My iMac vs Macbook air

Quick question:

Why does my Macbook Air perform better than my iMac, which has a slighter higher spec?

I mainly run Photoshop, InDesign and occasionally Premiere (Light editing) And there's an noticeable difference when the computers are performing tasks within these programmes.


Macbook Air:

  • MacBook Air (Retina, 13-inch, 2018)
  • 1.6 GHz Intel Core i5
  • 8 GB 2133 MHz LPDDR3
  • Intel UHD Graphics 617 1536 MB
  • Mojave 10.14.5


  • 2017 21.5inch
  • 2.3ghz Dual core intel
  • 8 GB 2133 MHz LPDDR3
  • Intel Iris Plus Graphics 640 1536 MB
  • Catalina 10.15

I apologise if it's something obvious, but I'm not a techy 🙂

Thanks in advance!

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