Are people trying to overclock quad core iMac?

53x12

macrumors 68000
Original poster
Feb 16, 2009
1,544
4


I was looking on GeekBench and noticed there are quite a few quad core iMac that are running faster than the 2.66GHz of the i5 and the 2.8GHz of the i7. I can't make sense if people really are trying to overclock or just somehow are making Geekbench think they have a faster CPU/are editing their scores somehow. How in the world could one overclock the iMac when cooling is a serious concern?
 

waitingonnov

macrumors member
Nov 6, 2009
31
0
I would assume that is the turbo function....
The cpu overclocks itself




I was looking on GeekBench and noticed there are quite a few quad core iMac that are running faster than the 2.66GHz of the i5 and the 2.8GHz of the i7. I can't make sense if people really are trying to overclock or just somehow are making Geekbench think they have a faster CPU/are editing their scores somehow. How in the world could one overclock the iMac when cooling is a serious concern?
 

burningrave101

macrumors 6502
Mar 4, 2008
384
0
iMacs are not overclockable because there is no system BIOS to enter that allows the changing of the system clock speed. What you're seeing is either Turbo mode or a different quad core system they're comparing the 2.66Ghz and 2.8Ghz iMacs to.
 

53x12

macrumors 68000
Original poster
Feb 16, 2009
1,544
4
iMacs are not overclockable because there is no system BIOS to enter that allows the changing of the system clock speed. What you're seeing is either Turbo mode or a different quad core system they're comparing the 2.66Ghz and 2.8Ghz iMacs to.
Right, the turbo boost goes up to 3.46GHz for the i7 and i5 goes up to 3.2GHz. I was just curious where these numbers above 3.46GHz are coming from. But I think you answered that in that they are using a different quad core system, however under the description it says it is an iMac with the i7-860 with the stock Apple motherboard.
 

burningrave101

macrumors 6502
Mar 4, 2008
384
0
Right, the turbo boost goes up to 3.46GHz for the i7 and i5 goes up to 3.2GHz. I was just curious where these numbers above 3.46GHz are coming from. But I think you answered that in that they are using a different quad core system, however under the description it says it is an iMac with the i7-860 with the stock Apple motherboard.
I wouldn't be surprised if they have a quad core Mac Pro thrown in the mix of benchmarks there.
 

53x12

macrumors 68000
Original poster
Feb 16, 2009
1,544
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300D

macrumors 65816
May 2, 2009
1,284
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Tulsa
Its been shown there are a couple of PC systems masquerading as an iMac in the geekbench system profile.
 
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