Upgrading Ram on iMac to 32Gb -

iMac Retina 5K 27 inch 2020 model ; current memory 8Gb 2667 MHz DDR 4 ; Apple say each of the 4 memory slots accepts a 2667 MHz DDR 4 memory module; 2 memory slots are currently in use with 2 available. The processor is 3.8 GHz 8-core Intel Core i7.

Mac OS Sonoma 14.4.1

The current memory is not enough to cope with the kind of work I am doing on Adobe CC Illustrator 28.4.1 and will be doing on Photoshop

Is it possible to use 8 Gb memory module in all 4 memory modules and will the Intel Processor be able to cope effectively?