Why does Kernel_Task keep on throttling my Macs CPU?

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iMac Intel 27" EMC 2639

Model A1419 / Late 2013 / 3.2 & 3.4 GHz Core i5 or 3.5 GHz Core i7 Processor, ID iMac14,2

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Liam Boyle @liamboyle

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发帖于: 2018年8月26日

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Why does Kernel_Task keep on throttling my Macs CPU?

When using iMac (Late 2013 27" which has been fitted with an SSD) Kernel _Task throttles CPU. Instead of the CPU running at 3.2GHz, it will run no faster than 0.8GHz and fans run at 3000+rpm. Have checked all temperature sensors and all work fine. The mac is also not overheating. When running Apple hardware diagnostics, it tells me there may be a problem with the system management controller (SMC). Resetting the SMC temporarily fixes the kernel_task problem but it always returns. Any ideas what may be causing this issue?

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What is the SSD (make & model) and which port did you install it.

由 Dan 完成的 2018年8月26日

I installed Samsung 830 series 512gb ssd and it was installed in the sata port

由 Liam Boyle 完成的 2018年8月27日

Your SSD specs Samsung 830 series

由 Dan 完成的 2018年8月27日

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What is the SSD (make & model) and which port did you install it. — Dan
I installed Samsung 830 series 512gb ssd and it was installed in the sata port — Liam Boyle