Why does a dual core board show four processors?

Asked by richard on 2010-01-23

I have a Intel D945GCLF2 loaded with Ubuntu 9.10 all all working fine but the System Monitor in CPU History is showing four CPU's 1-4. All show working.

Question information

Language:
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Status:
Solved
For:
Ubuntu gnome-system-monitor Edit question
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Solved by:
David Tomaschik
Solved:
2010-01-24
Last query:
2010-01-24
Last reply:
2010-01-24

can you give the output of:

cat /proc/cpuinfo

Cheers

Best David Tomaschik (matir) said : #2

Atom 330 processors are dual-core processors that also support HyperThreading (Simultaneous Multi-Threading) technology. This allows the execution of 4 simultaneous threads, with 4 contexts. This is represented by the system as 4 virtual CPUs.

richard (richard-hakes) said : #3

Thanks David Tomaschik, that solved my question.

richard (richard-hakes) said : #4

Just been reading up on Hyper-Threading Technology and now I know the answer it is pretty logical. Only had the machine a couple of days but it does seem to work well. The new Intel D510MO looks like it should be even better, slightly faster processor and better graphics and no fan, all for the same price.