2.7GHz and 3.1GHz?

[Apple2000]

Is the same i5-2400 chip used in each 27" iMac? Or does apple get an OEM chip of sorts that runs at a lower speed.

It seems kind of counterproductive to purposely bottleneck a computer.

 

[MrCheeto]

The current 27" iMac offers the intel 3.1ghz Core i5 (2400). It's the same as all other intel 3.1ghz Core i5 (2400)'s.

 

[Apple2000]

The current 27" iMac offers the intel 3.1ghz Core i5 (2400). It's the same as all other intel 3.1ghz Core i5 (2400)'s.

So the $1699 model is also the i5-2400? Is there a way to over clock it to run at 3.1GHz as its obviously capable?

 

[MrCheeto]

I believe there is some kind of confusion.

2400 = 3.1ghz with a turbo mode up to 3.4ghz
2500S = 2.7ghz with a turbo mode up to 3.7ghz

There are a handful of over-clocking utilities for Macs.

 

[lamboman]

Note that due to the increase in Turbo speed, the lower end processor will actually be quicker for single-threaded applications. Just in case you are looking at buying a new system

 

[bottleneck]

Is the same i5-2400 chip used in each 27" iMac?

Have a look at the "Apple 2011 iMac CPU Comparison" chart on page no.2

http://www.anandtech.com/show/4340/27inch-apple-imac-review-2011/2

The Intel Core i5-2500S 2.70 GHz needs less thermal design power (TDP) than the Intel Core i5-2400 3.10 GHz.

Regarding the overclockingability of the Intel Core i5-2400 3.10 GHz: http://www.channelpro.co.uk/reviews/6511/intel-sandy-bridge-review/page/0/13