There are simply too many variations in the Mac 'lineup of products' to talk more specifically in an article like this, so consult your Apple Store or Apple Support regarding your present or future graphics requirements if you are using or considering a Mac purchase.
Apple has always been ahead of most 'Windows computer designers' and they have for some time provided 'graphics with on-board memory' in all but their lowest-end desktop machines, laptops are a different matter.
The principle holds true for the 'Mac App for QBO' itself. As such, you should experience enhanced QuickBooks Online operations with such a graphics card over running the App with only ‘on-board’ graphics and your computer’s standard memory. The ‘Windows App’ (for QBO) like a browser, can (will) make use of the dedicated memory and processing capabilities of your graphics card. Despite that, I will reaffirm my previous conclusions.
