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Hey, guys I wanna replace my HDD and install SSD for iMac 27 5k 2015 Late, but I don’t understand, do I need install a thermal sensor or not? Update 10/25/17 But I still do not understand why? If on so 27” 5k 2015 the hard drive does not have a cable for a temperature sensor
Yes, you’ll need a thermal sensor if you are swapping out your SATA HDD for a SATA SSD. Here is the part you’ll need: OWC In-line Digital Thermal Sensor for Hard Drive Upgrade for 27" iMacs 2012 and Later. You’ll also need an adapter frame: OWC 2.5" to 3.5" Drive Adapter Bracket. Here’s the IFIXIT guide you’ll need to follow: iMac Intel 27" Retina 5K Display Hard Drive Replacement You do have a second option here which you might want to look at. If you currently don’t have a PCIe NVMe blade SSD installed you could put one in which would give you still better performance! iMac Intel 27" Retina 5K Display SSD Replacement If you do have a Fusion Drive config you’ll need to break the fusion drive set before you remove the HDD. Also keep in mind the Fusion Drive blade SSD is quite small so you most likely will want to swap out to a larger drive.
I have fitted a 1TB WD blue ssd to my late 2015 imac 27”, it had no hard drive before, just the PCIe SSD. All I needed to source was the Sata/power cable. I did NOT fit any thermal sensor and it works perfectly, no fan spin or any other problems. I also replaced the PCIe SSD with a Samsung NVMe 1TB unit with an adapter, this also works perfectly. I conclude that at least on late 2015 model. NO thermal sensor is required. The system reads the drive temperatures fine so they must now use the Smart data. Its been working for 3 months now like this, don’t waste your hard earned money on un-neccesary stuff.
Hi! Just having the same question, so I bought the temperature sensor but made a test before sealing the iMac: On my Late-2015 iMac Retina 5K, 27”, with upgraded 16GB ram and a 1TB Crucial MX500 SSD without the OWC temperature sensor installed everything is working fine and the fan spin at standard 1200 rpm! Hope this can be helpful to someone Many thanks to iFixit for the opening guide!
I have same iMac, installed 1TB Sata ssd along with a 1 TB NVME with adapter, all working fine for last 2 years, no temp sensor fitted, fans work normally.
