Super User is a question and answer site for computer enthusiasts and power users. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

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
up vote 13 down vote accepted

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

share|improve this answer
    
+1 for the link. – Not Kyle stop stalking me 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

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

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

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .