220-801 · Question #164
Ann, a technician, is inspecting a PC with an Intel Core 2 Quad processor and finds that the Task Manager is reporting the system as having 8 cores. She is convinced this system only has four cores…
The correct answer is A. Hyperthreading. Hyperthreading (Intel's implementation of Simultaneous Multi-Threading, or SMT) allows each physical CPU core to present itself to the operating system as two logical cores. A quad-core processor with Hyperthreading enabled will show 8 logical processors in Task Manager (4…
Question
Ann, a technician, is inspecting a PC with an Intel Core 2 Quad processor and finds that the Task Manager is reporting the system as having 8 cores. She is convinced this system only has four cores. Which of the following technologies is causing the discrepancy?
Options
- AHyperthreading
- BIntel SSE3
- CL2 Cache
- DS.M.A.R.T.
How the community answered
(37 responses)- A73% (27)
- B8% (3)
- C16% (6)
- D3% (1)
Explanation
Hyperthreading (Intel's implementation of Simultaneous Multi-Threading, or SMT) allows each physical CPU core to present itself to the operating system as two logical cores. A quad-core processor with Hyperthreading enabled will show 8 logical processors in Task Manager (4 physical cores × 2 logical threads each = 8). This explains the discrepancy Ann is seeing. Intel SSE3 is a SIMD instruction set extension, L2 Cache is a memory cache layer, and S.M.A.R.T. is a hard drive health monitoring technology - none of these affect core count reporting.
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