I thought the RAM was the necessary component for Photoshop and Lightroom? Doesn't these programs run mostly through the memory? Or do they use the hard drive for that and the processor is more important?
No they don't use the hard drive for that. The hard drive is just for storage while the ram functions as a type of memory that the computer accesses so that apps can load and run more efficiently. More of it means more programs can be running simultaneously or can be accessed faster. Memory and storage are different when it comes to computers. The ram is important for running these programs because it will make it where your computer doesn't lag when opening them or loading stuff but you're not going to need 16gb of it. The apps aren't that intensive especially when just editing photos. You would need 16gb if you were running photoshop, watching videos, and doing other stuff all at the same time. My 8gb of ram is sufficient for running photoshop and lightroom. You could get 16gb but chances are you're not going to be doing anything to warrant that unless you start gaming or something. Each component is important in its own way.
Don't go cheap on anything but you won't need top of the line to be able to edit photos efficiently either. What I mean by that is computer components are updated so often that you don't need the current stuff. A few years old can be had for a lot cheaper but will perform flawlessly for what you want to do granted you do your research.
*edit* I just opened an image in photoshop and started editing varying things like saturations etc. and the efficiency bar that gauges the use of RAM by photoshop never went below 100% meaning it never once even came close to needing more RAM.
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