Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Why do all the Windows 7 Desktop Gadgets tell me my 4 core processor has 8 cores? I have an Intel i7 870 with 4 cores. Yet every gadget I try tells me I have 8. Whats up?

Thanks

share|improve this question

4 Answers 4

up vote 12 down vote accepted

Your processor has HyperThreading, giving it two virtual/logical cores per physical core.

share|improve this answer
    
+1 for the link. –  Kyle Jan 20 '11 at 21:58
1  
3 answers less than 32 seconds apart, has to be a record. –  Moab Jan 20 '11 at 22:07

This is most probably because the i7 870 has hyperthreading (~2 hardware threads by core), my Core i5 760 shows only 4. For each processor core that is physically present, the operating system addresses two virtual processors

share|improve this answer

Looks like the applications are detecting what is called Hyperthreading. This feature effectively allows a single core to behave as two cores. See the wikipedia article if you want to know more. http://en.wikipedia.org/wiki/Hyper-threading

share|improve this answer

Sounds like your processor is hyper threaded which means each core will have two threads, Windows will see these threads (logical cores) as additional cores.

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.