Every mac i've owned since I started using Activity Monitor showed each of the four cores that were active and what level they were at.
My iMac 3.4 GHz Intel Core i7 shows what appears to be a single core. My benchmarks are within normal parameters...
What's going on here?
Thanks.
iMac, Mac OS X (10.7.4)
If this is your Mac, does any of this information help?
Thank you very much for replying. That is my Mac, but it still does not clarify the conundrum of why only one processor shows instead of all four.
All my previous computers have shown both cores or four cores or two or whatever in Activity Monitor.
Thanks again though.
I have a quad core 2.93 GHz i7 iMac, but do not see anything in Activity Monitor concerning one or more cores - can you send a screenshot of which window you are looking at and where the one processor is shown (and where the others should be shown)? I may be way off, but as far as I know, there is only one processor. Here is the info at the bottom of mine (top are processes):
What were your other computers?
Try opening the pull down menu under Windows in Activity Monitor and then open CPU History.
On my Mac that all 24 cores which includes the 12 actual cores and the 12 virtual cores.
Allan
If you right click on the Activity Monitor icon, you get a bunch of options, including 'show CPU usage' which then displays differently in the dock (picture included). I've included what mine looks like on the iMac (the single bar) versus my macbook air, which has four.
Macbook:
iMac
If I do that for CPU history, I just get this:
I just want the dock icon to show the cores, so I can see if one is being particularly taxed or all of them....
It's normal.
From OS X: Activity Monitor shows one CPU Usage graph on systems with more than four cores
In Activity Monitor, the CPU Usage and history show a separate graph for each core if the Mac has four processor cores or less, but a single graph if there are more than four cores.
Your i7 has four cores plus another four "virtual cores". Activity Monitor considers that "more than four cores".
Here is what I see
Ha, learned something new - had no idea that option existed - thanks! Sorry your concern hasn't been answered though.....
This is very usefull! I have noticed that this behavior also applies to a 'MacBook pro retina'.
When calling apple support it took them a while and some perseverance on my end before they related this article to the MBPr, which also has an i7 'hyperthreaded' CPU.
Thank you,
Emiel
You're welcome.
When calling apple support it took them a while and some perseverance on my end before they related this article to the MBPr, which also has an i7 'hyperthreaded' CPU.
Now you know where to go for answers 🙂
Why does my new 3.4 GHz Intel Core i7 show a single core when activity monitor is open?
