In the system requirements, Adobe says that a minimum of 1.6 ghz is required. So it should work ok, unless you are trying to work with 40+ megapixel photos, or hundreds of layers. The only scenarios I can think of that would get that extreme are astrophotograpy stacking, or merging panoramas. You might experiences some lag when doing this, but it should work, provided you have enough RAM. I would try for 8gb with that processor. I have a old version of Elements, and it runs quite well on a i3 (2core, 1.8ghz) processor, 4 gb of ram, and a integrated intel Gpu. The brushes may be a little less fluid without a dedicated graphics processor, but probably not as bad as Photoshop CC.