper-Threading Technology
Available on all new 2010 Intel® Core™ processor family, Intel® Hyper-Threading Technology delivers more efficient use of processor resources and improved performance on multithreaded software. This allows you to run demanding desktop applications simultaneously while maintaining system responsiveness. For example, Intel® Hyper-Threading Technology helps multimedia enthusiasts create, edit and encode graphically intensive files while running background applications, such as virus protection software, without compromise to performance.

http://www.intel.com/technology/product/demos/multi/demo.htm?iid=tech_multi-core+body_demo

Running applications simultaneously which are of nature:
-- Multiple threaded applications
-- Multiple applications

Intels HT technology enables two threads to be processed in a single processor, allowing parallel partial execution. Ex. thread1 and thead2 are processed in a single processor simultaneously and output are provided simultaneously. This requries HT enabled chipset.

Dual core processors enable two threads to be fully processed in parallel in their own processor cores. Similarly Quad core allows four threads to be processed in parallel simultaneously.

HT on multicore processors allows twice as many threads to be processed in parallel.