Is Intel Atom n270 processor single or dual core?

From what we have review it the 1.6ghz singular core processor though in device physical education instructor underneath Processors (on MSI Wind u100) it says:
Intel(R) Atom(TM) CPU N270 @ 1.60GHz
Intel(R) Atom(TM) CPU N270 @ 1.60GHz

So we am the small confused as to how most cores it has.

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There are 2 suggestions to question “Is Intel Atom n270 processor single or dual core?”

Some of the Atoms have HyperThreading, which makes it appear similar to a Dual Core, but it’s not true Dual Core.
Produced 2008–present
Common manufacturer(s) Intel

Max. CPU clock 800 MHz to 1.866 GHz
FSB speeds Data transfers at 400 MHz to 667 MHz
Min. feature size 45nm
Instruction set x86, x86-64
Cores 1, 2
Package(s) 441-ball µFCBGA

Core name(s) Silverthorne
Diamondville

Dual core Diamondville
On September 22, 2008, Intel announced a new dual-core processor (unofficially code-named Dual Diamondville) branded Atom 330 of the Atom 300 series to be used in desktop computers. It runs at 1.6 GHz and has a 8 W TDP rating. Its dual core comprises two Diamondville dies next to each other on a single package (substrate).

The intel D945GCLF2 is a a mini-ITX board that contains the Atom 330.

Mobile Diamondville
On March 2, 2008, Intel announced a low-cost mobile processor (code-named Diamondville) to be used in the Classmate PC Netbook. It is used in Intel’s low-cost Mini-ITX motherboards (code-named “Little Falls”) and in a number of netbooks.[20][21][22][23] It will supersede Conroe L by using Diamondville as single core (N270: 2.5 W TDP) for laptop or dual core for desktop (330: 4 W TDP), running at 1.6 GHz per core.

Device Manager is fibbing it is capable of dual thread but it is a single core.