Depends on how often you upgrade. Five years from now, 8Gb should still be quite a bit, so your iMac should give you ~7 years of good use, if it doesn't die before that or get fried by lightning (a friend had that happen to his iBook)
If you buy a new machine every two years, it probably wouldn't matter, unless you do 3D modeling.
If you have a hundred things open in a VM with Windows in it, plus Photoshop and a 15 browser windows under OS X, then 8Gb may be faster, as it won't be doing any memory swapping
Comments
If you buy a new machine every two years, it probably wouldn't matter, unless you do 3D modeling.
If you have a hundred things open in a VM with Windows in it, plus Photoshop and a 15 browser windows under OS X, then 8Gb may be faster, as it won't be doing any memory swapping
Dan