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iMac 2.8 ghz vs. 3.4 ghz Processor for Video Editing

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October 13, 2013 6:32:20 PM


I am in the market for an iMac that I will use primarily for video editing. I came across two different preowned models...


2010 27" 2.8 GHZ Intel Core i7
8GB 1067MHz DDR3 RAM
ATI Radeon HD 5750 MB
$1100

2011 27" 3.4 GHZ Intel Core i7
8GB 1333MHz DDR3 RAM
AMD Radeon HD 6970M 2048 MB
$1500


Is there that large of a difference in the 3.4 ghz / AMD Radeon 6970M model to warrant spending the extra $400?

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a c 358 U Graphics card
October 13, 2013 6:47:42 PM

Which Core i7s are in the iMacs?

"Warrant" depends on how important editing / encoding time is to you. If the software you use can take advantage of the graphics card then even better. A 600MHz increase in clock speed is substantial when it comes to video editing / encoding because they are extremely CPU intensive.

I suspect the 2010 iMac has a 1st generation Core i7 while the 2011 iMac has a 2nd generation Core i7 CPU (Sandy Bridge). Sandy Bridge CPUs are roughly on average 12% more powerful than the 1st generation Core i3/i5/i7 CPUs. That means that the 3.4GHz Sandy Bridge Core i7 is equivalent to a 3.8GHz 1st generation Core i7 CPU. That is almost a 36% increase in raw performance.

If the graphics card can be taken advantage of, then the increase in performance is even higher. In short I would say, yes it is worth it. Especially since we are talking about a laptop which is pretty difficult to upgrade except RAM and the hard drive.
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October 13, 2013 7:40:13 PM

the 2011 would be best better everything you should get it.
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