The Intel Core i3, model 2120 Microprocessor is based on the Nehalem micro-architecture,http://en.wikipedia.org/wiki/Nehalem_%28microarchitecture%29
In the old days you had Intel Pentium 4's, that had Hyperthreading Technology. HT.
One REAL processor core operating, and one VIRTUAL processor core.
The Processor teamed up on the task at hand, using TWO processor cores.
Yes, you guessed it. TWO processors.
One REAL, one VIRTUAL.
The Nehalem micro-architecture brought HT back out.
Then the Sandy Bridge micro-architecture came out. Came out to replace the Nehalem micro-architecture,http://en.wikipedia.org/wiki/Sandy_Bridge
The Intel Core i3 2120 is based on the 32nm Sandy Bridge, micro-architecture.http://en.wikipedia.org/wiki/Sandy_Bridge#Desktop_platform
Now instead of having TWO processor cores, you can have FOUR with two REAL ones, and two VIRTUAL ones.
FOUR processors is what is essentially being said here.
TWO real ones, TWO virtual ones.
HOWEVER, your load that you are doing;...............
Business/Office application, or program...
Is not enough to use FOUR processor cores. So HT is not enabled at this time.
An aggressive, intensive new game, will click HT on; but who am I to know?
Program that you have multiple applications within it opened?
Running four or more programs?
Running two games at once?
Editing the lunar space program? lol!
Maybe THESE will kick HT on, dunno.
For additional questions please post in a Comment.
[Having HT with a processor that has TWO processor cores; is like having an alcohol burning dragster processor.
You don't use it to go to the supermarket ]
[Oh, and by the way;
NO, Intel Core i3 does NOT mean 3 processor cores.
There are TWO.
Having two processor cores on ONE die chip; means there are TWO processors.
TWO processors contained in that one processor.
HT is kicked on you have FOUR processors ]http://www.hardwaresecrets.com/article/535http://www.hardwaresecrets.com/article/Inside-the-Intel-Sandy-Bridge-Microarchitecture/1161http://www.hardwaresecrets.com/article/All-Core-i3-Models/951
[Yours is a 21xx Model ]