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A1418 / EMC 3069 / 2017 / Processeur quadricoeur i5 à 3,0 GHz, quadricoeur i5 à 3,4 GHz ou quadricoeur i7 de 3,6GHz. Sorti le 8 Juin 2017.

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SSD and potential RAM upgrade

I have a 2017 21.5” iMac running a 3 GHz processor with 16 GB 2400 MHz of RAM, 1 TB Fusion Drive and with the retina 4K display.

I use it for Lightroom and Photoshop photo editing (amateur photographer) and performing office based tasks as I teach design. (I use a Windows PC for Solidworks and other 3D software)

What I’m noticing is that the Mac will turn on very quickly (I guess thanks to the PCIe SSD) but when opening things like Skype / MS Office and teams / Adobe suite etc it is noticeably slower and can run into slower load times on some photo rendering.

I’m happy to upgrade the slower HDD from the Fusion Drive and split the Fusion Drive into a boot SSD and an app and data SSD following the guides on this website.

However, would it be worth upgrading the PCIe SSD whilst I’m at it and as I’m already at the logic board could / should I upgrade from the 16 GB to 32 GB RAM?

I’m also wondering if just simply replacing the HDD to an SSD and splitting them be providing me with the sufficient increase that I need and therefore reduce the cost of the upgrade and reduce the risk of breaking components etc.

I’m not a huge fan of throwing money and seeing little performance return.

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I my self am a photographer and use the same apps you are!

I would split the Fusion Drive for sure! I would focus on the PCIe/NMVe drive as the primary target of the upgrade as it will get you the most bang for the buck! I would go with one of the OWC Aura Pro X2 drives 480 GB or 1 TB OWC iMac blade SSD’s

With this config you will want the PCIe SSD as your boot drive and hosting your apps, leaving the rest of the drive empty! That way your SSD will be used for virtual RAM, caching and scratch space.

RAM is a bit tricky! If you are only working on smaller images then you really don’t need more. As an example I work on very large images for backgrounds 40 x 16 ft I use a 2013 MacPro with 64 GB of RAM I rarely need more than 42 GB. The best thing here is to monitor your RAM usage to gage what you are using to then decide if it makes sense.

Replacing the HDD with a SATA will offer some improvement but the limitations of the SATA III (6.0 Gb/s) makes it less beneficial for a boot drive. It’s a good drive to have for your photographs and other data which is why I would keep it.

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Thanks for this! I have bought both a HDD upgrade and a PCIe upgrade. Currently I run all my Lightroom library off my external slower hard drive so I could migrate my library to the Sata SSD and just use the external as a back up.

I'm currently teaching remotely so hopefully I can get this cracked next weekend and get back up and running for lessons 9am on Monday! :)

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D O'Malley sera éternellement reconnaissant.
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