Chosen Solution

I have a late 2009 MacMini that i wish to upgrade it to the fullest, or at least to make it as equivalent as possible to my mid2010 corei7 iMac, that is running HighSierra. Main goal is to be able to use the same apps (Adobe CC2017) in both Macs. So i am thinking of an SSD and perhaps more RAM, but i have no clue what type of Ram modules i need and most importantly if it is worth making the overall upgrade. Update (07/27/2021) I upgraded the memory with 2x4GB and when i boot, it will continuously starts beeping without being able to boot..

You can upgrade the RAM to 8 GB of RAM Type:PC3-8500 DDR3Min. RAM Speed:1066 MHz Drop in an SSD, make sure it is Serial ATA (3 Gb/s) compatible Upgrade the system to 10,11

Not sure you’ll end up with a system that will be that useful for your work flow, Adobe Creative Cloud offers quite a few different apps. I use Photoshop on a Mac Pro working on ultra-massive and deep images which pushes my system to the wall. While my work is at the extreme, consider what you are doing. First your system is only a Core 2 Duo either a 2.26, 2.53 or 2.66 GHz CPU, it only supports a max of 8 GB of RAM and the SATA port is limited to SATA II (3.0 Gb/s) be aware most SSD’s are now fixed speed at SATA III (6.0 Gb/s) I/O speed and won’t work in your system (review the drive spec sheet, if it doesn’t list support for 3.0 Gb/s look for another drive).