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Compatibility between i7-8700 and i7-9700 or 9700K

This is a discussion on Compatibility between i7-8700 and i7-9700 or 9700K within the Motherboards, Bios & CPU forums, part of the Tech Support Forum category. On the 2019 iMac 21.5" 4k, there's the i7-8700 Intel CPU option. Since the socket on the motherboard is a


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Old 10-29-2019, 05:17 AM   #1
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On the 2019 iMac 21.5" 4k, there's the i7-8700 Intel CPU option. Since the socket on the motherboard is a LGA 1151, which according to the Intel site is compatible with both the i7-9700 or i7-9700K, does that mean I could upgrade the i7-8700 to the i7-9700 or even the i7-9700K?
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Old 11-01-2019, 09:18 PM   #2
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Yes, you could, but the cost per performance gain wouldn't make it worth it.
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Old 11-01-2019, 09:25 PM   #3
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Thanks of the reply. I learned in the meantime that the CPU power would be an issue with the K version when it comes to heat dissipation, i.e., 95W for the K instead of 65W for the non-K.

I have another question. If I select the lowest CPU on that iMac, which is an i3 3.6GHz 4 cores, could I later upgrade it to an i7-9700? Is the i3 socket compatible with an i7? In that case, the extra cost may be worth it.
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Old 11-01-2019, 09:44 PM   #4
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Theoretically you could. The issue as it stands is Apple products are by design, a closed system. Meaning they're not meant for the consumer (end user) to upgrade the system.



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