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Model A1419 / EMC 3070 / Mid 2017 / 3.4, 3.5 or 3.8 GHz Core i5 or 4.2 GHz Core i7 Kaby Lake Processor (ID iMac18,3) / Retina 5K Display. Benutze die Anleitungen des iMac Intel 27" Retina 5K Display (Ende 2014 & 2015), da das Gerät sehr ähnlich ist.

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Apple iMac 27-Inch "Core i5" 3.4 (5K, Mid-2017) GPU Upgrade

Is the Intel Core i7-7700K Desktop Processor 4 Cores up to 4.5 GHz Unlocked LGA 1151 the highest performing CPU for this yeas iMac? If not, what is the best performer? Thanks.

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You are limited to what offered for your series. Getting an unlocked chip won’t help you as you can’t alter the systems clock timings.

Remember this is not a hobbyist system to mod! This is a a best balance for someone that wants good performance and style with the least amount of dickering about.

von

First, thank you for your response. So, changing the CPU from an i5 to an i7 will not produce additional performance because on the clock speed limitations of the motherboard?

von

@lightfinder - That’s not what I said, here are your options from EveryMac lookup: iMac18,3 the CPU’s listed will work across anyone of these. The premise you inferred was over clocking which you can’t do in an iMac.

von

Thank you for the feedback.

von

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Gewählte Lösung

Your first upgrade should be to replace the standard hard drive with an SSD, this may give you all the speed increase you are looking for, here's how:

iMac 27" 2017 Festplatte tauschen

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Joe wird auf ewig dankbar sein.
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