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Dumb Q? Quad core MP shows 8 cores in Activity Monitor

N

nickscale

macrumors newbie
Original poster
Just got a Mac Pro with a single 2.93 GHz Quad-Core Xeon (Nehalem) and it's all working fine, but I'm wondering why this 4-core machine shows 8 cores in Activity Monitor - 8 columns in both the floating CPU windows. 😕

I'm sure the answer's obvious, but it's late in the evening and I did search around the forum threads a little bit before posting... 🙄

Thanks dudes...
 
nickscale said:
Just got a Mac Pro with a single 2.93 GHz Quad-Core Xeon (Nehalem) and it's all working fine, but I'm wondering why this 4-core machine shows 8 cores in Activity Monitor - 8 columns in both the floating CPU windows. 😕

I'm sure the answer's obvious, but it's late in the evening and I did search around the forum threads a little bit before posting... 🙄

Thanks dudes...
Click to expand...

You're seeing the 2nd "virtual core" for each real core caused by the Hyperthreading stuff...

You have 4 REAL cores, each capable of 2 threads (or 1 real, 1 virtual "core")
 
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